Overdue Invoice Reminder Sequence

FRIENDLY — suggested first follow-up after due date
Subject: Quick reminder: invoice [number]
Hi [Name], invoice [number] for [amount], due [date], is showing as unpaid. You can view and pay it here: [verified link]. If you've already paid, please send the payment reference so we can reconcile it. Thanks, [Name]

FOLLOW-UP — suggested seven days later if unresolved
Subject: Payment update for invoice [number]
Hi [Name], I'm following up on invoice [number] for [amount]. Could you confirm its payment status and expected payment date? If there is a question about the invoice, reply here so we can address it. Thanks, [Name]

FINAL REQUEST — timing based on your agreement and policy
Subject: Action requested: invoice [number]
Hi [Name], invoice [number] remains outstanding. Please contact us by [date] to arrange payment or discuss any discrepancy. Under [actual agreement clause, if applicable], the next step is [authorized action]. If no such clause applies, remove that sentence. Please reply so we can resolve this. [Name]

Reconcile payments before each reminder. Adjust timing to the agreement. Never add fees, threaten collections, or pause work automatically based on this sample alone.

An invoice due October 1 receives a friendly reminder October 2 after the payment ledger is checked.

Correct balance; verified link; disputed amounts reviewed; authorized next step. Related: F3 (Weekly Cash and Admin Check) and C1 (Complaint Reply with a Clear Resolution).