Absolutely not!
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Webinars may be configured as public or private events. With attendees registering for the webinar in advance through our built-in registration page or other ingest methods:

Additional options for Integrated Registration, Simple Data Pass, and Bulk Registration exist should you choose to host your registration page off the platform or upload an approved list.

For further assistance, contact us through chat or send us an email at support@webinar.net.