Writing an invoice email can feel awkward. You want to look professional, maintain a great relationship with your client, but also be direct about getting paid.
Many business owners overcomplicate this step. They write long, winding messages or send vague subject lines that get buried in a busy inbox. This creates a silent revenue leak—not because the client doesn’t want to pay, but because the email makes the process tedious.
To get paid faster, your invoice emails need to be clear, concise, and completely focused on reducing payment friction.
Here are 5 professional invoice email templates designed to turn “billing” into “realized revenue.”
1. The Standard Project Invoice Template
Best for one-off projects, completed milestones, or standard business deliverables.
Subject: Invoice [Invoice Number] from [Your Company Name]
Body: Hi [Client Name],
I hope you’re having a productive week.
The work for [Project Name] is officially complete, and I have attached the itemized PDF invoice ([Invoice Number]) to this email for your records.
Invoice Total: [Amount]
Due Date: [Date]
To make this as easy as possible, you can pay instantly via credit card or bank transfer here: [Insert Your Doran Pay Link]
Please let me know if you have any questions. Thank you for your business!
Best regards,
[Your Name]
[Your Company Name]
2. The Recurring Retainer Template
Best for monthly retainers, ongoing consulting, or subscription-based services.
Subject: New Invoice [Invoice Number] for [Month] Services – [Your Company Name]
Body: Hi [Client Name],
I hope you’re well!
As we head into the next billing cycle, here is the invoice for our ongoing [Marketing/Consulting/Software] services for the month of [Month].
Amount Due: [Amount]
Due Date: [Date]
You can quickly process this secure transaction with one click using our payment portal: [Insert Your Doran Pay Link]
As always, the full breakdown is attached below. Thanks for your continued partnership!
Cheers,
[Your Name]
[Your Company Name]
3. The Casual/Creative Freelancer Template
Best for creative professionals who have a close, conversational relationship with their clients.
Subject: Invoice [Invoice Number] for [Project Name] – [Your Name]
Body: Hi [Client Name],
It’s been great working together on [Project Name]! I’m thrilled with how the final deliverables turned out.
I’ve attached the official invoice here for [Amount]. It’s set with a due date of [Date].
When you have a moment, you can clear this balance directly from your phone or desktop right here: [Insert Your Doran Pay Link]
Let me know when you’re ready to kick off the next project!
Best,
[Your Name]
4. The Friendly Reminder (1-3 Days Past Due)
Best for a polite nudge right after a deadline passes. Keep it soft but actionable.
Subject: Friendly Follow-up: Invoice [Invoice Number] – [Your Company Name]
Body: Hi [Client Name],
I’m checking in to ensure you received the invoice for [Project Name] sent last week. We know how busy things get, so I wanted to send a quick reminder that payment is now slightly past due.
Total Balance: [Amount]
You can easily settle this open balance using our secure, frictionless payment link: [Insert Your Doran Pay Link]
If payment has already been sent, please disregard this note. Let me know if you need any adjustments on our end.
Sincerely,
[Your Name]
[Your Company Name]
5. The Firm Overdue Notice (7+ Days Past Due)
Best for when an invoice is significantly late. This copy cuts out the fluff and focuses entirely on the transaction.
Subject: OVERDUE: Invoice [Invoice Number] from [Your Company Name]
Body: Hi [Client Name],
This email is a formal notice that Invoice [Invoice Number] for [Service/Product] is now [Number] days overdue.
Outstanding Amount: [Amount]
Original Due Date: [Date]
To avoid any disruption to your services or late fees, please resolve this balance immediately via our online checkout:
[Insert Your Doran Pay Link]
The original invoice is re-attached to this email for your convenience. We look forward to your prompt response.
Regards,
[Your Name]
[Your Company Name]
6. Invoice Email With Invoice Attached
Subject: Invoice #[Invoice Number] – [Your Business Name]
Hi [Client Name],
Please find attached invoice #[Invoice Number] for [service/project].
Amount due: [Amount]
Due date: [Due Date]
You can review the attached invoice and complete the payment using the payment details provided.
Please let me know if you have any questions.
