

Storefront email capture form on a sold-out WooCommerce product.
StoreFixKit Back In Stock Notifier adds a lightweight stock alert workflow for WooCommerce stores.
The free plugin captures shopper email requests on sold-out products, prevents duplicate active subscriptions for the same item, and sends one restock email when the product or variation returns to stock.
The plugin works entirely on the merchant’s WordPress site and does not require a StoreFixKit account.
Core features:
External services:
wp_mail() function and the mail transport configured by the site owner.