7
It's not a good idea to try to mass mail users using XOOPS. For mass mailings over 50 users, you would be better off to use a tool like
http://www.phplist.com/ that can send the mails in batches.
Many hosting providers have measures in place to block scripts that send out more than 100 emails at a time. Most ISPs check for such pattern and could blacklist your domain if your not careful.
Insanity can be defined as "doing the same thing over and over and expecting different results."
Stupidity is not a crime. Therefore, you are free to go.