This app lets buyers view, print, and save receipts and invoices as PDF from the order status page. It's great for store owners tired of answering "please send me a receipt" requests. Just enter your store details and qualified invoice number, and buyers can issue documents with recipient names, notes, and tax-rate breakdowns. You can also control how refunded or unpaid orders are handled. No issue history or buyer input is stored, and the button appears automatically.