Client Out of Office: Unpaid Invoice Follow-Up Email Templates

An out-of-office reply is not a refusal to pay. It is a pause. Your job is to find someone who can act while they are gone, or to put a clear follow-up on the calendar for their return date. Do not keep pinging the same inbox every other day while the auto-reply is still running.

When you get an OOO reply

• Read the auto-reply for a return date and any backup contact or accounts-payable alias.
• If a backup is named, forward the invoice once with a short note; do not escalate the tone.
• Log the return date in your tracker and schedule your next send for that day plus one business day.
• If there is no return date and no backup, send one polite note asking who covers payments while they are away.

When they are back

• Restart with a short, friendly reminder that references the original due date and the OOO gap.
• Do not stack every past reminder into one angry email; pick up as if the clock paused.
• If the invoice is now much further past due because of the trip, you can move one step firmer, but lead with the facts.

Free template 1: Ask for a backup contact

Replace every [bracket] before sending.

Hi [Client Name],

I received your out-of-office note. Invoice [Invoice #] for [Amount] was due on [Due Date] and is still unpaid.

Is there someone on your team (or an accounts payable address) I should send it to while you are away?

Thank you,
[Your Name]

Free template 2: Forward to backup / AP

Replace every [bracket] before sending.

Hi [Backup Name],

[Client Name] is out of office. I am following up on invoice [Invoice #] for [Amount], originally due [Due Date].

Invoice attached. Payment link: [Payment Link].

Could you confirm whether this can be processed, or who should handle it?

Thanks,
[Your Name]

Free template 3: Welcome-back reminder

Replace every [bracket] before sending.

Hi [Client Name],

Welcome back. While you were out, invoice [Invoice #] for [Amount] (due [Due Date]) stayed unpaid.

I have attached it again. You can pay here: [Payment Link].

Could you let me know the date it is scheduled to be paid?

Thanks,
[Your Name]

Free sample: try one email from the full pack before you buy.

Free mini-pack: 3 more follow-up templates (HTML + PDF), no signup.

Related guides

• Invoice reminder before holidays
• Invoice overdue after holidays
• Client changed point of contact
• Email accounts payable
• Friendly payment reminder after due date

Not legal advice. These are practical communication templates for freelancers and small service businesses. For disputed or large debts, talk to a lawyer in your jurisdiction.