Bagel app automates backorders & pre orders with real-time Shopify inventory sync and simple purchase order uploads by merchants. Bagel automatically tracks inventory and incoming stock to switch products between in-stock, backorder, pre-orders, out-of-stock states. No SKU-level campaigns or manual storefront toggles needed. Just upload POs and manage backorders for large catalogs while selling through stock outs and reducing operational work. The app doesn't provide payment feature or options.