Because of my problems with hotmail.com who accuse my site for sending spam to hotmail users, despite it is only services from my non-commercial datingsite, I try to locate whom of my members using hotmail.com.

I can list all hotmail-users by searching, but then I can't filter those hotmail users by groups - ex. "pending". I can also not filter "pending" first, and then search for hotmail-users in this group.
As it is now, I can't send hotmail-users my informations, therefore I want to filter them. And I will also recommend new users NOT to use hotmail.com (or aol - it's the same problem), and perhaps instedt an another mailprovider.

Is it possibely to search first for emails and THEN filter by groups?

Or let members go into an special emailgrop when they create an account?

Best regards
Freja