How do I test my integration with the Payflow Gateway?
You'll find complete information on testing then launching your Payflow Gateway integration on the PayPal Developer Portal.
Where can I find SSL certificates for Payflow Pro and Pilot API servers?
How do I create a Sandbox account for Payflow Pro (US, AU) or Website Payments Pro Payflow Edition (UK)?
How do I implement PayPal's Payflow Pro and Website Payments Pro Payflow Edition HTTPS interface?