To email your YABB forum members, please follow these steps:
1. Log into the YABB administrator area at http://www.yourdomainname.com/cgi-bin/yabb/YaBB.cgi?action=login (where yourdomainname.com is your domain name)
2. Select Admin link
3.Select the E-mail Your Members link from the members control box
4.)You can add members by inserting new e-mail addresses seperated by a (;) colan mark.
This document is FAQ561.