Can I enter new payees for bill pay through mobile bill pay? No, you must enter them through online account access. However, you will be able to add payees in Popmoney. Have more questions? Submit a request 0 Comments Article is closed for comments. Related articles How do I use Bill Pay in the mobile app? Are there any fees for using this service? What are my sign-on ID and password for the new mobile app? Going on Vacation? Let the 3Rivers team know. What number do I call if I have a question or problem with my online bill payer?