Is it possible to send money using paypal API to any paypal account (not just to API credentials owner). I know that it's possible to do that using IPN, but I need to use SOAP.
You've got two main options: use the MassPay API or try out the new Adaptive Payments API.
The Adaptive Payments option gives you a lot more control over the payment and is the future direction of the Paypal APIs, so that's where i'd start if i were you. It supports SOAP, NVP, JSON and plain XML. MassPay has both a SOAP and NVP interface.
IPNs are a totally different subject: https://www.paypal.com/ipn
This is a very old thread, but there are recent improvements to the PayPal REST API. You can specify the third party account in the payee object. See here https://devblog.paypal.com/setting-payee/
Seems like lot of things are now deprecated. You should use PayPal Payouts.
Use PayPal Payouts to send money to multiple people at the same time.
To send a payout, you need to know:
- Each recipient's email address, a domestic mobile number, or payer ID (an encrypted PayPal account number)
- Payment amount (per recipient)
- Currency code (one currency per payout)
来源：https://stackoverflow.com/questions/1559808/how-to-send-money-to-any-paypal-account