RestockPing

Back-in-stock and low-stock alerts for your Shopify store — a storefront "Notify me" widget for out-of-stock products, automatic emails the moment stock returns, and low-stock heads-up for you.

• Storefront widget. Add "Notify me when available" to any product page from the theme editor.
• Automatic emails. Every pending customer is emailed the moment a variant is back in stock.
• Low-stock alerts. Get a heads-up before you sell out completely, with a configurable threshold.