The receipt.php content template is used to theme the content for an order receipt. The receipt.php template is used by default for order receipt content when requesting order history from the customer account page, and also when sending new order notification emails. This template is also typically included in the thanks.php content template.
This template file is used when located in the shopp subdirectory of your theme.
For instance, if your “My Theme” WordPress theme is located at:
Any Shopp content templates should be added to:
Some of the more general content templates have examples that can be installed in your theme, using the Content Template Starter Set. The Content Template Starter Set can be installed from your WordPress Admin by navigating to Shopp → Setup → Presentation → Theme Templates.