I have a secondary email address for my Agoracom account and trading. I looked at it today and found the Digests. They are a short synopsis of the posts from the hubs you contribute to. Sometimes it is cumbersome when I am roaming with phone only to log into the entire website. This gives me enough information to see if there has been response to a post and what the tone of the discussion is. It's quick and easy to glean the activity level and direction the discussion forum is taking.

Pull up the email address associated with Agoracom and see if you have these updates. They may be for folks who have recently posted on a thread. I'm not sure of the parameters. 

OG