- Attachments that don't have a filter can't be visualized. For this case would be interesting to open with 'xdg-open' when hit <Enter>, and/or '.mailcap' support.
- Account password is stored in plaintext
- Occasional rendering artifacts when switching tabs/folders
If those above are fixed plus theming, unread, etc. I can easily see myself using it as my daily driver.
You can use :save or :pipe on these, but yeah - xdg-open would also be cool. Mailcap support would also be great.
>Account password is stored in plaintext
In a chmod 600 file, though. There's also an option for configuring a command to run to retrieve your password by e.g. decrypting it with gpg: see aerc-imap(5), or :help imap, for details.
Seems like a good patch to implement a command that saves to a temporary file and opens with provided program, will certainly follow development, great work!