It is important that you as organiser know what happens when people unsubscribe to your event:
The contacts that unsubscribe to your event will be transferred to the list ‘Cancelled’ and can only be found there. The reason for cancellation is mentioned on this list.
An unsubscribed contact is no longer included in the ‘Total’ count of invitees in your registration overview.
You can no longer send emails about this specific event to an unsubscribed contact.
It is not possible to remove unsubscribed contacts if tickets have been sold within an event.
Unsubscribed contacts can be manually added again and invited.