Quick Message Cleanup
You can easily delete draft messages! These are the messages you've created but haven't sent out yet.
To do this, just head to the Message Manager tab and click on 'Drafts'. You'll see your list of drafts there. If it's empty, you know you've got no drafts hanging around. But if you see a message you don't need anymore, just select it and hit the 'Delete' button to clear it out.