- Made a comment on a commit.
- Fished the reply-to address out of `bin/mail list-oubound` + `bin/mail show-outbound` (it was now "COMMIT...").
- Sent mail to that address.
- Grabbed the raw message and wrote it to `mail.txt`.
- Ran `cat mail.txt | ./scripts/mail/mail_handler.php --process-duplicates`.
- Used `bin/mail list-inbound` + `bin/mail show-inbound` to verify receipt.
- Saw comment appear on audit.