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POST
An alternative to Send Campaign for when you already have a flat list of recipient IDs rather than contact list or segment IDs. Recipient IDs must follow the format customer_<email> or form_customer_<email>. IDs with a member_ prefix are not supported by this endpoint — use recipient_list_ids in the standard send endpoint instead.

Headers

string
required
Bearer YOUR_API_KEY
string
Your project UUID. Not required if the API key already encodes the project.

Request Body

string
required
Campaign display name
string
required
Email subject line
string
required
HTML email body
string[]
required
Array of recipient IDs. Supported formats:
  • customer_alice@example.com
  • form_customer_alice@example.com
string
ISO 8601 datetime to schedule delivery. Omit to send immediately.
object[]
Optional file attachments — same shape as Send Campaign

Response

Same shape as Send Campaign.