How does the Wishlist work?
The Wishlist function in the Crystal Commerce admin allows you to see all the products that your customers have added to their "wishlists" in their customer accounts. Wishlists are give you a quick feel for what is sold-out and in-demand, so you may restock those products.
By default, the wishlist function is enabled. Any product that appears on your site and is out of stock will appear with an "Add to Wishlist" button where the "Product Details" button would normally appear. If a customer clicks this button, that product is added to the list of wishlisted items in the Advertising > Wishlist tab. Once the product comes back into stock, any customer with that product on their wishlist will automatically receive an email informing them that the product is available for purchase.