automatic invoice notification to customers in peoplesoft

some of the AR team members were saying that they have to manually email and notify customers that invoices (that are generated out of PS) are ready and available. I know on the AP side we have a remittance email contact(s) that is notified about upcoming payments (pushed when the ACK files load into PS). I was wondering if there is a similar functionality on the AR side that we might be able to implement to eliminate this manual process? Our system details: FSCM with PUM 36