ANSWER TO YOUR GENERALISED QUESTION: cXML http://cxml.org/ http://cxml.org/ , OCI and EDI (mentioned above) are alive and well and commonly used for large corp

ANSWER TO YOUR GENERALISED QUESTION: cXML http://cxml.org/ http://cxml.org/ , OCI and EDI (mentioned above) are alive and well and commonly used for large corporates to deal with their suppliers without paper. cXML (or even OCI) for the purchase order stage and EDI for the invoice stage is a typical setup. ANSWER FOR YOUR SPECIFIC ISSUE: The reason this doesn't and will never exist is that every business is different - you're essentially dealing with people like Joe Bloggs not standardised processes like HTTP. However, help is at hand: https://www.receipt-bank.com/ https://www.receipt-bank.com/ - they take your email and paper invoices in any format, scan them, key in the data and inject it straight into your accounts system (or at least let you grab a spreadsheet).