I connect to a company mail server that sometimes is very slow to respond or often down. If I decide not to wait (say 20 seconds or so after clicking get mail) and try to close / stop the receive message box that appears on screen, the program terminates. Unfortunately I can't repeat the error at the moment as the mail server is up right now otherwise I would document this better, my apologies. I was able to repeat this every time I tried to connect to the mail server when it was down. A graceful disconnect from the mail server would be preferred? Using 3.14.1-2newcairo release
Please try if the crash also happens with the official, 32-bit release. Also, can you simulate the server being down by configuring your account to use a different (dead) port, or hostname?