Recover Deleted Items from a Shift Delete in Outlook

By default exchange will delete deleted items after 7 days. Before this time they are only flagged for deletion and can be recovered.

In Outlook when in the Deleted Items folder if you go to Tools > Recover Deleted Items , you will then see a list of all mails deleted from deleted items over the last 7 days.

This option is only enabled on the deleted items folder by default, but can be easily enabled on all folders. That way if you have done a shift-delete (which bypasses the deleted items folder) you should still be able to recover it.

To enable this feature, you can either run the file from the following Microsoft Fix it link http://go.microsoft.com/?linkid=9643538

or make the following registry change:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Exchange\Client\Options
New DWORD: DumpsterAlwaysOnData with a value of 1.

Please see the following Microsoft article for more information.
http://support.microsoft.com/kb/246153