`email_sender_mail_from_invalid`

HTTP 400invalid_request

mail_from_domain must be a subdomain of the sending domain that nobody sends or receives mail at.

Handling it

Fix the request and send it again. message says what is wrong, and param names the parameter where there is one. Keep the request_id: it lets Parasend find the request.

The error, as the API returns it

{
  "error": {
    "type": "invalid_request",
    "code": "email_sender_mail_from_invalid",
    "message": "`mail_from_domain` must be a subdomain of the sending domain that nobody sends or receives mail at.",
    "param": null,
    "request_id": "req_5e69684dc3de68bf8651a712"
  }
}