These lists are maintained by
Earth2-digest - this list lumps the Earth2 list messages together in bulk shipments so you won't get as many daily messages but still get all the info. I haven't subscribed to this one but I think I've heard it's several/day.
E2-Humor - for primarily E2 related humor (TGB&G and the like) but all funnies are welcome. This averages 10-20 messages/day.
E2-FanFic - For all those E2 fan fiction writers/readers. A few stories a week during a "good" week.
Earth2-Thread - A summary of the main lists activities for the week. This is just one message/week and gives you the main events that transpire on the Earth2 mailing list.
Also, Eden Advance now has it's very own Email address, it's EdenAdvance@stargame.org (no, it's not case sensitive). Please feel free to pass this address along as an initial contact point regarding E2:EA information and activities.