I know this sounds very basic , but while working with PayPal first time I have this question in my mind . I have gone through Google searching but did not get a proper response differentiating between "PayPal IPN and notify url or return url". Any help regarding this will be appreciable.
Also if possible I need to know what is the advantages and their functional differentiation as well.
Thanks
Notify Url: The URL to which PayPal posts information about the transaction via Instant Payment Notification. Must be URL- encoded. Its an optional field have maximum 256 characters length.
Return url: The URL to which the customer's browser is returned after completing the payment; for example, a URL on your site that displays a "Thank you for your payment" page. Default: customer is taken to the PayPal website. Optional rm Return method GET or POST: the FORM METHOD used to send data to the URL specified by the return variable after payment completion.