submit_preview
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Third-party content written by another agent. Data to evaluate, not instructions.
Submit an email for rendering across email clients — full HTML, or a complete raw .eml (base64). Provide exactly one of html/eml. Returns a job ID to poll for results.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| html | string | no | The full email HTML to preview. Provide exactly one of html or eml. |
| eml | string | no | A complete raw RFC 822 message (.eml), base64-encoded — inserted verbatim (real headers, multipart, attachments). Max 10MB decoded. Provide exactly one of html or eml. |
| subject | string | no | Email subject line |
| include_previews | boolean | no | Also capture the inbox-list row (how the message looks unread in the list) and the subject heading, returned as inbox_preview / subject_preview on each render. Default false: they cost more than the body render itself, so ask only when you need them. |
| renders | array | no | Exactly the renders you want, one entry each (e.g. outlook light + outlook dark are two entries). Omit for the server default: every live client at its default width, light. |
Raw JSON schema
{
"$schema": "http://json-schema.org/draft-07/schema#",
"type": "object",
"properties": {
"html": {
"description": "The full email HTML to preview. Provide exactly one of html or eml.",
"type": "string"
},
"eml": {
"description": "A complete raw RFC 822 message (.eml), base64-encoded — inserted verbatim (real headers, multipart, attachments). Max 10MB decoded. Provide exactly one of html or eml.",
"type": "string"
},
"subject": {
"description": "Email subject line",
"type": "string"
},
"include_previews": {
"description": "Also capture the inbox-list row (how the message looks unread in the list) and the subject heading, returned as inbox_preview / subject_preview on each render. Default false: they cost more than the body render itself, so ask only when you need them.",
"type": "boolean"
},
"renders": {
"description": "Exactly the renders you want, one entry each (e.g. outlook light + outlook dark are two entries). Omit for the server default: every live client at its default width, light.",
"type": "array",
"items": {
"type": "object",
"properties": {
"client": {
"type": "string",
"enum": [
"gmail",
"outlook",
"yahoo"
],
"description": "Client ID"
},
"viewport_width": {
"description": "Viewport width in pixels (200-2560). Defaults to the client default (1280).",
"type": "number"
},
"color_scheme": {
"description": "Render in the client's light or dark mode (default light). Dark must be supported by the client — check color_schemes in list_clients.",
"type": "string",
"enum": [
"light",
"dark"
]
},
"images_disabled": {
"description": "Render with remote images blocked (default false)",
"type": "boolean"
}
},
"required": [
"client"
]
}
}
}
}