Over on the zope and zope-dev lists, there's currently agitation to make them members-only mailing lists. The point is that spam could not get thru then (unless posted by a member). What would zodb-dev members like? Posting by a list member would not be affected, unless you attempted to send a message from an email account other than one you subscribed with. In the latter case, your message would be bounced back to you. You could worm around that by subscribing to zodb-dev with that address too, then going to your list membership page on the web and checking the box to suspend email delivery on that account. Then you could post using that account too, but wouldn't also get zodb-dev email on that account. I'm the list admin for zodb-dev, and don't have a preference. If you do, and it's strong enough to scream it, shout. The loudest screamer will win <wink>. By default, I won't change the current policy (anyone can post here, member or not).