BackBy Back in Stock Notify Me

Shoppers who see "Sold out" usually leave. BackBy puts a "Notify me" form where Add to cart was, on every sold-out variant. Add it once as a theme block, no code edits. Each signup lands in your waitlist, grouped by product, with a live counter on your dashboard. Export the list as CSV whenever you like. BackBy asks for access to your products and nothing else: no orders, no customer records.