Ok I turned off all my plugins (except Subscribe2) and I still get the same results: creating a post triggers an email but neither creating a page nor changing a page triggers an email. I doublechecked that “Send email for pages” is set to yes.
I’m still following this too and for the record I’m using theme Atahualpa 3.5.1. I can’t disable my plugins at the moment because people are using the site and I don’t have a duplicate dev site (though I should), but I will disable them tonight or on the weekend and test again.