Maybe make a perl program to read al lthe entries in the emailfile.cgi file and put it on a page, if you click on a particular one it can scan for duplicates and dislay all the account data in a different page from that scan.

Would be like a pre select and a refined select to see fo there is exact match or domain match by splitting the user and domain parts of the email.

Was thinking of if I get time making one for my UBB but dont have to much time lately. Dont thing it would be a complicated program to make and youcould tie it into the UBB user name and passcode for login as not to allow unauthorized access to the accunt data.

Just a thought.