Lists your messages (emails) that are drafts, scheduled, sent, or failed to send, newest first by created. Deleted messages are left out.

Mixmax removes the body of a message once it is sent, so sent messages have an empty or missing body.

A message's state follows from its fields: scheduled means it is waiting to send, sent means it was sent, sendingError without sent means sending failed, and none of these means it is a draft.