New registered users to be added to newsletter email list
How can it be setup so that when a new user registers to the forum, their emails is also added to a mailing list?
I use Campaign Monitor if that helps.
wpForo doesn't have its own users system and it uses WordPress core (native) one. When you register wpForo user you register new Wordpress user with forums specific extra fields. I think you should try to find the solution in Campaign Monitor plugin's settings.