Hi Jane, I've processed the request to migrate these registrants from the old webinar to the new one. If this isn't possible, there is an alternate method that will work through a 3rd party service called Zapier. We will update you once we know how to proceed.
Can we create a webinar, import our customer email list (500 000), and send invite to all, using GoToWebinar? When a customer registered, will he get the second follow-up invite we send one week later? And is there a unsubscribe feature (customers who do not want to get our 3 invite emails before the webinar starts)?