Variant waitlists
Collect shopper emails only for sold-out variants with a Shopify theme app block.
Shopify back-in-stock alerts
RestockCue turns stockouts into waitlists.
Capture email demand on sold-out variants, see which products buyers want, and send back-in-stock alerts after inventory returns.
Get started
Turn sold-out variants into waitlists.
Install RestockCue from the Shopify App Store, sync inventory, add the theme block, and start on the free tier.
Restock emails
Send alerts after synced inventory shows the requested variant available again.
Demand dashboard
See top requested products, recent signups, and remaining waitlist capacity.
Admin-safe sessions
Embedded admin screens use Shopify session tokens and work without browser storage.
Inventory workflow
Know what to restock before shoppers leave forever.
RestockCue is built for stores where out-of-stock demand should become revenue signal, not a dead product page.
- Sync inventoryRead products, variants, locations, and available quantities.
- Add blockPlace the waitlist capture block on product templates in the theme editor.
- Notify buyersWhen inventory returns, send the alert and mark the signup notified.