Put the addresses in the BCC (Blind Carbon Copy) field of the mail header.
If that field doesn't show while you're composing a E-mail go to the View
menu and select 'BCC Field'.
It won't say "Undisclosed Recipients" anywhere. Not sure why it needs to.

Signature
Russ Valentine
[MVP-Outlook]
> Is there a way to have the members of a Distribution List not identified
> in
> the "To" or "CC" block??? Have it just say "Undisclosed Recipients"???
>
> Ken