IPN

An IPN, or Instant Payment Notification, is a system used by online payment services like PayPal to automatically inform a website or business when a transaction is completed. When you make a purchase, the payment platform sends a real-time message to the seller’s website with details of the payment, such as amount and status. This helps the seller verify that payment has been received without manual checks, enabling immediate processing of orders or services. IPNs streamline online transactions by providing timely, automatic updates, ensuring both parties are informed and transactions are securely confirmed.