How to get full address in "To" using first few letters of name

[bobengel]

At one time, I was able to automatically get the full email address
automatically entered in the "To' line after entering just the first few
letters of the contact name. Now this only happens when I send another
message to the same person I previously sent. How can I get this to work for
all contacts?

 

[Russ Valentine]

Autocompletion has never used your Contacts. It only uses a cache of
previous recipients.

 

[Russ Valentine]

If you want Outlook to search your Contacts, you would use autoresolution
(hit Ctrl-K after typing a partial address you think should match), not
autocompletion.