talanis85 / mailsh Goto Github PK

Support sending and receiving PGP encrypted messages using the PGP/MIME protocol, as described in RFC 3156.

The biggest question here is how we want to connect gpg to the console workflow of mailsh. Encryption and decryption typically involves calling an external program ('gpg') and entering a keyring passphrase or similar. There's 2 possibilities I can think of right now:

1. Hard code the call to 'gpg' into mailsh and automatically encrypt/decrypt mails on 'mailsh read' and 'mailsh compose'. I don't like this because it's too opinionated on the user's PGP setup. Maybe someone uses a different encryption method that's still PGP compatible.
2. Don't add any encryption-related code. Encryption means piping an externally-generated PGP/MIME message into mailsh for sending. Decryption means piping the source of a message into gpg. However, we probably need more elaborate piping mechanisms for this.

Currently, the 'headers' command is taylored solely for human reading.

To faciliate the use in scripts, it would be nice if you could modify the format the printed headers.
For example, a script might want to traverse over all messages matching a filter expression. Then 'headers' should only print message numbers.

We would need a new option to 'headers', like this

mailsh headers -f "<format string>"

Where <format string> could be a printf-style string with placeholders for number, subject, date, from, to etc.