This feature is only available in Preorder Pro + Back in Stock, the previous version of the Magical Preorder app.
To set up a Coming Soon message for a product:
In the app, click Home from the left-hand menu.
Find the product you want to update:
Use the search bar to find a specific product
Or change the entries per page at the top left to view more products
Toggle Coming Soon to enable the label.
(Optional) Set a Product Availability Date to show customers when the item is expected back.
Click Save in the top-right corner. The Coming Soon message will now appear on your storefront.