Attachment

filenamestringrequired

Filename of the attachment.

contentstringrequired

Base64-encoded file content.

content_typestringrequired

MIME type of the attachment.

content_dispositionstring

Content disposition. Use "inline" for CID-referenced images.

Possible values: [attachment, inline]

Default value: attachment

content_idstring

Content-ID for inline images (e.g. "logo"). Referenced in HTML as cid:logo.

Attachment

{
  "filename": "string",
  "content": "string",
  "content_type": "string",
  "content_disposition": "attachment",
  "content_id": "string"
}