I have Mountain Lion on an 27" iMac, and recently, for some reason, the Mail app launches every 10 minutes or so, and I have to quit it every time.
In the Preferences of Mail, I already tried every possible way to tell it not to start itself, but every 10 minutes or so, it still launches and I have to quit it manually. I don't know whether it is because I set in Gmail calendar to send email alert on some special events in my Google Calendar, but that should be handled by the Gmail server, not the Mail app...
I don't know whether it is related to the Notification Center, as the last few times, I notices messages popping up at the top right corner of the screen, and the Mail just started to run all by itself as well.
Is there a way to stop it from running automatically?