Deleted items can be found in the folllowing two places:
In the Deleted Items Folder — messages will remain in this folder for 30 days and then automatically erased. Up until that point, you can just drag a messsage back to a folder of your choice
Using the Recover Deleted Items Tool — Once a message is erased from the Deleted Items folder, it can be recovered for an additional 30 days. This tool is accessed through OWA by right-clicking on the Deleted Items folder and selecting “Recover Deleted Items”.
Follow these steps to recover your files using the Recover Deleted Items tool:
1. Click “Deleted Items”
2. Click “recover deleted items from this folder.