Render a design or HTMLMenu

Render a design or HTML

POST/v1/templates/render

Requires an API key with the templates:read scope. About keys and scopes

Works with integration, agent and partner keys. Also available to embed sessions.

Reads only: safe to retry. About idempotency

Renders a block tree and theme sent in the request, or an email written as HTML ("kind": "html"), to the HTML and plain text a recipient would get, without saving anything: the builder or code editor preview, plain-text view and HTML export. HTML is returned as saving would keep it, with HTML_REMOVED listing what saving removes, UNSUBSCRIBE_LINK_ADDED when no link goes to {{unsubscribe_url}}, UNUSABLE_ADDRESS naming empty, # or relative link and image addresses, and PLACEHOLDER_LINK naming placeholder addresses (example.com and the like), which sending refuses as it does in a design. With "context": "marketing" the HTML shows the postal address and unsubscribe link a marketing send adds when the email lacks them; "transactional", the default, adds nothing and returns the HTML as saving keeps it. To render a saved template, use POST /v1/templates/{id}/render. Merge tags show their defaults, or pass contact to render them as that contact would see them (not from an embed session). warnings flags problems that do not stop rendering, such as an oversized message, or POSTAL_ADDRESS_MISSING while the workspace has no postalAddress for the footer.

Header parameters

Kirora-Workspacestringoptional

Partner keys only: the child workspace to act in, by the external id the partner gave it. Without it, a partner key acts in its own workspace. Any other key that sends it is refused with 403, and an unknown workspace is 404.

pattern ^[A-Za-z0-9._:-]{1,128}$

Request body

One of 2 shapes:

RenderDesignContentInput
9 child attributes
kind"design"optional

design: built from blocks in the designer. Left out, design.

schemaVersionintegeroptional

The block format version.

min > 0 · max 1000

blocksobject[]required

The blocks, rendered top to bottom: at most 200 across the whole tree and five levels including the root. The footer stays at the root.

at least 1 item · at most 200 items

One of 23 shapes
HeaderBlockInput
11 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"header"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

srcstringoptional

The logo image's URL; without one, the brand kit's logo.

up to 2,048 characters

altstringoptional

The logo's alt text. Without src or a brand kit logo, it shows as a wordmark in the heading font; gallery samples set it to {{ org.name }}.

up to 100,000 characters

widthstringoptional

A share of the row ("100%", "66%", "50%"), or a fixed width from "16px" to "600px", such as "120px" for a logo. Never wider than the row.

alignstringoptional

When unset, headings, text, buttons and boxed text start from the reading side (left, or right in a right-to-left language); other blocks centre.

one of left, center, right

hrefstringoptional

Where it links: an https:, http:, mailto: or tel: address, or a merge tag. https:// is added to a bare address such as acme.com/setup. A draft may hold anything; a button or video whose link is none of these cannot be published or sent.

up to 2,048 characters

HeadingBlockInput
10 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"heading"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

textstringoptional

up to 100,000 characters

sizestringoptional

one of 28px, 22px, 18px

alignstringoptional

When unset, headings, text, buttons and boxed text start from the reading side (left, or right in a right-to-left language); other blocks centre.

one of left, center, right

weightstringoptional

one of regular, bold

TextBlockInput
8 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"text"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

textstringoptional

up to 100,000 characters

alignstringoptional

When unset, headings, text, buttons and boxed text start from the reading side (left, or right in a right-to-left language); other blocks centre.

one of left, center, right

ImageBlockInput
11 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"image"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

srcstringoptional

up to 2,048 characters

altstringoptional

up to 100,000 characters

widthstringoptional

A share of the row ("100%", "66%", "50%"), or a fixed width from "16px" to "600px", such as "120px" for a logo. Never wider than the row.

alignstringoptional

When unset, headings, text, buttons and boxed text start from the reading side (left, or right in a right-to-left language); other blocks centre.

one of left, center, right

hrefstringoptional

Where it links: an https:, http:, mailto: or tel: address, or a merge tag. https:// is added to a bare address such as acme.com/setup. A draft may hold anything; a button or video whose link is none of these cannot be published or sent.

