Look for '' and drag it the Desktop, then restart Mail.Īlternatively, you can use this one-liner in your Terminal app (located in the Utility folder): killall Mail &> /dev/null mv ~/Library/Containers//Data/Library/Preferences/ ~/Desktop & open -a Mail Quit Mail, then go to Finder and press ⇧⌘G and enter (or copy) the following: ~/Library/Containers//Data/Library/Preferences which you will need to set up after following:
If 1 and 2 are not accessible (grayed out) Go to the Mailbox tab and at the bottom click on Rebuild. Next step is to rebuild your Mail database. In Mail, go to Window → Connection Doctor and let it verify your connections to see if all works there. Before you delete it, see if you can repair Mail.