Delete outbound SMTP email

Email deletion will set the status to "rejected" (and subsequently not process it in the queue) if and only if the current status is one of "pending", "queued", or "deferred". This is useful for canceling emails scheduled via a future date before they are sent. We may purge emails automatically after 30 days after they were created and/or sent – therefore you should keep a copy of outbound SMTP emails in your client, database, or application.

Authentication: This endpoint supports both API token authentication and alias credentials authentication.