I also made a similar request.
Continuing the discussion from Option To Be Notified of RSVPS:
How can we drum up enough support to have this implemented?
We have quite a few events on our calendar and it is a pain to go into each event just to see if someone has RSVPd or not. I miss being able to receive an email whenever someone RSVPs like we did on our old troop site. It was optional (we had to check a box that we wanted to be notified of changes). It was also helpful because it gave us a timestamp of when people RSVPd or withdrew their RSVP, etc. Hopefully others would find this useful.