I used to use VM and really liked it (even submitted some patches back in the day).
I had to switch to Thunderbird because I am a heavy IMAP user. I use IMAP so that I can read my email, including old filed emails, on multiple devices. I moved to Thunderbird when VM's IMAP interface was very limited. I'd like to come back to VM, but have felt like I could not because AFAICT it doesn't support my current mode of operation, which involves simultaneously keeping open two IMAP inboxes for two different accounts. When I tried to use VM again, it seemed like I couldn't effectively keep two IMAP servers open simultaneously, so I gave up. Was I wrong about that, or is it feasible? I'd love to come back to the fold, if possible. By the way, for readers trying alternatives, I should mention that I experimented with mutt, but gave up on that, as well. Moving between folders and servers in mutt is *EXTREMELY* clunky. Also, interacting with large numbers of folders seemed very bad: (1) it involved a lot of hacking of configuration files (2) the interactions to switch folders were very clunky and (3) mutt didn't seem to be able to handle displaying a large number of folders and letting you jump to them interactively.
