ACP: Email members from secondary usergroup
 

I recently wanted to email my Paid Subscribers (who are put in a particular secondary usergroup), only to find that you can only email users based on their primary usergroup in ACP.

So, I think this would be a userful mod to a lot of people, and would very much appreciate it if someone could whip this up, if it interests them also.

I did provide a solution for 3.0 once. If you would search for posts containing 'secondary' and made by me, you will probably find it. It might still work in 3.5.