Hi Aderson,
Another question for you. Are you able to prevent new users from receiving emails after registration. I have set up an event booking system and this module also send emails after making a booking, the customers are complaining about the quantity of emails received.
I have found this topic on the subject but it looks a bit hacky
http://www.dnnsoftware.com/forums/threadid/378461/scope/posts/threadpage/1
Thanks again
Phil