I’ve had a lot of questions lately asking how to delete large message stuck in the Outbox so I thought it was probably time to revisit this subject.

First, try setting Outlook offline (look on the File menu). Wait a few minutes and in most cases the message will delete. If not, restart Outlook. It should start in offline mode and you can delete the message.

A few people have had luck cancelling the Send/Receive, but many others report it doesn’t do anything.

If those methods fail, see
http://www.outlook-tips.net/howto/stuck_message.htm