This is precisely how we set things up here. If you want to reach our moderators e.g. about a problem with your account, you can email Moderators@discourse.org. It barely ever happens however even though it’s listed on the about page.
I seem to recall @awesomerobot had posited a neat idea a while back, to allow people to reply and create their account as a second step to creating a post. But that is not what we are talking about here.