I'm making a very small and simple software, which I want to sell with the Software as a Service model.
I have a lot covered, but cannot understand from the paypal page how to get information about the transaction. Once the transaction has been carried successfully, I have to create a user and send that user his login information.
Where can I find more information about how to do this? what about recomendations? do any of you recommend a different online payment service that makes this easy?