I've been using Apple Mail for long time, and have a 2TB Time Capsule drive. 2 days ago Mail would not download from my Yahoo account. I could see the mail in the web portal, and then went to download the mail. I'd get a brief "downloading 9 of 9 messages", but nothing would download. I re-started the computer, etc. So, I opened up the prefs box, and deleted the yahoo account and re-established it, thinking that would re-connect the dots... But, ALL my email NOT on the server and NOT put into folders is AWOL, gone. 600 emails...... I tried Time Machine but how the heck do you recover email messages inside Apple Mail? Selecting recover the App iteslf does not work.