Could we please get a RSVP created as a purpose for Events? This is similar to Event Registration however RSVP is better when the invitee wants to notify the sender they can't attend an event.

Other reasons why this will help with events:

• if they do not want to attend they get removed from the mailing list/segment and thus don't receive "annoying" emails reminding them of the event.
• Better user experience all round for the invitee and sender.