If mail files have been deleted, eg. .PST (Microsoft Outlook) or .DBX (Microsoft Outlook Express) then Recover My Files,
www.recovermyfiles.com will find the deleted files and allow you to access the email.
If your are trying to recover email messages from your existing Oultook or Outlook express programs, then you need to go to
http://www.recover-my-email.com and download Recover My Email. Run this program on your existing email files.