A payment follow-up process sends clear reminders at set times, stops when payment arrives, and escalates only when a person must decide.
The sequence must be easy to explain and easy to stop.
A reminder should help the customer complete the payment or explain the problem.
Use consent, quiet hours, and a respectful tone. Do not use threats or claim that a payment was received when it was not verified. Keep customer-visible messages under approval control when the risk is not clear.
Use a small schedule that matches the due date. One reminder before or on the due date and one overdue reminder are a useful starting point. Review disputes by hand.
Include the job or invoice reference, amount, due date, payment link, and a way to ask a question.