up to 2,048 characters

ButtonBlockInput
12 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"button"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

textstringoptional

up to 100,000 characters

hrefstringoptional

Where it links: an https:, http:, mailto: or tel: address, or a merge tag. https:// is added to a bare address such as acme.com/setup. A draft may hold anything; a button or video whose link is none of these cannot be published or sent.

up to 2,048 characters

alignstringoptional

When unset, headings, text, buttons and boxed text start from the reading side (left, or right in a right-to-left language); other blocks centre.

one of left, center, right

fullWidthbooleanoptional
colorstringoptional

A hex colour, or a theme reference: accent, canvas, or accent-tint / canvas-tint (a light tint of it), which follows the theme.

buttonStylestringoptional

This button's style, in place of the theme's.

one of solid, outline

DividerBlockInput
11 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"divider"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

thicknessintegeroptional

Line weight in px.

min 1 · max 10

colorstringoptional

A hex colour, or a theme reference: accent, canvas, or accent-tint / canvas-tint (a light tint of it), which follows the theme.

lineStylestringoptional

one of solid, dashed, dotted

widthstringoptional

How much of the row the line spans.

one of 100%, 75%, 50%, 25%

alignstringoptional

When unset, headings, text, buttons and boxed text start from the reading side (left, or right in a right-to-left language); other blocks centre.

one of left, center, right

SpacerBlockInput
7 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"spacer"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

sizestringoptional

The height, from "4px" to "200px".

pattern ^\d{1,3}px$

ColumnsBlockInput
10 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"columns"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

widthsinteger[]optional

Each column's share of the row in percent, left to right, one per column and adding up to 100, such as [33, 67]. Omit for equal columns.

at least 2 items · at most 2 items

valignstringoptional

Where shorter columns sit against the tallest one.

one of top, middle, bottom

stackOnMobilebooleanoptional

False keeps the columns side by side on phones too, such as a two-across product grid; by default they stack.

columnsobject[][]required

The child blocks of each column, left to right: exactly 2 arrays.

at least 2 items · at most 2 items

Columns3BlockInput
10 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"columns3"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

widthsinteger[]optional

Each column's share of the row in percent, left to right, one per column and adding up to 100, such as [33, 67]. Omit for equal columns.

at least 3 items · at most 3 items

valignstringoptional

Where shorter columns sit against the tallest one.

one of top, middle, bottom

stackOnMobilebooleanoptional

False keeps the columns side by side on phones too, such as a two-across product grid; by default they stack.

columnsobject[][]required

The child blocks of each column, left to right: exactly 3 arrays.

at least 3 items · at most 3 items

ImageTextBlockInput
10 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"imagetext"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

srcstringoptional

up to 2,048 characters

altstringoptional

up to 100,000 characters

textstringoptional

up to 100,000 characters

sidestringoptional

Which side the image sits on; unset, the start of the reading direction (left, or right in a right-to-left language).

one of left, right

ImageGroupBlockInput
8 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"imagegroup"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

count2 | 3optional
imagesobject[]optional

at most 3 items

2 child attributes
srcstringoptional

up to 2,048 characters

altstringoptional

up to 100,000 characters

BoxedBlockInput
8 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"boxed"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

textstringoptional

up to 100,000 characters

alignstringoptional

When unset, headings, text, buttons and boxed text start from the reading side (left, or right in a right-to-left language); other blocks centre.

one of left, center, right

QuoteBlockInput
8 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"quote"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

textstringoptional

up to 100,000 characters

text2stringoptional

up to 100,000 characters

ListBlockInput
7 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"list"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

textstringoptional

up to 100,000 characters

ProductBlockInput
13 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"product"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

weightstringoptional

The name and price in bold (the default) or regular weight.

one of regular, bold

textstringoptional

up to 100,000 characters

text2stringoptional

up to 100,000 characters

descstringoptional

up to 100,000 characters

hrefstringoptional

Where it links: an https:, http:, mailto: or tel: address, or a merge tag. https:// is added to a bare address such as acme.com/setup. A draft may hold anything; a button or video whose link is none of these cannot be published or sent.

