Another option to stop the e-mail

[Guest guest]

would be to request the administrators to remove you from the group. I

know whenever we get one of the spammers who occasionally filter thru

with ads about dating sites etc in a group I moderate I immediately

remove the spammer from the group.

If a Grooup administrator does not respond you could always resort to

breaking one or several of the group rules. That may not be the best

alternative but you will probably get a response and your wish of

stopping the e-mails then.