As a result, some registrants got the email, some didn’t, and attendance really suffered.
Murphy's Law caught me on this one my plan was to send viewers to the YouTube page directly, and my email manager went down for “unscheduled maintenance” just after I sent the email about 25 minutes before the start. Overall, from a timing perspective, sending viewers to the specific YouTube page is the worst option, since you won’t know that URL until 30 minutes before the event.
