How you recover a deleted item depends on the amount of time that has passed since the item was first deleted.
Within 31 days: Check your “Deleted Items” folder
When you press the “Delete” key on a highlighted item, the item is removed from the current location and placed in the “Deleted Items” folder. This folder is treated like all other folders with one exception; its contents are removed automatically after 31 days. You can also remove them manually by pressing “Delete” again on a highlighted item.
Within 90 days: Use the “Recover Deleted Items” command in the Tools menu
A document that has been removed after being in “Deleted Items” for 31 days, or that was manually deleted from the “Deleted Items” folder, will remain available for recovery for another 90 days. These items are recoverable using the “Recover Deleted Items” command in the Tools"menu.*
Within 120 Days: Contact the Server Administrator
90 days after a document moves into the "retained" state, it is purged from the mailbox. Documents can also be purged manually through the "Recover Deleted Items" command. Either way, once a document is purged, you will not be able to recover it again from the Recoverable Items folder.
In general, a document that has been deleted from a normal folder is still recoverable for up to 120 days without the need to restore from backup tapes.
How to Recover Deleted Items from Outlook Web App
- Right-click on the Deleted Items folder.
Click Recover Deleted Items.
Select the items you want to restore by selecting the boxes that appear when you hover over to the left of the e-mail.
Click the Recover Selected Items icon (yellow envelope with a blue arrow above the search box).
Use the search box to look for items in your Deleted Items folder but note that you cannot open an item until you recover it.
You can also purge items from the Recoverable Items folder but when you do so, you will not be able to recover those items again from the Recoverable Items folder.