Price & Out-of-Stock Alert Module

Description

The module adds a "Price / Stock Alert" button to the product page and sends notifications to customers who asked to be told when a product is back in stock or reaches the price they want.

How the Price / Stock Alert module works

The module is installed from the admin panel under "Extensions => Extensions => Modules".
It lets you view the list of customers who requested a "Price / Stock Alert".
On the page of any product that is out of stock and cannot be ordered, you will find the "Price / Stock Alert" button. Customers are invited to enter their email address to be notified when the product is available again and/or to set the price at which they want to receive an alert.
The customer list can be accessed in the Modules section of the main menu by clicking "Price & Out-of-Stock Alert".

It shows a table with the following columns:

The date the customer asked to be notified about the product's stock
The product and the price the customer is interested in
The customer who asked to be notified
The notification status

The module is compatible with OpenCart 2.3.x and 3.x.