Instructions
1) Sign in to Outlook on the web.
2) Click Deleted Items. Then, click Recover items deleted from this folder.
3) Choose the item(s) you would like to recover. A check will be placed on the left-hand side of the item. If you would like to recover multiple items, hover your mouse over another item you want to recover. Then, click the check box that appears to the left of the item. Continue to do this until all necessary items are checked.
TIP: Use the search bar to search by the item sender, subject, or body.
4) Click Restore.
Outcome
The items will be restored to their previous location in the mailbox.