Hi Nick,
Discourse was specifically chosen because it gives you several email options, including one that works like Google. In your profile, it lets you opt to receive either digest emails or an email of every post (the way that most people have Google setup). It lets you reply to the email of that posting, or click "Visit Topic" to go directly to the full topic thread. As with Google, you can start a topic by sending an email. This is described in
If anyone finds these steps to select an email option too complicated, I can assist you.
(I know changing systems is a PITA, but I really don't see why getting an email from Google is better than getting an email from Discourse)
Jon
N26C #115 - Inua - Kingston, NY