Dear *|FIRST_NAME|*,


This email is a friendly reminder that payment for [invoice #] is due today. Our systems show that the funds have not yet landed in our account.


If you have not yet sent payment, please refer to the invoice for instructions. You can find this by searching your inbox for [invoice #], which was sent on January 15, 2023.


We value your business, so if there is anything we can do to assist you, please reach out to us at [customer service phone/email]. 


Thank you for your assistance in this matter.


Kind regards,

[Your Name]

[Company Name]