“There are all these payment providers that monetize on the payments themselves,” said Feldman. “We provide payments as a service to our customers to give them the easiest way to manage that part of the process. There is a revenue stream coming from Direct Pay but that isn’t the reason we do it. We want to turn payments into a commodity.”

https://techcrunch.com/2021/05/12/stampli-raises-50-million-in-series-c-to-help-companies-intelligently-manage-invoices/