Posting to openacs.org (still running 3.2.x) provides a nice long list of email addresses when notifications are done. If 4.x is still doing this, I think it shouldn't.
No, it doesn't show to whom notifications are sent. I'm actually embarassed this feature has been removed! Very often when I'm posting to a thread, I'm answering somebody who is not the initial poster. In this case I want to see if he's notified of my answer, or I have to email him manually.
