Hi Tim,
The subscription setting is for the forum posts you're interested in. The "every post emailed to you" is a different thing we set up to make things like Yahoo.
The thread with instructions on removal and joining is here:
http://6066gmcclub.com/forum/showthread.php?t=47284
If you have problems with it send me your email address in a PM and I'll manually remove you. It will send you a confirmation if you're removed.
-Jeannie