Built for the cloud, Coupa delivers the only spend management platform that unifies business processes across all the ways employees spend money. Our consumerized financial applications digitize spending across travel and expense management, procurement, and invoicing. All surrounded by our Open Business Network that has connected to millions of suppliers worldwide. Combined with our fully unified power applications in embedded analytics, sourcing, contract management, and inventory, our spend management cloud platform delivers fast return on investment and the control, agility and visibility critical for businesses to compete.With the CoupaMessenger app you can receive approval reminder, comments, and mention notifications in Slack, and can approve or reject documents directly in Slack.Coupa is a paid service.