MOUNTAIN VIEW, Calif.--(BUSINESS WIRE)--Stampli, the interactive invoice management platform for mid and large enterprises, today announced it has raised $6.7 million in Series A financing, led by SignalFire, with participation from Bloomberg Beta, Hillsven Capital, and UpWest Labs. The new funding will be used to further scale the business, which is already growing 20 percent each month. There are more than 24 billion invoices processed per year for mid and large sized enterprises. Invoicing i.