my baby's in the white fluffy clouds

I would love a non-mit mailing list tool, especially since half of our house doesn't have real MIT accounts and can't update our party list themselves. The main list alternative I've heard posited is google groups, but no one seems to like it that much. I haven't looked at it too much myself, other than having used it for our mystery hunt team. (But in general I am kind of hesitant to turn my life over to google.)