datascoopservices

Datascoop – Smart Restock helps WooCommerce stores collect customer interest when products are out of stock and when shoppers want a price-drop alert.
Basic version includes:
<ul>
<li>Back-in-stock alert form for unavailable simple products and selected unavailable variations.</li>
<li>Price-drop alert form in the product summary area.</li>
<li>Logged-in customer email capture.</li>
<li>Guest email capture with consent checkbox.</li>
<li>Email notifications when products return to stock or reach the customer target price.</li>
<li>Subscriber list and email logs inside WordPress admin.</li>
</ul>
This WordPress.org version is fully functional for the features included in this plugin. It does not require a license key, does not contact a Datascoop server, and does not send site/admin data to any external service.
For PRO feature details, visit: 
https://datascoopservices.com/smart-restock-plugin-for-woocommerce

Datascoop – Smart Restock

Basic WooCommerce back-in-stock and price-drop alerts for product pages.

aleswebs

AdMail is a powerful tool to help boost your sales and enhance customer experience. With AdMail, your customers can subscribe to out-of-stock products by providing their email address and receive an email notification when the product is back in stock.
AdMail is compatible with all WooCommerce product types, including simple, variable, and grouped products. You can customize the subscription form to appear as a popup, and choose from a variety of email templates. You can also enable/disable the subscription form for guests, provide an unsubscribe option for users, and enable/disable email submissions automatically.
AdMail prioritizes speed and performance, and your customers will enjoy faster performance thanks to the Ajax feature implemented.

AdMail – Multilingual Back in-Stock Notifier for WooCommerce

AdMail is a WooCommerce extension that enables your customers to subscribe to out-of-stock products and receive an email notification when the product …

Datascoop – Smart Restock vs AdMail – Multilingual Back in-Stock Notifier for WooCommerce