Yes agreed as we talked about before. The "group" would be a spear head group to e-mail different letters to people so they can have it on their PC to send out as individuals. Maybe on a specific web site and member log in to retrieve said letter to down load. Just a thought.
The suggestion of a 'form' letter might not be best, since a company will very likely make a distinction between getting 100 copies of the same letter with the only difference being the name and email sourced, as opposed to 100 differently worded letters on the same subject.
For example, think of how it feels when two persons contact their congresscritter. One tries to share their view on the National Reciprocity legislation, the other tries to share their view on the Fast & Furious hearings, and they BOTH get identical responses. Copycat responses will not be seen with the same weight as will separate letters that aren't copies.