On the administrative side, the plugin adds a button in the product page that can be used by the administrators of the store to communicate that the specific product is available again to the customers that subscribed to the waiting list.
You can also fill in the content of the email on this page:
For your customers receiving this message it will look the following way:
The email sending for the free version is only possible manually by the admin from the product edit page, as you can see down here.
