You can easily migrate your WHMCS installation's data storage between locations.
Migrate from PayPal® Basic to PayPal® Checkout in WHMCS 8.8 and earlier. In WHMCS 8.9 and later, we recommend PayPal Payments.
Move an existing service from one client to another. WHMCS includes an easy option to change a service's owner in the client profile.
Configure free trials for your products in WHMCS. Free trial accounts automatically terminate a set number of days after ordering.
Before you update your WHMCS installation, we recommend several preparatory steps.
After you enable two-factor authentication (2FA), you can require users and admins to configure it the next time that they log in to WHMCS.
Offer clients the choice to opt in or out of your marketing email list during checkout or in their account details in the Client Area.