Well, I am curious. Seems so hard to get an email client right. I would not mind paying (GPG integration is a must).

If you don't go the mutt/alpine route, there aren't much options. Basically Thunderbird and Evolution. Never really got Clawsemail and iscribe to work with my IMAP server settings.

To make things worse, people do understand email less and less. Often, all ports except 80 and 443 are blocked and you can't even use IMAP/SMTP. And if you complain they tell you "What are you talking about? Gmail works...."