GPG key-searching problems

[urdh]

When searching for a key to sign messages with, the GPG plugin automatically lowercases the entire email regardless of case used in the account settings. This means that using a case-sensitive email (they are case-sensitive in general) with a correct corresponding PGP key, Airmail might still not find the key because it in effect performs a case-insensitive search.

As far as I can tell, the problem lies in AMPAddress storing the email address as lower-case regardless of case used in the account settings.

It seems that the S/MIME plugin suffers from the same problem.