How to make a Delayed Chained Payment to a user whose email is not yet registered with PayPal?

Question

API

I implement in the application the function of sending deferred gifts, which can also be sent to users not registered with PayPal.
How to make a Delayed Chained Payment to a user whose email is not yet registered (not linked to an account) in PayPal?
When the user creates a gift, he should be redirected to the PayPay checkout, where he will confirm the payment. After that, the recipient of the gift, who is not yet registered with PayPal, should be notified by PayPal by email that he has been credited with the money and he must register in order to receive it.
Here is the error I get from PayPal API:
"Account Account not found. Unilateral receiver not allowed in chained payment is restricted"
Error code: 520009

Answer 1

Save all gifts with emails in the database, according to the schedule ( https://github.com/javan/whenever) , go through the records, check if the email is registered in Paypal and send gifts. You can make status gifts ("Not sent", "Sending error", "Sent") and stir up monitoring.