WooCommerce Back In Stock Notifications

Back In Stock Notifications for WooCommerce gives your customers an effortless way to know when your products are restocked, and brings them back to your store. Back In Stock Notifications makes it possible for logged-in customers and guests to get notified via e-mail when out-of-stock products become available. The plugin appends a sign-up form right after the “Out of stock” availability status of sold-out Simple products and Variations.