Stores on the Retail or Brand plan have the ability to automatically send out FB messages whenever you go live:
Your shoppers have to opt-in to getting these messages, which they can do by commenting 'subscribe' on any of your FB Business page posts. We recommending pinning a post at the top of your FB Business page instructing your shoppers to comment 'subscribe'
Once they comment 'subscribe', they'll get this message:
And once they click "Get daily messages", they'll automatically get messaged whenever you go live
You can see who has subscribed from this section of your SETTINGS tab:
In addition to subscribing by commenting 'subscribe', anyone who gets added to the waitlist automatically becomes a subscriber to your live announcements as well