12 Professional Outstanding Invoice Email Templates

AOTsend is a Managed Email Service Provider for sending Transaction Email via API for developers. 99% Delivery, 98% Inbox rate. $0.28 per 1000 emails. Start for free. Pay as you go. Check Top 10 Advantages of Managed Email API

When it comes to business communication, invoices play a crucial role. Sending professional and well-crafted invoice emails not only ensures timely payments but also reflects positively on your brand. Here are 12 professional and outstanding invoice email templates that you can customize to suit your business needs.

Template 1: Straightforward Invoice Reminder

Subject: Invoice Reminder for [Invoice Number]

Dear [Client Name],

This is a reminder that the invoice [Invoice Number] with a total amount of [Amount] is due on [Due Date]. Please arrange for payment at your earliest convenience to avoid any late fees.

Thank you for your prompt attention to this matter.

Best regards, [Your Name]

Template 2: Friendly Payment Reminder

Subject: Friendly Reminder for Invoice [Invoice Number] Payment

Hi [Client Name],

I hope this message finds you well. I’m writing to gently remind you that the payment for invoice [Invoice Number] is now overdue. Could you please look into this and make the payment at your earliest convenience?

Many thanks! [Your Name]

Template 3: Past Due Invoice Notice

Subject: Past Due Invoice Notice for [Invoice Number]

Dear [Client Name],

We have noticed that invoice [Invoice Number] with a balance of [Amount] is now past due. We kindly request that you settle this invoice immediately to avoid any further delay or additional charges.

Your prompt action would be highly appreciated.

Sincerely, [Your Name]

Template 4: Follow-Up on Overdue Invoice

Subject: Follow-Up on Overdue Invoice [Invoice Number]

【AOTsend Email API】：
AOTsend is a Transactional Email Service API Provider specializing in Managed Email Service. 99% Delivery, 98% Inbox Rate. $0.28 per 1000 Emails.
AOT means Always On Time for email delivery.

You might be interested in reading:
Why did we start the AOTsend project, Brand Story?
What is a Managed Email API, Any Special?
Best 25+ Email Marketing Platforms (Authority,Keywords&Traffic Comparison)
Best 24+ Email Marketing Service (Price, Pros&Cons Comparison)
Email APIs vs SMTP: How they Works, Any Difference?

Hello [Client Name],

I am writing to follow up on the overdue invoice [Invoice Number]. It’s important that we resolve this matter promptly to maintain a smooth business relationship. Please advise on the status of this payment.

Thank you for your attention to this urgent matter.

Best regards, [Your Name]

Template 5: Urgent Invoice Payment Request

Subject: Urgent Payment Request for Invoice [Invoice Number]

Dear [Client Name],

We urgently request payment for invoice [Invoice Number] which is now several days overdue. Please prioritize this payment to avoid any escalation in this matter.

We look forward to your swift response.

Sincerely, [Your Name]

Template 6: Polite Invoice Payment Reminder

Subject: Polite Reminder for Invoice [Invoice Number] Payment

Good day, [Client Name].

I am politely reminding you that the payment for invoice [Invoice Number] is now due. Your prompt payment would be much appreciated.

Thank you for your cooperation.

Best regards, [Your Name]

Template 7-12: Customizable Invoice Email Templates

For templates 7 through 12, you can customize the language and tone to fit your specific business needs and client relationships. Whether you want to adopt a more formal, informal, or personalized approach, remember to keep your messages clear, concise, and professional.

Using these professional invoice email templates as a starting point, you can craft emails that are tailored to your business communication style while ensuring that your invoices are paid promptly. Remember to always maintain a polite and professional tone, even when chasing overdue payments, to preserve the integrity and reputation of your business.

AOTsend adopts the decoupled architecture on email service design. Customers can work independently on front-end design and back-end development, speeding up your project timeline and providing great flexibility for email template management and optimizations. Check Top 10 Advantages of Managed Email API. 99% Delivery, 98% Inbox rate. $0.28 per 1000 emails. Start for free. Pay as you go.