Recover permanently deleted mail in Outlook
Users normally delete an item, sending it to the deleted items folder, then empty the deleted items folder. If a user wants to recover the item, they can use the “Recover deleted items” functionality of Outlook. But how do they recover items permanently deleted from their inbox, that have bypassed the deleted items folder?
The article details a registry key that can be implemented that will turn on the “Recover deleted items” functionality outside of the deleted items folder. It will let you see “deleted items” that skipped the deleted items folder and are recoverable. This all assumes that your organization implements deleted item retention.