Hello @NSU ,
The RSVP block tracks clicks in the same way the rest of our system does. Since these links are coded, it means that if a contact forwards an email, those forwarded recipients' clicks will count for the original contact. If you want to get RSVP and click reporting data from the forwardees, it's advised you get them added as contacts you can directly email. Otherwise, your other option would be to set up an event registration. that would require people to register to confirm their reservation / interest.
If you're including an RSVP block in an event invite, I would advise not doing so. It serves no purpose, since the act of registering for the event is the RSVP, and all necessary interest gauging can be done via the registration form.
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