AI 商务邮件：催款函案例

**Subject:** Follow-Up on Outstanding Balance – 30% Mold Payment (USD 4,500) Due

Dear [Client Name],

I hope this message finds you well.

I am writing to kindly follow up on the outstanding balance of **USD 4,500**, representing the 30% final payment for the mold project (Invoice No. [Invoice Number]), which was due on [Due Date]. As of today, the payment is **5 days overdue**.

We would like to bring to your attention that the **first batch of trial samples** has been completed and is ready for shipment. However, in accordance with our agreed terms, we are unable to arrange dispatch until the outstanding balance has been settled.

We fully understand that oversights can happen, and we would greatly appreciate it if you could arrange the payment at your earliest convenience. If the payment has already been made, please kindly disregard this notice and share the remittance advice so we can confirm receipt.

Should you have any questions regarding the invoice or require any further documentation, please do not hesitate to contact us. We are happy to assist.

Thank you for your prompt attention to this matter. We value our partnership and look forward to your continued cooperation.

Best regards,

[Your Full Name]
[Job Title]
[Company Name]
[Phone Number]
[Email Address]