Today I’ve faced a problem. After quite a long time not using Apple’s desktop Mail app, I’ve found messages were not showing. I could see there were unread emails, but the app didn’t show them to me.

I found the solution to that problem on Apple’s forum. Long story short if you ever have this problem:

  1. Shut Mail down
  2. Copy the file \~/Library/Preferences/ (or \~/Library/Preferences/ if you have more than one account) to your Desktop. This is just for having a current backup copy of that file.
  3. Get into Time Machine and restore a copy of the same file you know it was working (in my particular case I’ve chosen a copy two-and-a-half older). It will ask you to substitute the current file (you want to).
  4. Open Mail. Your email messages should be showing again!