When a product hits 0 stock, StockSignal pauses it before the next order lands. No more refunds. No more 1-star reviews from customers you couldn't ship to. Back-in-stock notifications and low-stock alerts included for free.
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Shopify lists products as available even when stock is 0. By the time you notice, you've already taken money for things you can't ship. What actual merchants say:
The cost of a single oversell — customer support time + refund fees + a 1-star review — is more than a year of StockSignal. So why doesn't anything stop it from happening?
STOQ does back-in-stock. Klaviyo does email. Merchbees alerts you. But none of them stop the oversell from happening in the first place. That's the one thing StockSignal is built to do.
The moment a product's inventory hits 0, StockSignal flips it to "not for sale" — before the next customer can place an order you can't fulfill. Restocks restore it automatically. The unique thing no one else does.
For you · saves moneySet a threshold per product. Get an email — or Slack message on Growth — when stock drops below it. Catch the problem before zero, not after.
For youCustomers who arrived during a stock-out get pinged the moment you restock. Bring back the buyers you'd otherwise lose to a competitor. No email platform required.
For your customersStart free. Upgrade when you grow.