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How to Follow Up on an Unpaid Invoice

Following up on unpaid invoices is one of the most uncomfortable parts of being a freelancer or running a small business. But here's the truth: you have every right to ask for payment. You did the work, you delivered value, and now it's time to get paid.

The Golden Rules of Invoice Follow-Up

  • Be specific — always include invoice number, amount, and due date
  • Be direct — "please pay by Friday" is clearer than "when you get a chance"
  • Make it easy — include a payment link or clear payment instructions
  • Escalate gradually — start friendly, get firmer with each reminder

When to Send Follow-Up Emails

Timing Tone Expected Response
Due today Friendly heads-up 60%+ response rate
3-5 days overdue Polite reminder 40-50% response rate
7-10 days overdue Firm follow-up 25-35% response rate
14+ days overdue Final notice 10-20% response rate
30+ days overdue Escalation warning 5-10% response rate

What to Include in Your Email

Every effective invoice follow-up email should include:

  • Invoice number for easy reference
  • Exact amount owed (with currency symbol)
  • Original due date and days overdue
  • Clear call-to-action — pay now, reply by X date, etc.
  • Payment link or instructions (reduce friction)

Common Mistakes to Avoid

  • Being too apologetic — you earned this money, don't sound guilty
  • Vague requests — "please pay soon" vs "please pay by Friday"
  • No clear consequence — what happens if they don't pay?
  • Waiting too long — the longer you wait, the harder it gets
  • Skipping steps — friendly → firm → final notice → action

Need More Help?

If you're dealing with chronic non-payers, check out our Invoice Recovery Toolkit ($9) — it includes 10 professional email templates, legal demand letters, phone scripts, and a complete escalation guide.

For SaaS founders using Stripe, RecoverKit automates failed payment recovery with smart D+1/D+3/D+7 email sequences. Free 14-day trial.