FEAT: support local mailboxes in maildir format

[jdlawrie]

Is your feature request related to a problem?

No response

Describe the solution you'd like

Would it be possible to support local mailboxes? mutt supports this with mutt -f Maildir

Describe alternatives you've considered

No response

Additional context

No response

[LeaWhoCodes]

Hello, @jdlawrie, what do you mean by local mailboxes?

We do support insecure connection, and Proton Bridge works with no problem (#219).

If you could specifically say what you are missing, that would be great!

[jdlawrie]

Hi @LeaWhoCodes I mean opening mailboxes from the local filesystem, not over IMAP.
This is useful on the mailserver itself, or after running imapsync or similar.

For example in mutt I can do mutt -f ~/Maildir and it will load without any credentials, connection string or protocol.