Referral Source the lead generation program that connects consumers to pros through the FM Flow software. Track all estimates and jobs, start to finish. Receive notification updates, view work orders, upload files, and sign off on jobs—all in the palm of your hand. Emails and invoices are sent automatically to the customer through our streamlined technology. Never worry if the right information is reaching your customer. Rest assured knowing each update as the job progresses is automated and sent to their email, along with invoices, allowing customers to make payments through a secured portal—giving your business money in hand right away.