Running Outlook for Mac 2011 with 7 AT&T POP accounts. Using just one of these accounts I created 3 messages that I ended up saving in the Drafts folder, the oldest created in May 2013. I eventually did send one of the messages and deleted the other 2. Here's my problem. When I start Outlook it again has these 3 emails in the Drafts folder and opens them.

So I delete the open drafts and then delete the drafts in the Drafts folder. BUT, when I restart Outlook these 3 drafts reappear in the Drafts folder and are opened.

I've also tried changing the recipient for one of these drafts and emailing it, but it still reappears when I restart Outlook.

I could see where I might have some sort of synchronization problem if these were IMAP accounts, but they're POP and are not used on any other PC's in the house. I've looked at the AT&T account on the Yahoo server, and these emails are not in the drafts folder on the server. I'd have to conclude that somehow they are being retained by Outlook on my Mac.

Help!!