I don't know if it's been brought up before, let me know if it has, but here's the deal.
The first time I download email from Evolution everything's fine. But if I try to download again, and there IS new mail waiting for me, the system crashes and I go back to Mint's login screen. When I log back in, the offending email is there, safely downloaded.
So I said "Down with Evolution!" and went back to Thunderbird. And guess what? The exact same thing happens. Crash.
The weird thing is that when, after logging in, I can send and receive mails with absolutely no problem, ONCE. It's when I try it again, and, I repeat, when there's NEW mail to download. If there's no new messages nothing happens.
If you need more info on this, please let me know, and tell me how to find it. Some log somewhere? I'm a newbie, after all.