I asked the question due to advanced age and bad memory. It just now came to me. The answer is: When Outlook is open click on File (top left corner) and select and select Work Offline, then go to Outgoing mail and delete the message. Next and very important, Go back to File and Un-click Work Offline or all outgoing mail will remain in the Outbox! I wasted a lot of time before I realized how to solve that problem..good luck
answered Dec 06 '11 at 17:10
You should be able to open Outlook, Click on the Outlook folder called Outbox. Find the email and delete it.
answered Dec 08 '11 at 13:17