Hi [Client Name],

I hope this email finds you well! I wanted to send a friendly reminder that Invoice #[INVOICE_NUMBER] for [PROJECT/SERVICE DESCRIPTION] is due on [DUE DATE] (in [X] days).

**Invoice Details:**
- Invoice Number: #[NUMBER]
- Amount Due: $[AMOUNT]
- Due Date: [DATE]
- [Link to View/Pay Invoice]

I've attached the invoice again for your convenience. If you have any questions about the invoice or need any additional documentation, please don't hesitate to reach out.

Thank you for your business! I've really enjoyed working with you on [PROJECT NAME].

Best regards,
[Your Name]
[Your Company]
[Contact Information]

Hi [Client Name],

Just a quick note that Invoice #[INVOICE_NUMBER] for $[AMOUNT] is due today, [DATE].

**Pay Online:** [ONE-CLICK PAYMENT LINK]

Or if you've already sent payment, please disregard this automated reminder.

**Invoice Summary:**
- Invoice #[NUMBER]
- Amount: $[AMOUNT]
- Due: Today, [DATE]
- [View Invoice]

If you have any questions or need to discuss payment arrangements, I'm happy to chat. Just reply to this email or call me at [PHONE].

Thanks!
[Your Name]

Hi [Client Name],

I hope you're doing well! I'm reaching out about Invoice #[INVOICE_NUMBER] for $[AMOUNT], which was due on [DUE DATE] ([X] days ago).

I know things get busy, and invoices can slip through the cracks! I wanted to check in to see if:

- You received the invoice
- There are any questions or issues with the invoice
- We need to discuss alternative payment arrangements

**Invoice Details:**
- Invoice Number: #[NUMBER]
- Amount Due: $[AMOUNT]
- Original Due Date: [DATE]
- Days Overdue: [X] days
- [Pay Now] | [View Invoice]

If you've already sent payment, thank you! Please let me know so I can mark the invoice as paid on my end.

Looking forward to hearing from you.

Best,
[Your Name]
[Contact Info]

Dear [Client Name],

I'm writing regarding Invoice #[INVOICE_NUMBER] for $[AMOUNT], which is now 14 days past due (original due date: [DATE]).

I've sent previous reminders on [DATE] and [DATE] but haven't received payment or communication about this invoice.

**Outstanding Invoice:**
- Invoice Number: #[NUMBER]
- Amount Due: $[AMOUNT]
- Due Date: [DATE]
- Days Overdue: 14 days
- [Pay Immediately]

**Please remit payment within 7 days to avoid:**
- Late payment fees ([X]% per month as outlined in our terms)
- Service interruption for ongoing projects
- Referral to collections

If there's a genuine issue preventing payment, please contact me immediately so we can work out a solution. I'm willing to discuss payment plans if needed.

I value our business relationship and hope to resolve this quickly.

Sincerely,
[Your Name]
[Title]
[Company Name]
[Phone Number]

Dear [Client Name],

This is the final notice regarding Invoice #[INVOICE_NUMBER] for $[AMOUNT], which is now 30 days past due.

**Invoice Status:**
- Invoice Number: #[NUMBER]
- Original Amount: $[AMOUNT]
- Late Fees: $[LATE_FEE_AMOUNT]
- **Total Amount Due: $[TOTAL_WITH_FEES]**
- Original Due Date: [DATE]
- Days Overdue: 30 days

**Payment Required By: [DATE - typically 10 days from final notice]**

**If payment is not received by [DATE], I will have no choice but to:**
1. Turn this account over to a collection agency
2. Report the delinquency to credit bureaus
3. Pursue legal action to recover the debt plus all collection costs and legal fees

**To avoid these actions, please:**
- Pay immediately: [PAYMENT LINK]
- OR Contact me within 48 hours to arrange payment plan: [PHONE] / [EMAIL]

I sincerely hope to resolve this without further action. If there are extenuating circumstances, please reach out immediately.

This letter serves as formal notice under [Your State] law and our contract terms dated [DATE].

Sincerely,

[Your Name]
[Title]
[Company Name]
[Address]
[Phone]
[Email]

**CC: [Accounts Receivable Department]** (if applicable)

Hi [Client Name],

I wanted to personally follow up on Invoice #[INVOICE_NUMBER] for $[AMOUNT] related to [PROJECT NAME].

Given the size of this invoice, I wanted to ensure:
- You received the invoice and all necessary documentation
- The invoice format meets your accounting requirements
- There are no questions about the billing or deliverables
- You have everything needed for timely payment processing

**Invoice Details:**
- Invoice Number: #[NUMBER]
- Amount: $[AMOUNT]
- Due Date: [DATE]
- Project: [PROJECT NAME]
- [View Invoice] | [Pay Online]

**Do you need:**
- Additional documentation? (Detailed timesheets, expense receipts, etc.)
- Different invoice format? (Purchase order number, cost center codes, etc.)
- Split payment schedule? (We can discuss terms if helpful)

I'm here to make the payment process as smooth as possible. Please don't hesitate to reach out if you need anything.

Thanks for your partnership on this project!

Best regards,
[Your Name]
[Direct Phone]

Hi [Client Name],

Thank you for reaching out about Invoice #[INVOICE_NUMBER] for $[AMOUNT].

I appreciate your transparency and understand that [REASON CLIENT GAVE - e.g., "budget cycles don't align" or "awaiting client payment"]. I'm happy to work with you on this.

**Revised Payment Terms:**
- Original Due Date: [DATE]
- New Due Date: [NEW DATE]
- Amount Due: $[AMOUNT]
- [Late fee waived / Applied after new due date]

**Please confirm:**
- You agree to the new payment date of [NEW DATE]
- Payment will be made in full on or before [NEW DATE]
- [Any conditions - e.g., "with the understanding that ongoing work will pause until payment is received"]

Just reply "Agreed" to this email to confirm, and I'll update my records.

Thank you for communicating about this. I look forward to continuing our work together.

Best,
[Your Name]