New Payment Gateways in 7.3
From WHMCS Documentation
WHMCS 7.3 introduces 2 new payment gateways:
Accept.js is Authorize.net's answer to Stripe. With Accept.js, customers card data is sent directly to the Authorize.net servers which helps to reduce PCI DSS scope. Accept.js replaces Auth.net's Direct Post Method (DPM) with a modern implementation that doesn’t require a post-back and can be used like any other payment type in the Authorize.Net API.
Learn more at Accept.js by Authorize.net
Skrill 1-Tap is a payment method that lets your customers use their Skrill account to pay with a single tap or click. It can be used to process recurring payments via the Skrill payment gateway.
Learn more at Skrill 1-Tap