up to 2,048 characters

srcstringoptional

up to 2,048 characters

altstringoptional

up to 100,000 characters

VideoBlockInput
10 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"video"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

srcstringoptional

up to 2,048 characters

altstringoptional

up to 100,000 characters

textstringoptional

up to 100,000 characters

hrefstringoptional

Where it links: an https:, http:, mailto: or tel: address, or a merge tag. https:// is added to a bare address such as acme.com/setup. A draft may hold anything; a button or video whose link is none of these cannot be published or sent.

up to 2,048 characters

SocialBlockInput
10 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"social"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

alignstringoptional

When unset, headings, text, buttons and boxed text start from the reading side (left, or right in a right-to-left language); other blocks centre.

one of left, center, right

linksobject[]optional

The profiles to show; without any, the brand kit's social links.

at most 10 items

2 child attributes
labelstringrequired

1–80 characters

hrefstringrequired

uri · pattern ^[^\s{}]*$ · up to 2,048 characters

displaystringoptional

Each link as its network's icon (the default), the icon and its label, or the label alone. The network is read from the link's address; any other address shows a globe.

one of icons, both, text

iconStylestringoptional

Icons in each network's colour (the default), near-black, or white for a dark background.

one of color, dark, light

MenuBlockInput
9 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"menu"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

linksobject[]optional

The entries, left to right: at most 8 { label, href }.

at most 8 items

2 child attributes
labelstringrequired

1–80 characters

hrefstringrequired

uri · pattern ^[^\s{}]*$ · up to 2,048 characters

alignstringoptional

When unset, headings, text, buttons and boxed text start from the reading side (left, or right in a right-to-left language); other blocks centre.

one of left, center, right

separatorstringoptional

What stands between entries: space only, a bar or a dot.

one of none, bar, dot

HtmlBlockInput
7 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"html"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

textstringoptional

up to 100,000 characters

SectionBlockInput
8 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"section"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

backgroundImagestringoptional

A photo behind the section's blocks, covering the box. Needs style.backgroundColor, which Outlook for Windows and clients with images off show instead, and which text is made readable on.

pattern ^https:\/\/[^\s"'()<>\\{}]+$ · up to 2,048 characters

blocksobject[]required

The section's child blocks, drawn inside its box.

at least 1 item · at most 200 items

FooterBlockInput
8 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"footer"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

textstringoptional

up to 100,000 characters

lockedtrueoptional
alignstringoptional

When unset, headings, text, buttons and boxed text start from the reading side (left, or right in a right-to-left language); other blocks centre.

one of left, center, right

unsubscribeLinkbooleanoptional

False leaves out the unsubscribe link, for a transactional email (a receipt, a sign-in code). A marketing send adds the sender's own link anyway.

unsubscribeLabelstringoptional

The words of the unsubscribe link, "Unsubscribe" by default. The link opens a page that also manages topic preferences, so "Unsubscribe or manage preferences" is accurate.

up to 80 characters

RepeatBlockInput
9 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"repeat"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfobjectoptional

Show the block only to contacts these segment rules match, checked as each message is rendered. Omit to show it to everyone.

Any of 2 shapes
Match all
Match any
visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

liststringrequired

The list to repeat over: event.properties.<name> (a journey's event, or a transactional send's data) or contact.attributes.<name>.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

limitintegeroptional

min 1 · max 100

blocksobject[]required

The blocks written out once per item of list, where {{ item.<field> }} reads that item. Repeats do not nest.

at least 1 item · at most 200 items

SharedBlockReferenceInput
7 child attributes
idstringrequired

Identifies the block within the template; unique among its blocks.

1–128 characters

type"shared"required
styleEmailBlockStyleInputoptional

Visual overrides for this block, such as colours, font and spacing.

19 child attributes
backgroundColorstringoptional

Fill behind the block.

fontFamilystringoptional

A font id: one every client has (arial, verdana, georgia, tahoma, times-new-roman, courier-new), or a web font, which shows where the client loads it and falls back to a safe font elsewhere. Form themes use the same ids.

one of arial, verdana, georgia, tahoma, times-new-roman, courier-new, inter, roboto, open-sans, lato, montserrat, poppins, dm-sans, nunito, work-sans, oswald, ubuntu, mulish, manrope, quicksand, rubik, josefin-sans, epilogue, noto-sans, space-grotesk, plus-jakarta-sans, outfit, bricolage-grotesque, sora, ibm-plex-sans, geist, space-mono, playfair-display, merriweather, lora, libre-baskerville, eb-garamond, fraunces, source-serif-4, cormorant-garamond

fontSizeintegeroptional

Text size in px, 12 to 72.

