Every once in a while I will accidently delete a message. In addition owl-ews has a bug which informs Thunderbird that messages are available (which activates Message filters too soon) and some large messages are "deleted" before they are processed by the Message Filter.
From all appearances, messages are only marked as "Hidden" and remain in a Folder until the Folder is compacted. If this is a case, having a Un-Hide menu item for a folder would resolve both issues.
Is this possible?