ModulesGarden SMS Center For WHMCS Nulled has been designed to let you send text messages to both your clients and staff members right from within your WHMCS. The module features support for over 70 SMS gateways, including the world’s favorite Twilio, Clickatell and FastSMS. With it, you will be allowed to verify new customers and orders, as well as establish two-factor authentication to access your system.