UPDATE: Email is now enabled.
Emails will remain PRIVATE, so other users cannot see them. You cannot change your address in the forums, because it comes from BscotchID which is a separate entity (we'll eventually have that feature within BscotchID itself).
Emails will come from
robot@butterscotch-shenanigans.com, so add that to your address book if you haven't already.
Not sure how post/topic subscribing works with email. Maybe it doesn't. On the list of things to look at.