What is PayPal?
Paypal is a payment service provider (PSP) that is used in online commerce. It can be used to settle small and medium amounts when buying and selling. If you want to use Paypal as a PSP, you can find the necessary information about the registration of a Paypal account, as well as the use with the plenigo account in the guide for setting up & linking a sandbox account.
Further information about Paypal, the possibilities and conditions can be found on the PayPal website at: https://www.paypal.com/.