min 12 · max 72

mobileFontSizeintegeroptional

Text size in px on phones (screens up to 620px), 12 to 72. Email apps that ignore mobile styles use fontSize.

min 12 · max 72

paddingobjectoptional

Space inside the block in px, 0 to 100 per side; omitted sides keep their default.

mobilePaddingobjectoptional

Space inside the block in px on phones (screens up to 620px), 0 to 100 per side; omitted sides keep the block's padding (or its default). Email apps that ignore mobile styles use padding.

borderWidthintegeroptional

Border thickness in px; 0 for none.

min 0 · max 10

borderStylestringoptional

Border line style.

one of solid, dashed, dotted

borderColorstringoptional

Border colour.

borderRadiusintegeroptional

Corner rounding in px, 0 to 100.

min 0 · max 100

textColorstringoptional

Text colour.

linkColorstringoptional

Colour of links in the text.

linkUnderlinebooleanoptional

Set to false for links without an underline, such as a row of rating numbers or stars.

letterSpacingnumberoptional

Space between letters in px, such as 3 for a spaced-out eyebrow line.

min -2 · max 20

textTransformstringoptional

Set to uppercase to capitalise all text.

one of none, uppercase

lineHeightnumberoptional

A multiple of the font size.

min 1 · max 3

fontWeightstringoptional

Text weight.

one of regular, bold

fontStylestringoptional

Text style.

one of normal, italic

insetbooleanoptional

Draw the background and border as a box within the content width, not across the whole row.

visibleIfPresentstringoptional

Show the block only when this value is present (not missing, empty or false), such as data.vat for a VAT row; checked as each message is rendered.

pattern ^(?:contact\.attributes\.[\p{L}\p{N}\p{M}_.-]{1,64}|(?:event\.properties|data)\.[A-Za-z0-9_.-]+)$

showOnstringoptional

Show the block only on phones (screens up to 620px) or only on wider screens. Clients that ignore screen size show the desktop version, and so does plain text. Omit to show it everywhere.

one of mobile, desktop

sharedBlockIdstringrequired

The workspace's shared block placed here, by reference.

uuid

overrideobject[]optional

Edited here only: these blocks render instead of the shared content. Omit to follow the shared block.

at least 1 item · at most 200 items

themeEmailThemeInputoptional

Theme values this email overrides. Defaults to {}, which keeps the workspace brand kit.

14 child attributes
bodyFontFamilystringoptional

Body font stack, such as Inter, sans-serif.

pattern ^[\w\s,'"-]+$ · up to 200 characters

headingFontFamilystringoptional

Heading font stack.

pattern ^[\w\s,'"-]+$ · up to 200 characters

cardBackgroundColorstringoptional

Background of the email card, as hex.

pattern ^#(?:[0-9a-f]{3}|[0-9a-f]{6})$

canvasBackgroundColorstringoptional

Background behind the card, as hex.

pattern ^#(?:[0-9a-f]{3}|[0-9a-f]{6})$

textColorstringoptional

Default text colour, as hex.

pattern ^#(?:[0-9a-f]{3}|[0-9a-f]{6})$

accentColorstringoptional

Brand colour for buttons and highlights, as hex.

pattern ^#(?:[0-9a-f]{3}|[0-9a-f]{6})$

linkColorstringoptional

Link colour, as hex.

pattern ^#(?:[0-9a-f]{3}|[0-9a-f]{6})$

headingColorstringoptional

Heading colour, as hex; unset, headings take textColor.

pattern ^#(?:[0-9a-f]{3}|[0-9a-f]{6})$

buttonTextColorstringoptional

Label colour of solid buttons in accentColor, as hex; unset, white or near-black, whichever reads on it.

pattern ^#(?:[0-9a-f]{3}|[0-9a-f]{6})$

baseFontSizestringoptional

Body text size; headings and buttons scale with it. Unset is 16px.

one of 14px, 15px, 16px, 17px, 18px

cardWidthstringoptional

Width of the email card on wide screens.

one of 560px, 600px, 680px

cardBorderRadiusstringoptional

Corner rounding of the email's card.

