How to easily Recover Permanently(shift - delete) Deleted Mails in MS Outlook easily?

I guess this tip is gonna be really useful to many of you. How many times have you accidentally pressed the shift-delete on an important mail in Outlook and didn't know how to retrieve it back. Well, here's the simple solution to retrieve that important mail again.

Below is the procedure to recover shift deleted [permanently deleted] mails from Microsoft Outlook.

• First go to Run and type regedit.
• Go to the location: \HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\EXCHANGE\CLIENT\OPTIONS registry key.
• Right click options and add new DWORD VALUE (data type is REG_DWORD) and then right click and rename to DumpsterAlwaysOn. It is case sensitive.
• Then right click and modify and make the value 1 to turn the Recover Deleted Items menu choice on for all folders or enter 0 to turn it off. [I would recomend 1 for now].
  Update : When you modify the value, use the "Decimal" option and NOT the "Hexa-Decimal" one. Thanks to William for this finding.
  
• Then go to Outlook , choose "Recover deleted items" option from the Tools Menu to get back your "permanently deleted" mails!
  

P.S. : This procedure can recover mails which were deleted by pressing shift+del in the past 4 days only.