Waitlist on sold-out products
Shoppers leave an email when a variant is unavailable. You keep the demand signal instead of watching them bounce to a competitor.
Back in Stock
Turn sold-out moments into recovered revenue.
A clean Shopify app that lets shoppers join a restock waitlist and emails them the second inventory returns—so demand never disappears with the last unit.
Built for merchants who hate leaving money on the shelf.
Capture interest when inventory hits zero, automate the follow-up, and keep your theme feeling native—not bolted on.
Automatic restock alerts
When inventory rises above zero, Back in Stock sends a clear transactional email so buyers can return and purchase while stock lasts.
Variant-level control
Track subscriptions by product variant so the right shoppers hear about the right size, color, or SKU—not a generic product update.
Merchant dashboard
Review active waitlists, see which products drive the most demand, and understand where inventory pressure is building.
Theme-friendly embed
Present a simple “Notify me” experience that fits your storefront without fighting your brand or checkout flow.
Privacy-aware by design
Collect only what you need to send restock alerts, honor uninstall cleanup, and support Shopify’s mandatory customer data requests.
How it works
Three steps from sold out to sold again.
Install & connect
Add Back in Stock from the Shopify App Store, authorize the required scopes, and enable the storefront widget on product pages.
Capture the waitlist
When a product or variant is out of stock, shoppers can subscribe with their email. Subscriptions are stored securely for that shop only.
Notify on restock
Inventory updates trigger alerts to waiting shoppers. They return with intent—and you recover sales you would have missed.
Simple pricing. Everything included.
One plan with unlimited alerts and subscribers—no feature gates, no usage surprises. Billing stays in your Shopify admin.
Shopify app
Unlimited
All six capabilities from day one, including the extras most tools charge for.
- Unlimited back in stock emails
- Unlimited subscribers
- Send alerts from your custom domain
- Full email template customization
- Custom CSS for your store theme
- Free setup & 24/7 support
Ready for serious Shopify stores.
Back in Stock is designed to meet App Store expectations around clarity, data use, and merchant trust—so your listing can point to real policies, not placeholders.
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Public privacy policy & terms
Linked from this site for App Store review and merchant due diligence.
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Purpose-limited data
Customer emails are used to deliver restock notifications—not sold or rented.
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Compliance webhooks supported in-app
Built to respond to Shopify customer data request, customer redact, and shop redact topics.
Stop losing sales to empty shelves.
Install Back in Stock and start recovering demand the next time a favorite sells out.