Enable the option in the "Tools>Options..." dialog box. You'll find it on
the "Preferences" tab. Click "E-mail Options" and check the "Save copies of
messages in the Sent Items folder" box.
--
Brian Tillman
Smiths Aerospace
3290 Patterson Ave. SE, MS 1B3
Grand Rapids, MI 49512-1991
Brian.Tillman is the name, smiths-aerospace.com is the domain.
I don't speak for Smiths, and Smiths doesn't speak for me.