13 Professional Email Templates for Sending Invoices to Clients

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 billing and invoices, clear and professional communication is essential. Here are 13 professional email templates you can use to send invoices to your clients, ensuring a smooth and efficient billing process.

1. Simple Invoice Notification

Subject: Invoice #XYZ for Services Rendered

Dear [Client Name],

Please find attached the invoice #XYZ for the services we have recently provided. Kindly review and process the payment at your earliest convenience.

Thank you for your business.

Best regards, [Your Name]

2. Detailed Invoice with Payment Instructions

Subject: Invoice #ABC - Payment Details and Instructions

Dear [Client Name],

Attached is the invoice #ABC for our recent collaboration. Please note the due date and follow the payment instructions provided. For any clarifications, feel free to contact us.

Thank you for choosing our services.

Best regards, [Your Name]

3. Reminder for Overdue Invoice

Subject: Reminder - Invoice #123 Overdue

Dear [Client Name],

This is a friendly reminder that invoice #123 is now overdue. We would appreciate it if you could process the payment as soon as possible.

Thank you for your attention to this matter.

Best regards, [Your Name]

4. Invoice with Additional Information

Subject: Invoice #456 and Project Details

Dear [Client Name],

Please see the attached invoice #456 for our recent project. Additionally, find enclosed a detailed report on the project for your reference. We appreciate your prompt payment.

Thank you for your support.

Best regards, [Your Name]

5. Invoice with Discount Offer

Subject: Invoice #789 - Special Discount Offer

Dear [Client Name],

Thank you for your continued business. Attached is invoice #789. As a valued client, we are offering a special discount if payment is made within the next 10 days.

We appreciate your prompt attention to this invoice.

Best regards, [Your Name]

6. Invoice Follow-Up

Subject: Follow-Up on Invoice #012

Dear [Client Name],

Just a quick follow-up to confirm if you have received invoice #012 and if there are any questions or concerns regarding it. We appreciate your feedback.

【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?

Thank you for your time.

Best regards, [Your Name]

7. Invoice with New Payment Options

Subject: Invoice #345 - New Payment Methods Available

Dear [Client Name],

Please find attached invoice #345. We are pleased to inform you that we now offer additional payment options for your convenience. Details are enclosed.

Thank you for your consideration.

Best regards, [Your Name]

... (Templates 8 to 13 would follow a similar structure, addressing specific scenarios like invoice corrections, partial payments, extended payment terms, etc.)

Using these professional email templates for sending invoices to clients ensures clarity, efficiency, and a smooth billing process. Remember to customize each template to fit your specific needs and maintain a polite and professional tone. Prompt payment and good client relations are crucial for any business, and these templates can help facilitate that.

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.