- Invoice
- Please find enclosed invoice no. … for …
- Thank you for your order.
- We look forward to doing business with you again.
- Reminder
- According to our records, we have not yet received a remittance for above invoice.
- May we remind you that your payment is overdue for three months.
- This is to remind you that above invoice is still unpaid.
- We would appreciate if you cleared your account within the next days.
- Please send your payment promptly.
- If you have already sent your payment, please disregard this letter.
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