[stormbrew]

Thunderbird is basically the only email client that works the way I expect an email client to work, but it has some real warts that I wish they'd fix. They're not flashy UI things though, they're stuff around how it handles very large imap folders.

If you have hundreds of thousands of emails within reach of thunderbird it will by default download all of them. Try to index all of them. And it will devour your CPU and disk space and RAM to do it. Every time I set it up again for the first time it's a race to turn off the excessive indexing before it irreversably decides to chew up gigs of my disk and permanently be stuck using at least 2-3GB of RAM when loaded. And it's really hard to find all the indexing options.