Intro
Following up on unpaid invoices isn’t pleasant, but it’s essential. A clear, professional follow-up email helps you get paid on time while protecting relationships and keeping cash flow steady.
TL;DR
- Always put payment terms in writing before starting work.
- Start with a polite reminder, then escalate if needed.
- Keep your tone firm but empathetic — clients often forget, not refuse.
- Use both phone and email: voice conveys tone, email provides a record.
- Automate reminders with tools like Wow Invoice to remind you have overdue invoices.
Why Follow-Up Emails Matter
For contractors and service professionals, unpaid invoices can disrupt business. Most clients don’t ignore invoices on purpose — they simply forget. A short, respectful follow-up keeps projects moving and shows you value both your work and your client.
Best Practices Before Doing a Job
- Agree in writing: Clearly outline due dates, late fees, and payment methods upfront.
- Set expectations: Make sure clients understand when and how to pay.
- Stay professional: A transparent invoicing process makes follow-ups feel natural, not confrontational.
How to Word a Follow-Up Invoice Email
A structured approach works best. Keep messages short, polite, and direct:
1. Polite First Reminder
- Subject: Friendly Reminder: Invoice [#1234] Due
- Thank them for their business.
- Reference the invoice and include the payment link.
2. Second Reminder (If Still Unpaid)
- Subject: Follow-Up on Outstanding Invoice [#1234]
- Reiterate the due date.
- Emphasize the importance of timely payment.
- Call them to make sure they got the invoice.
3. Final Reminder
- Subject: Final Notice: Invoice [#1234]
- State this is the last reminder.
- Reference agreed terms and outline next steps (e.g., late fees, paused service).
- Reference that you have a business to run, and incurred expenses to deliver their project (if accurate).
You are running a business. They understand that — it’s not rude to remind them.
Mistakes to Avoid
- Skipping follow-ups: Silence often leads to further delay.
- Vague language: Always include invoice date, due date, and payment details.
- Being too nice: Firm but respectful shows you respect yourself and earns future business and referrals.
- Only calling: Calls convey tone, but without email you lose the written record.
Why Use Both Phone and Email
A call allows you to express empathy and seriousness. An email documents the reminder. Together, they balance professionalism with accountability.
Key Takeaways
- Clear agreements make reminders easier.
- Start with a kind tone, escalate only when needed.
- Keep written records for every step.
- Automate follow-ups to save time and stress.