Best,
[Your Name]
7. First Invoice Email to a New Client
Subject: Your First Invoice from [Business Name]
Hi [Client Name],
Thank you for working with us.
I’ve attached invoice #[Invoice Number] for [service/project]. The total amount due is [Amount], with payment due by [Due Date].
If you have any questions about the invoice or payment process, feel free to contact me.
Best regards,
[Your Name]
8. Deposit Invoice Email
Subject: Deposit Invoice for [Project Name]
Hi [Client Name],
As discussed, here is the deposit invoice for [Project Name].
Deposit amount: [Amount]
Invoice number: #[Invoice Number]
Due date: [Due Date]
Once the deposit is received, we can proceed with the next stage of the project.
Thank you,
[Your Name]
9. Final Invoice Email
Subject: Final Invoice for [Project Name]
Hi [Client Name],
It was a pleasure working with you on [Project Name].
Please find the final invoice attached.
Invoice: #[Invoice Number]
Amount due: [Amount]
Due date: [Due Date]
Thank you again for choosing [Business Name].
Best,
[Your Name]
10. Recurring Invoice Email
Subject: Monthly Invoice #[Invoice Number] – [Month]
Hi [Client Name],
Your invoice for [Month] is ready.
Amount: [Amount]
Due date: [Due Date]
You can review the invoice and complete your payment using the payment option included.
Thank you for your continued business.
Best regards,
[Your Name]
11. Friendly Invoice Payment Reminder
Subject: Friendly Reminder – Invoice #[Invoice Number]
Hi [Client Name],
Just a quick reminder that invoice #[Invoice Number] for [Amount] is due on [Due Date].
If you’ve already completed the payment, please disregard this message.
Otherwise, you can use the payment information included in the invoice.
Thank you,
[Your Name]
12. Overdue Invoice Email
Subject: Overdue Invoice #[Invoice Number]
Hi [Client Name],
I’m following up regarding invoice #[Invoice Number], which was due on [Due Date].
The outstanding balance is [Amount].
Could you please let me know when we can expect the payment?
If the payment has already been sent, please disregard this email.
Best regards,
[Your Name]
13. Partial Payment Invoice Email
Subject: Remaining Balance for Invoice #[Invoice Number]
Hi [Client Name],
Thank you for your recent payment of [Paid Amount] toward invoice #[Invoice Number].
The remaining balance is [Remaining Amount], due by [Due Date].
You can use the same payment details provided in the original invoice.
Thank you,
[Your Name]
14. Follow-Up After Sending an Invoice
Subject: Follow-Up on Invoice #[Invoice Number]
Hi [Client Name],
I’m following up to make sure you received invoice #[Invoice Number] that I sent on [Date].
The invoice total is [Amount] and is due on [Due Date].
Please let me know if you need me to resend the invoice or provide any additional information.
Best,
[Your Name]
15. Short Invoice Message to a Client
Subject: Invoice #[Invoice Number]
Hi [Client Name],
Your invoice #[Invoice Number] for [Amount] is ready and due on [Due Date].
Please review the invoice and let me know if you have any questions.
Thank you!
[Your Name]
The Engine Behind the Template: Why a Link Trumps text
You can copy and paste the best templates in the world, but if your email forces the client to download a PDF, log into their bank portal, and manually execute a wire transfer, you are begging for a delay.
At Doran Pay, we look at invoicing through the lens of conversion optimization. An invoice email shouldn’t just be an “alert”; it should be a high-converting sales funnel for your cash flow.
By embedding a frictionless payment link directly into these templates, you enable your client to:
- Click the link from their mobile device or desktop.
- View a beautifully optimized checkout screen.
- Pay instantly with their preferred method.
No friction. No technical glitches. Just a system that works exactly the way it should to protect your business growth.
Conclusion: Stop Chasing, Start Converting
Your invoicing process reflects the quality of your brand. Don’t let a sloppy or friction-heavy billing workflow hold back your revenue.
Use these 5 templates to keep your communication professional, but leverage the power of doranpay.com to handle the heavy lifting. Let’s build a payment experience that turns outstanding invoices into immediate revenue.
