See http://www.slipstick.com/contacts/addauto.htm for various ways to save senders or recipients as new contacts automatically, depending on your version and configuration of Outlook.

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Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>> I need to set up a rule in Outlook to automatically generate a
>> contact from emails that come into a certain Inbox, but I don't know
>> how to do this. I would greatly appreciate suggestions. Thanks.
>
> There is no rule in Outlook that can do this. Perhaps VBA code could. See
> if something at http://www.outlookcode.com/ can help.