[…] Also in September, payment-as-a-Service provider UNIPaaS launched a small-business-focused invoice payments partnership with American Express. In terms of the mechanics of the deal, small- to medium-sized businesses (SMBs) can give customers the option of paying invoices with American Express cards through the UNIPaaS platform, speeding up business invoice payments. UNIPaas serves SaaS firms that have presence in HealthTech, accounting, education and mobility. …