Automatically BCC self when composing email
I auto-bcc myself on emails to ensure it is delivered correctly. Thunderbird and Apple Mail support this option, but Airmail doesn't
This is an absolute MUST HAVE feature. Stop with all of the other 'cool' features until you have feature-parity with the built-in mail offerings from your competition. Please and thank you.
Also, unable to review BCC recipients we send to after the message has been sent.