it should be under
Tools\Options\Preferences (tab)\E-mail Options\Advanced E-mail Options\
Tick the box "Suggest names while completing To, Cc and Bcc fields" near the bottom of the page.
Good luck.
Tools\Options\Preferences (tab)\E-mail Options\Advanced E-mail Options\
Tick the box "Suggest names while completing To, Cc and Bcc fields" near the bottom of the page.
Good luck.