Since a few years I can't quit Mail.app instantly. The more folders I have entered during the usage, the more folder Mail.app tries to close before it quits. Each close operation takes 3-8 sec to ...
As of January 2015, I have a brand new Macbook Air running all fully updated Yosemite 10.10. I have been simply trying to configure the mac OS mail app to work with a simple, normal Yahoo Mail ...