Whenever a product is out of stock in your store manager, the button in the store will change to . Your store customers can click this button to submit their email ids.

When the product is back in stock i.e you change the stock level in the Shopnix store manager, an e-mail is sent out automatically to all the customers who subscribed to be notified. This e-mail will indicate that the product has just come back in stock and can be bought right away.

To access all such submitted email ids, login to store manager & goto Admin > Products > Product Notifications.This feature helps people to sign up to be notified for out of stock products.