Subject Line for Payment Plan Reminder Email
Email subject lines drive open rates for payment plan reminders. Use these proven options for follow-up emails when a scheduled installment is overdue. Templates only — not legal advice.
Generate free previewWhen to use / when to send
Checklist / what to include
- Reference to invoice #{{InvoiceNumber}} and payment plan status.
- Keep subject under 8 words, clear and factual.
- Clear ask: confirm payment date or pay now.
- Include the new payment deadline in body.
- Include pay link {{PayLink}}.
- Reply-by date in your follow-up.
- Professional, concise tone.
- No threats or emotional terms.
- Company brand/identity if possible.
- Mention the specific installment.
- Templates only disclaimer.
Copy/paste template
How to use this template
- Use subject lines that are specific and non-threatening.
- Do not change the subject line mid-thread unless escalating.
- Always include a reply-by deadline in the body.
- Pair with one direct ask per message.
- Adjust sender/contact if needed for different departments.
Recommended timing / follow-up plan
- Send on the day the installment is missed.
- Follow up after 2 days if no response.
- If still unpaid after a week, escalate to collections step.
- Always confirm in writing if schedule changes.
- Use phone/SMS for high-value plans after 5 days of silence.
Best practices / common mistakes
- Do: Use neutral, clear language.
- Do: Be consistent with subject line themes.
- Do: Include direct payment link.
- Do: Thank the client for their attention.
- Don't: Use ALL CAPS or exclamation points.
- Don't: Reset subject line for no reason.
- Don't: Omit invoice number if the client has multiple plans.
- Don't: Forget to reference your policy or agreement.
- Don't: Ignore replies proposing alternative plans.
- Don't: Reuse the same message repeatedly.