Ablebits.com Silent BCC for Outlook 1.2.2
Silent BCC for Outlook is the perfect tool to monitor outgoing e-mail.
Once installed, the plug-in will deliver you BCC copies of all messages sent from all user accounts of a PC. Users won't ever know that a BCC copy was sent from their machines since BCC addresses are removed from Sent Items. They can't turn off the plug-in or alter your monitoring settings. You can tweak the add-in to be copied on every outgoing e-mail or allow exceptions.