Capture more revenue with automated back-in-stock alerts, waitlists, restock notifications, and pre-order flows for Shopify. Waitlist Flow helps merchants recover lost sales by automatically notifying interested customers when inventory becomes available again due to cancellations, refunds, or restocks. Customers can join a product waitlist or subscribe to stock alerts in a single click. When availability opens up, the next customer is instantly sent a notification with a secure checkout link