Heratech

Delete from the registry. I don't know your version of Windows, but for Windows XP and 2000, the mail profile is in:
HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles.

Locate the bad one and delete it.

Source: http://help.wugnet.com/office/delete-profiles-mail-applet-Control-Panel-...