Hello,

I am trying to implement a customer payment gateway which has a callback mechanism to call a pre-configured url on my side to let me know of the payment success or failure.

Using the override method for ProcessPayment I am able to redirect to the vendors payment handling pages.

The question is how do I handle the callback? Is there any other method which I can override and elegantly let the customer know of payment success (or otherwise) and perhaps a thank you note?

The Payment results guide isn't very helpful, as it doesn't discuss callback type of method at all.