Let people register for a live broadcast and send them a reminder

On Stage, Broadcasts, open Registration and reminders on a broadcast.

1. Set when it starts, and turn on People can register on the watch page. A registration form then appears on the watch page until the broadcast goes live. Each person gets one confirmation email from your organization.
2. When it is time, choose the mailbox to send from (an events mailbox works well, so replies reach a person) and press Send reminder, then confirm. Every registrant gets the reminder as a Bcc, so nobody sees anyone else's address. A second reminder within 15 minutes is refused, so a double click sends one.

Registration is off until you turn it on.