Do remember to be careful. I received one mass mailing, sent to a dozen or two dozen people.
A week later, I was still getting multiple email alerts per day, as every person said "yes", "thanks", "OK", "Good Idea" what seemed like several times each.
Then a few people carried on chatting, and there is no way to get off such a list once on it, as far as I know. The original poster stopped sending new posts to that list, but every recipient was able to contact the entire list whether they intended to or not.
It got old, fast.