Shopify’s native returns have no photo upload. That is the gap.
Customer accounts can take a return request. They cannot take a photo of the item. That is why damaged claims still bounce into email — and why the image you eventually get is the easy kind to fake.
As of September 2026, Shopify’s built-in self-serve return form — in customer accounts and the Shop app — has no file or image attachment. Apps cannot inject an upload into that form. Separate returns portals and customer-account UI extensions can collect files in their own flow. They are not the native request.