PayPal payment system
To connect the PayPal payment system, go to https://www.paypal.com/signin and authorize
Then go to Developer Dashboard switch to Live and click Create APP
Specify the application name and click Create App
In the window that appears, copy the Client ID and Secret
Copy the Client ID and Secret, go to the page Payment systems, select PayPal and in the Client ID field enter the Client ID value, and in the Secret field, respectively, Secret.
Name - The internal name in Smart Sender of this connection to the payment system is not displayed anywhere for your clients.
Return URL - the URL to which the client will be redirected after making a payment.
Cancel URL - the URL to which the client will be redirected in case of unsuccessful payment.
Service URL - if you have a Billing or CRM system, you can specify the Service URL of this system and Smart Sender will relay data from the payment system to your system without any changes, thereby not breaking the existing integration if it was.