Here is how the emails work:
Step 1: You need to create a webinar and in dashboard you will find its Register Link. Copy this link and send it to all your customers/users. This needs to be done via your own autoresponder or any other advertising method you choose (to show your registration URL to other people)
Step 2: Once someone lands on your registration page and registers for the webinar we send them a confirmation email right away with webinar date and time.
Step 3: If you have set Prior emails from webinar setting page, the prior emails will be sent prior to the webinar timing that you have set.
Step 4: When its time for webinar and Host (you) clicks on "Start Webinar" we send all your registrants email with join link to your webinar. Your registrants can follow the link and it will auto-login them with them having to enter their name and email again since the link sent to them will be unique to their registration. Once all registrants are informed (email delivered to all of them), you will see Email status in dashboard as sent.