About this plugin
WooCommerce does not email shoppers when a product is back in stock. Restock Mail does that one job, and shows you whether the mail actually left the server. Out of stock product: a form on the product page (“Notify me when back in stock”). You restock: waiters are emailed automatically (WooCommerce Action Scheduler, same system as order emails). WooCommerce → Restock Mail: each signup is waiting , queued , sent , or failed , with the error if it failed. Send a test email from that screen before you open the waitlist. Unsubscribe link in every restock email (also List-Unsubscribe for Gmail). One click deletes that address from the list. The plugin does not send mail through Shuudev. Mail goes out from the shop, with the shop’s WordPress / SMTP setup. If WordPress cannot send mail, the log says failed instead of pretending it worked. Requires WooCommerce.