how to delete/change contacts saved when e-mailing

[CSD]

When addressing e-mail all contacts starting with 1st letter;e,g, "a"
come up in a box. How do you edit what is stored in your e-mail memory?

 

[Vince Averello [MVP-Outlook]]

You can delete names in the list by highlighting a name in the list and
hitting Delete when it shows up in a drop down.

There's more info and a link to an editor for the cache here:
http://www.slipstick.com/problems/nicknamecache.htm