FOLLOW-UP INVOICE

I trust you're doing well. I wanted to offer a friendly reminder regarding [invoice number], which was sent to you on [Date Sent]. The payment deadline is approaching on [Due Date], and the total outstanding amount is [amount due].

You can process your payment using [payment methods].

If you encounter any issues or have questions, please let me know how I can help.

Thanks in advance for ensuring this matter is settled promptly.