one of 0px, 6px, 12px, 16px, 24px, 999px

buttonBorderRadiusstringoptional

Button corners; cardBorderRadius rounds the email's card and, when this is unset, buttons.

one of 0px, 6px, 12px, 16px, 24px, 999px

buttonStylestringoptional

Button style.

one of solid, outline

languagestringoptional

The language the email is written in, as a BCP 47 tag ("en", "fr-BE", "ar"). It sets the HTML lang and the reading direction: Arabic, Hebrew, Persian, Urdu and other right-to-left languages render right to left. Defaults to "en".

up to 35 characters

plainTextOverridestring | nulloptional

Plain text used instead of the version generated from the design or HTML.

up to 100,000 characters

contactobjectoptional

A contact whose values fill the merge tags and decide each block's visibleIf. Without one, merge tags show their defaults.

Any of 3 shapes
By contact id
1 child attribute
contactIdstringrequired

Kirora's id for the contact.

uuid

By external id
1 child attribute
externalIdstringrequired

Your own id for the contact, as set with identify.

1–255 characters

By email
1 child attribute
emailstringrequired

The contact's email address, matched trimmed and without case.

subjectstringoptional

The subject line, returned rendered.

1–998 characters

datamap<string, any>optional

Sample data for {{ event.properties.* }} tags and repeat lists: what a transactional send's data or a journey's event would carry. Without it, a repeat shows once with its item tags as written.

keys: pattern ^[A-Za-z0-9_-]{1,64}$

RenderHtmlContentInput
7 child attributes
kind"html"required

html: the whole email written as HTML, kept as code.

htmlstringrequired

The whole email as HTML. Merge tags work as in a design; {{unsubscribe_url}} as a link's href places the unsubscribe link, which marketing sends otherwise get below the email, with the workspace postal address when the email does not show it.

up to 512,000 characters

contextstringoptional

HTML only. marketing: the email as a marketing send has it, with the postal address and an unsubscribe link ({{unsubscribe_url}}; # in a test send) added below when the HTML does not show them. transactional (the default): nothing is added, as a transactional send adds nothing, and the HTML is as saving keeps it.

one of marketing, transactional · default "transactional"

plainTextOverridestring | nulloptional

Plain text used instead of the version generated from the design or HTML.

up to 100,000 characters

contactobjectoptional

A contact whose values fill the merge tags and decide each block's visibleIf. Without one, merge tags show their defaults.

Any of 3 shapes
By contact id
1 child attribute
contactIdstringrequired

Kirora's id for the contact.

uuid

By external id
1 child attribute
externalIdstringrequired

Your own id for the contact, as set with identify.

1–255 characters

By email
1 child attribute
emailstringrequired

The contact's email address, matched trimmed and without case.

subjectstringoptional

The subject line, returned rendered.

1–998 characters

datamap<string, any>optional

Sample data for {{ event.properties.* }} tags and repeat lists: what a transactional send's data or a journey's event would carry. Without it, a repeat shows once with its item tags as written.

keys: pattern ^[A-Za-z0-9_-]{1,64}$

Returns

Returns 200 OK with a TemplateRender in data. It can also return 409 Conflict, 413 Payload Too Large or 415 Unsupported Media Type; see the statuses below. Otherwise returns an error; Errors lists every code and which to retry.

  • 200 OKThe rendered HTML, plain text, size and warnings.
  • 409 ConflictThe request conflicts with current state — a duplicate unique value, or a resource whose status does not allow this operation.
  • 413 Payload Too LargeThe body is larger than this operation accepts (PAYLOAD_TOO_LARGE).
  • 415 Unsupported Media TypeThe body is not JSON, or not the upload the operation takes (UNSUPPORTED_MEDIA_TYPE).
htmlstringrequired

The rendered HTML.

textstringrequired

The rendered plain-text version.

subjectstringoptional

The subject with merge tags filled in.

sizeBytesintegerrequired

Size of the HTML in bytes.

min 0

warningsobject[]required

Problems that do not stop rendering, such as a size that risks clipping.

3 child attributes
codestringrequired

A stable code for the kind of problem.

titlestringrequired

A short summary.

detailstringrequired

What is wrong and how to fix it.