Support PGP decryption for multipart emails
Currently, Afterlogic Webmail only decrypts PGP messages when the email is of type text/plain.
However, some users paste PGP-encrypted messages from external sources (e.g. Mailvelope or GPG CLI output). These messages are sometimes sent as multipart/alternative emails.
Afterlogic does not attempt to decrypt them — even though the text/plain part contains a valid and properly formatted PGP block.
This is a problem because many email clients generate multipart/alternative messages by default, even when the PGP content is plain text.
Feature request:
Please improve PGP handling so that Afterlogic also detects and decrypts PGP blocks found in the text/plain part of multipart/alternative messages.
