On the Go Toolbar click on the “Folder List” and then on the Navigation Pane, click on “Deleted Items”
Click on Tools on the toolbar, then click “Recover Deleted Items”
This window should now come up
Click on the item or folder that you want to retrieve and then click on the Recover Selected Item icon
The item is recovered and saved in the Deleted Items folder.
Notes
This feature requires you to use a Microsoft Exchange Server e-mail account. In addition, your administrator must have enabled this feature on Microsoft Exchange Server version 5.5 or later.
Some items or folders may not be recoverable because the length of time that deleted items are stored on the server is set by your administrator. For public folders, expiration dates take precedence over the length of time set by your administrator.
If you work primarily offline, you need to log on to your mailbox on the server to retrieve deleted items.