Zoom.Mtg.Join UserEmail must be unique

How can prevent user from joining using same email?

Which Web Client SDK version?

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Add any other context about the problem here.

Hey @meetmatt,

Thank you for reaching out to the Zoom Developer Forum. The best way is to check the email the participant entered before they join. You can keep a list of emails for participants that have joined and check against that or use SDK functions ZoomMtg.getAttendeeList()

or Webhooks like meeting.participant_joined to keep track of participants.

Let me know if that helps.


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