Is there a way in Nodeworx to send a broadcast email (Bulletin) to all email addresses on the server? I am thinking things like general system announcements, etc.
Nope. It’s on the list, though. Officially “Coming Soon” 
I’d be happy to test! I really miss that feature from my old mail server.
Is there a way (plugin, api, phpadmin, etc) to get at the user/domain/whatever db?