Products > Product Notifications-Add > Edit
From Shopnix Help
How to add Product Notifications?
You also can add the customer’s mail id manually for notifying him for product availability.
By Admin > Products > Product Notifications >Add New Notification.
Now fill the product name and email id for which you want to notify the customer and click on Add button showing in following image.
If you have more queries or would like assistance with this,please contact us on email@example.com.