PAST-DUE INVOICE

I hope all is well. I'm reaching out to notify you that Invoice #12345, originally sent on [Date Sent], is now overdue. The total amount of [amount] was due on [Due Date].

If this has been an oversight, kindly process the payment at your earliest convenience. Remember, you can make your payment through [payment methods].

If there are any issues or concerns, please inform me. [Your Company Name] aims to ensure a clear and hassle-free payment process for all clients

Thank you for attending to this matter promptly.