Working on module to send mass email to groups

I am currently working on a mass contact module designed to use views to create lists of users to send email to. The discussion is here: http://drupal.org/node/134931.

One of the modifications I've made is to create an views filter for OG that I can use to list users by group(s) that they belong to.

I'm posting this here for those who are interested in this functionality.