It depends on the type of mail account, but they may be in a Personal
Folders .pst file, see http://www.slipstick.com/config/backup.htm

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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
> Where does Outlook store already read messages that were
> sitting in my inbox. I have a new hard drive and after
> connecting to my email provider, all my previous messages
> are gone. I have access to my old hard drive, but don't
> know where the messages are stored?? Thanks anyone.