You can offer Digital Download products in your Catalogs to be sold along with prints or on their own. 🙌 Digital Downloads will be automatically delivered to your client after checkout so they can quickly download their files - no action is needed on your end!
Pro Tip: to bypass automatic delivery for Custom Fulfillment Catalogs, you can create a "Product" rather than a "Digital Product" in your Catalog and name it accordingly. (See this example)