I finally gave up on keeping Eudora working a few years ago, but I still haven't found anything nearly as good. I think the 2 best features were: -Performance.

I finally gave up on keeping Eudora working a few years ago, but I still haven't found anything nearly as good. I think the 2 best features were: -Performance. It was fast as hell even on old equipment, downright instantaneous on modern hardware. Everything was fast, sorting vast amounts of email, searching, you name it. -Alt-click to bring related emails together. Meet to see all emails from one particular person? Alt-click on their name/address in the email list. Want to instead see all emails with a certain subject? Alt-click on the subject. Faster and less error prone than typing. Yeah, Gmail's threading is OK most of the time but try managing a thread where you email a group and get a mix of direct responses and reply-all responses. I inevitably end up missing an important response every time, and it's a real pain in the ass to go back and find one particular response.