Invoice Email Template: 5 Examples You Can Copy

An invoice email template is a short, ready to use message you send with your invoice attached. A good one includes a clear subject line with the invoice number, the amount due, the due date, how to pay and a polite thank you. Keep it to a few lines so your client can see what to do in seconds.

Why the email matters as much as the invoice

Your invoice holds the details, but the email is what your client reads first. If the email is vague, it can sit unopened in an inbox or get forwarded to the wrong person. A clear email gets your invoice to the right desk and makes paying feel easy.

A few things a good invoice email does for you:

• It tells the client exactly what they owe and by when, without opening the attachment.
• It gives accounts teams the invoice number they need to match the payment.
• It sets a friendly, professional tone, which helps if you later need to send a reminder.
• It creates a dated record that you sent the invoice.

What to include in an invoice email

Element	Why it matters	Example
Subject line	Gets the email opened and makes it easy to search for later	Invoice #1042 from Green Studio, due 20 March 2026
Greeting	Personal and polite	Hi Sarah,
Invoice number	Lets accounts match the payment	Invoice #1042
Amount due	The client knows the figure at a glance	$1,250.00
Due date	A real date, not only "Net 14"	20 March 2026
What it covers	Reminds them what the work was	Website copy for the spring campaign
How to pay	Removes the main excuse for delay	Bank details are on the invoice
Attachment	The invoice itself, as a PDF	Invoice_1042_GreenStudio.pdf
Sign off	Your name and contact details	Thanks, Alex

If you are not sure what belongs on the invoice itself, read what to include on an invoice.

Standard invoice email template

This is the template most freelancers and small businesses can use for everyday invoices. Copy it and swap in your details.

Short invoice email for regular clients

When you invoice the same client every month, a long email is not needed. A short version works well and still covers the essentials.

Invoice email for a new client

With a first invoice, it helps to be a little more detailed. The client may not know your process yet, and their accounts team may need extra information.

Invoice email for a deposit or upfront payment

If you ask for part of the fee before you start, make it clear that work begins once the deposit arrives. You can read more in our guide to the deposit invoice.

How to write a good invoice email subject line

The subject line decides whether your email is opened today or next week. Aim for something a busy person can understand in one glance.

1. Start with the word "Invoice" so it is easy to spot and search.
2. Add the invoice number.
3. Add your business name if the client works with many suppliers.
4. Add the amount or the due date, or both if it still reads cleanly.

Some examples that work:

• Invoice #1042 from Green Studio
• Invoice #1042, $1,250.00 due 20 March 2026
• March invoice from Priya Shah Design

Avoid vague subjects such as "Hi" or "Document attached". They are easy to miss and can look like spam.

Tips for sending invoice emails

• Send a PDF, not an editable file. A PDF looks the same on every device and is harder to change by accident.
• Name the file clearly. Something like Invoice_1042_GreenStudio.pdf is easier to find than scan001.pdf.
• Send it to the right person. Ask early who handles payments. Many businesses have a separate accounts email address.
• Send it promptly. Invoice as soon as the work is delivered while the value is fresh in the client's mind.
• Keep the tone friendly. Your first email is not the place for warnings about late fees. Those belong in your terms.
• Write the real due date. "Net 30" is clear to you, but a date such as 20 March 2026 removes any doubt. See invoice payment terms for the common options.

How to create the invoice to attach

Before you can send the email, you need a clean invoice PDF. The free InvoiceGeneratorKit invoice generator lets you add your logo, client details, line items, tax and discounts, then download a vector PDF ready to attach. There is no sign up needed, invoice numbers are added automatically, and you can mark each invoice as paid in History once the money arrives.

InvoiceGeneratorKit does not send emails for you, so you download the PDF and attach it in your own email app, using one of the templates above. For a full walkthrough, read how to send an invoice.

What to do if the client does not pay

Even with a perfect email, some invoices slip. Send a polite reminder a few days before the due date and another the day after it passes. Keep it short, restate the invoice number, amount and due date, and attach the invoice again. Our guide to the payment reminder email has wording you can copy, and how to chase an unpaid invoice covers the next steps if reminders do not work.

Frequently asked questions

What should I write in an email when sending an invoice?

Include a greeting, the invoice number, the amount due, the due date, how to pay and a short thank you. Attach the invoice as a PDF.

What is a good subject line for an invoice email?

Start with the word Invoice, then add the invoice number and either the amount or the due date, for example: Invoice #1042, $1,250.00 due 20 March 2026.

Should I attach the invoice as a PDF?

Yes. A PDF keeps your layout the same on every device and is harder to edit by accident than a Word or spreadsheet file.

Can InvoiceGeneratorKit email my invoice for me?

No. InvoiceGeneratorKit creates the invoice and lets you download it as a PDF for free. You then attach it to an email from your own inbox.