Mark messages as private, personal or confidential using.
Outlook 2003
http://office.microsoft.com/en-us/outlook-help/mark-a-message-as-private-personal-or-confidential-HP005242880.aspx
Outlook 2007
http://blogmines.com/blog/2009/11/09/how-to-send-email-with-importance-and-sensitivity-in-outlook-2007/
Outlook 2003
http://office.microsoft.com/en-us/outlook-help/mark-a-message-as-private-personal-or-confidential-HP005242880.aspx
Outlook 2007
http://blogmines.com/blog/2009/11/09/how-to-send-email-with-importance-and-sensitivity-in-outlook-2007/
