They're not stuck. Once someone has logged in and viewed the message you sent to them, it will be moved to the sentbox. If its been a while, I'd say delete it, since the recipient is not logging in to view them. Delete, then send a new one if its important.
Here is the scenario... you sit in your 2 piece climbing stand and your foot inadvertently bumps the lower section while there is no weight on it - and it slides down the tree, out of reach!
OK, you are safe - you have a string tied from the upper section that you are sitting on and the foot portion that slid 4-5 feet down the tree. All you have to do it pull the other section up, reposition it and you are back in business, correct?
Have you ever tested this theory?
I have -...