Add an RSVP Note and Check Who Can Read It

An RSVP note in Google Calendar can explain a response, but it is not a private message to the organizer. Google’s current guidance explicitly says the note is visible to all invitees. Use it only for information appropriate for that audience.

Track Guest Responses in Google Calendar

A Google Calendar organizer can review guest responses in the event instead of inferring attendance from email traffic alone. Check the guest list for the relevant version of the meeting. An invitation sent successfully does not establish that everyone has accepted it.

Choose Per-Event Guest Response Emails in Google Calendar

Google Calendar can control guest response emails for an individual event or recurring series. This is narrower than changing a calendar-wide email preference. Review the current behavior carefully, especially when guests use external calendar services whose RSVP tracking depends on that email channel.