Description of Problem:

Eudora for Windows 4.03 (and some other versions) doesn't handle PGP/MIME attachments properly.

It is much easier for users of these clients if the pgp cipertext is included in the email body instead of a PGP/MIME attachment - then they can use the pgp message plug-ins to decrypt easily.

Eudora + pgp claims to support PGP/MIME, but the reality is a little less ideal. PGP/MIME messages appear to contain two attachments called "Untitled", and the type of the message is not properly recognized. Clicking to decrypt attachments can produce a decrypted file in your attachments or temp folder!

There are more unhappy people here:
http://groups.google.com/groups?hl=en&threadm=38ac0640.23035063%40news.stofaNet.dk&rnum=1&prev=/groups%3Fq%3Deudora%2Bpgp%2Buntitled%26hl%3Den%26meta%3D

It is possible the problem only appears when you use IMAP:
http://groups.google.com/groups?hl=en&threadm=james-202DE8.00264510102000%40nntp.firstworld.net&rnum=6&prev=/groups%3Fq%3Deudora%2Bpgp%252Fmime%26meta%3Dsite%253Dgroups

Steps to reproduce the problem:
1. Install Eudora 4.03 + NAI pgp freeware (I used 7.03). I guess you'll need a windows pc for this step :(

2. Send a message from evolution to eudora.

3. Send a message from eudora to eudora with PGP/MIME disabled. This illustrates how easy decrypting the message is without using PGP/MIME.

Additional Information:

I wouldn't rate this as high priority, but it would be nice if an option to not use PGP/Mime was included in evolution. It should be pretty trivial to do and could make using pgp easier for some groups of people. The option may also solve problems with plugin integration / pgp support in other mailers.