Suppose you have an event with 10k people registered for your webinar. Typically sending a reminder would rotate with other webinar users. In this case, the 10k webinar starts in 5 minute reminders, may exceed 5 minutes and arrive late with standard reminders. Therefore, our system will automatically track if you have access to the Priority Email Delivery and make sure that your emails are given Priority Delivery status and sent first ahead of others. Therefore, arriving on time.