Second Invoice Reminder Email: Templates for When Your First Was Ignored

Before writing your second reminder, it helps to understand why the first one was ignored. In most cases, it isn't malicious — it's one of these:

• It got buried in their inbox and they genuinely forgot
• They saw it but meant to deal with it later and then forgot
• Their accounts payable process requires approval from someone else
• They're having cash flow problems and are avoiding the conversation
• They didn't recognise the sender name or subject line and skipped it

Your second reminder needs to account for these scenarios. Keep a paper trail of every contact attempt — date, channel, and any response received. UK businesses can also charge statutory interest on late commercial payments. The follow-up schedule planner helps you plan exactly when each reminder should go out.

The timing of your second reminder depends on how overdue the invoice is when you sent the first one:

Don't wait more than 7 business days between reminders once an invoice is past due. Long gaps between follow-ups signal to the client that you're not really serious about collecting.

Use these templates as a starting point. Replace the bracketed fields with your actual details. Each template escalates slightly in tone from the previous one.

Template 1 — Friendly (5–7 days past due)

Subject: Following up — Invoice #[NUMBER] for [AMOUNT]

Hi [CLIENT NAME],

I'm following up on Invoice #[NUMBER] for [AMOUNT], which was due on [DUE DATE].
I sent a reminder on [DATE OF FIRST EMAIL] and haven't heard back yet.

I've attached the invoice again for your reference.

Could you let me know when to expect payment, or if there's anything you need
from my end to process it?

[PAYMENT DETAILS]

Thanks,
[YOUR NAME]

Template 2 — Firm (10–14 days past due)

Subject: Invoice #[NUMBER] — [X] days overdue — action required

Hi [CLIENT NAME],

Invoice #[NUMBER] for [AMOUNT] is now [X] days overdue. This is my second
follow-up, as I haven't received payment or a response to my previous messages.

Invoice details:
- Invoice #: [NUMBER]
- Amount: [AMOUNT]
- Original due date: [DUE DATE]
- Days overdue: [X]

Please arrange payment by [SPECIFIC DATE — 5 days from now] using the details below.

[PAYMENT DETAILS]

If there's a problem with the invoice or you're waiting on approval, please
let me know so we can resolve it quickly.

[YOUR NAME]

Template 3 — Pre-Final Notice (21+ days past due)

Subject: URGENT: Invoice #[NUMBER] — [AMOUNT] — 21 days overdue

Hi [CLIENT NAME],

Despite two previous reminders, Invoice #[NUMBER] for [AMOUNT] remains unpaid
and is now [X] days overdue.

If I do not receive payment by [DATE — 5 business days from now], I will
[add the agreed late fee of X% / refer this account to a collections agency /
seek recovery through small claims court] — whichever is applicable under
our agreement.

I would prefer to resolve this directly. Please contact me today to discuss
payment or to let me know if there is a dispute you'd like to address.

[PAYMENT DETAILS]

[YOUR NAME]

Need to generate customised reminder emails instantly? The free reminder email generator creates professional messages in five tones — including the exact escalation phrasing above — in seconds.

Your second reminder should feel clearly different from the first. Here's exactly what to change:

• Remove apologetic language: Delete 'sorry to bother you', 'I hope this finds you well', 'just checking in'. These phrases undercut your authority.
• Reference the first reminder explicitly: Say 'this is my second follow-up' or 'as I mentioned on [date]'. This shows the client you're keeping records and this isn't the first time you've asked.
• State days overdue clearly: Don't make them calculate it. 'This invoice is now 10 days overdue' is more urgent than 'the due date was [date]'.
• Set a specific deadline: Don't say 'please pay when you can'. Say 'please arrange payment by [specific date]'. An open-ended request invites procrastination.
• Hint at next steps: In a firm second reminder, briefly mention what happens next if payment isn't received — late fees, escalation to collections, or legal action. You don't need to be aggressive, just clear.

Two ignored reminders is a pattern, not a coincidence. Here's the escalation path:

1. 1

   Call them

   A phone call after two ignored emails almost always gets a response. Keep it professional: 'I'm calling about Invoice #[X] for [amount]. I've sent two emails and haven't heard back — can we sort this out now?'

2. 2

   Send a formal final notice email

   Shorter, colder, no pleasantries. State the amount, the days overdue, and give a 5-business-day deadline before formal action.

3. 3

   Add the contractual late fee

   If your contract or invoice included a late fee clause, start applying it now. Use the late fee calculator to calculate exactly what's owed.

4. 4

   Send a formal demand letter

   A letter on your letterhead (or from a solicitor/attorney) citing the contract, invoice number, and amount owed. This is the last step before legal action and resolves most disputes.

5. 5

   Small claims court or collections

   For amounts below your jurisdiction's threshold (typically $5,000–$15,000), small claims court is inexpensive and effective. For larger amounts, a solicitor or collections agency may be appropriate.

See the full escalation guide: 5-email sequence for overdue invoices and how to write a demand letter for an unpaid invoice.

The biggest mistake freelancers make with invoice follow-up is not keeping records. If a client later disputes that you chased the invoice, you need proof — dates, content, and responses.

A spreadsheet works, but it won't remind you when the next follow-up is due. InvoiceGrid gives you a chase history log that records every reminder against the invoice — date sent, channel, and any client response. The Today View tells you each morning which invoices need attention, so you never accidentally let a second reminder slip into a third week.

• Log every reminder with date and channel (email, phone, WhatsApp)
• Set a follow-up date for 5–7 days out when you send each reminder
• Record client responses, even if they're excuses
• Keep all invoice-related emails in a dedicated folder for quick reference