macOS has a cool built-in feature for collecting receipts: Go to "File > Print..." and then in the lower left pulldown that says "PDF", select "Save to Web Rece

macOS has a cool built-in feature for collecting receipts: Go to "File > Print..." and then in the lower left pulldown that says "PDF", select "Save to Web Receipts", it will save a PDF to a folder called "Web Receipts" in your "Documents" folder. Works for both website receipts and email receipts.