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POST
Dispatch an email message from one of your provisioned inboxes. The outbound message is automatically signed with your organization’s DKIM keys and wrapped in loop-suppression headers to prevent infinite mail loops.

Headers

string
required
Bearer token formatted as Bearer gk_live_... or scoped inbox key Bearer gk_box_....
string
Optional unique UUID string (max 255 chars) to prevent double sending on network retry.

Body

string
required
The unique ID of the inbox sending the email (e.g. inbox_8f29ac01...).
string[]
required
Array of recipient email addresses. Max 50 recipients per request.
string
default:"(no subject)"
The subject line of the email. Max 500 characters.
string
Plain text body of the email.
string
Rich HTML body. Automatically sanitized before dispatch.
string[]
Array of CC recipient email addresses.
string[]
Array of BCC recipient email addresses.
string
Optional message or thread ID to preserve email threading and headers (In-Reply-To, References).

Response

object