Need an option in DDMS to send invoices to customers via cXML

Need an option in DDMS to send invoices to customers via cXML if they don’t have a punchout with GOS. I am seeing more and more of these requests to connect from 3PV like SAP and Ariba and it seems like it just puts more manual work on the Dealer to upload invoices and such. According to the setup we can choose Online (not a good option) cXML or EDI (also not a good option IMO). So cXML would be great if we can do that by customer.