When I first read this I thought you were asking for details about a plot point (how would a minister get email addresses to do a mail-out). I don't think I'd recommend it as a marketing tactic, but I do think it has has merit as a plot idea
. Do ministers hang-out online? Do they blog? I don't know, but that's the sort of thing I'd be looking for if you really want to try and get in front of them.