I used to use entourage, and like it a lot for it's extra features like contact organization and scheduling. It was really nice until it started acting so buggy and taking up so much resources. I then moved to Apple Mail, and for the most part was satisfied. It was very fast, easy to use, quick to respond, etc. I did hit a few bugs now and then with emails sending from the wrong accounts but that wasn't too much of an issue until I recently upgraded to 4.2 in OSX 10.6. With this new version, it's so horrible. It lists my accounts unnecessarily when all I want is the inboxes. I accidentally sent an email with a 100mb attachment and now it's freaking out. I canceled the email and now it's creating emails in the "recovered messages" folder! It spikes my processor which freezes my computer for like 2 seconds, and it takes up 1gb of ram. Now that it's constantly trying to recover this 100mb email, i can't even get new email anymore. I had to go to the gmail website to get my new mail and when looking there, I found them in the trash. Also, this new mail creates drafts so often and saves each autosave as a new draft which clogs everything up. I'm really annoyed by Mail 4.2 and am now looking for a new mail client. What client do you guys use?