Just to clarify, you want to be able to send an event registration out to a list of contacts, but ONLY the contacts that receive it would be able to register. They wouldn't be able to share the URL with anyone or if they did, somehow non-contacts still wouldn't be able to register.
We do have the option to set the event as private, which would require an access code. Of course, I suppose someone could somehow get access to the code and registration link, but that would be really hard to control for under the circumstances. I definitely appreciate any additional thoughts or use cases you can provide.
Our Feedback board is changing! From updated statuses to clearer processes, we're working to improve the conversation between you and our Product teams