Mailing App Duplicate Problem...

I've written an email sending script to mass send to our database - some of
our subscribers are subscribed to multiple list, and so when selecting the
entire database, I want to ensure I don't have Duplicates.

To avoid this, I am selecting the recordset of all users, ordering by Email
address, sending the email, moving onto the next record and then starting a
loop to keep looping until the email address is different, but it doesn't
work... see example below... Code: