Highlight the address and hit the delete button.
You don't say what version of Outlook you use, but you should be able to
configure automatic capture of email addresses you reply to in Tools >
Options.
--
Kathleen Orland - MVP Outlook
Outlook Tips:
http://www.outlook-tips.net/
http://www.howto-outlook.com/
"Loving Wyoming" wrote:
> Email addresses are automatically added to the "To" drop down list. Some are
> no longer valid and I would like to delete those. How do I delete old
> addresses?
>
> One other question-is there a way to automatically have the addresses in the
> drop down menu added my address book?
>
> Thanks
>