WHMCS can automatically charge your customers for renewals, removing the need to run credit card charges for renewed services manually.
Configure the PayPal Payments module. PayPal Payments processes payments, stores client PayPal® details, and enables faster checkout.
Duplicate the open-source Bank Transfer and Mail In Payment payment gateway modules and use them for creating your own custom modules.
Migrate from one payment gateway to another by activating a new module, deactivating the old module, and performing configuration steps.
Migrate from PayPal® Basic to PayPal® Checkout in WHMCS 8.8 and earlier. In WHMCS 8.9 and later, we recommend PayPal Payments.
Update the PayPal® webhook URL. If your WHMCS system URL has changed because you moved the installation, some PayPal modules require this.