Are there any good/healthy/non-toxic/moderated online group meetings/communities for DBT or NA or anything similar?

Obviously an in person group session would be great but its not always possible, and likewise sometimes the various BPD subreddits *can* be helpful sometimes, but can also be toxic or more harmful than helpful at times. 

So, does anyone know of any online groups that have helped them and have some kind of moderation or oversight?