I am setting up a subscription system in my website. It is monthly subscription system and I am using Paypal Express checkout for it.
My question is will Paypal send IPN notification to the notify_url every month when the user's account is charged, or only when the first payment is made ?
PayPal will send notifications every month to your IPN Listener that should be specified and enabled in Profile > My Selling Tools > Instant payment notifications
Every recurring payment notification will contain txn_type=subscr_payment