OWA - Recovering deleted items
To recover deleted items:
1. Right-click the Deleted Items folder in the Navigation Pane.
2. Click recover deleted items.
3. Select the item you want to recover and right-click on it in the Recover Deleted Items list. Now select recover.
4. Now you will get a confirmation message telling you the email will be recovered back to its original folder. Click ok.
5. You have now recovered your deleted items.