A payment gateway for PayPal Pro classic and PayFlow edition. A PayPal Pro merchant account, Curl support, and a server with SSL support and an SSL certificate is required (for security reasons) for this gateway to function. PayPal Pro is a gateway plugin that allows you to take credit card payments via PayPal directly on your site. The customer enters their credit card details during the checkout process, and PayPal handles the rest. This results in an extremely slick checkout process during which the user never needs to leave your site.