Please note this test and send email process found by clicking preview when building an EDM can only test and sample the actual "EDM design." (look and feel).
The System cannot test RSVP pages in this preview mode as this requires all of the event and guest configuration data. That configuration is set on the event and is added to the EDM at send time by injection of data in your {{tags}}. Until the sending process has occurred and injected data - any preview can only preview "style".
If you click on any RSVP tag whilst in this mode you may see what's left in your cache from a previous RSVP test.
Top Tip
in order to test the RSVP pages we always suggest to add yourself as a guest to the event in play. Send an invite to yourself. Fully test the full workflow including reciept of any confirmation.
At the end of the test cancel yourself as a guest.
Remember invites and RSVP can be set by Brand. (as at August 22)