Invoice email examples: 9 templates to send with the bill
2026-10-08 · 9 min read
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It's Tuesday afternoon and three jobs from last week are finished. The invoices are built in your software, the totals are right, and all that's left is hitting send. But the box above the attachment is empty, and the default message says "Please find attached your invoice." So you write something from scratch for the first one, copy it for the second, forget to change the customer's name on the third, and one of them goes out with last month's due date still in the body.
The email that carries an invoice gets less thought than almost anything else a business sends, and it has a lot to do with how fast you get paid. Below are invoice email examples for the first send, the one that goes out the day the work is done: nine templates with subject lines, plus what every one of them needs. When an invoice is already late, the overdue invoice email sequence picks up from there.
What every invoice email needs
Every invoice email should answer four questions without the customer opening the attachment: what is this for, how much is it, when is it due, and how do I pay. If any of those lives only inside the PDF, some customers will put the email aside to deal with later, and a few of those turn into overdue invoices.
| Part | What to write | Why it matters |
|---|---|---|
| Subject line | Invoice number, the job, and your business name | It gets found when they search their inbox in two weeks |
| First line | What the work was, in their words | "The kitchen drain on Oak Street" beats "Services rendered" |
| Amount and due date | Both in the body, not only in the attachment | Nobody has to open a file to know what they owe |
| Pay link | One link, near the top | Paying should take less effort than replying |
| Who to ask | A name and a direct number or email | Questions get asked instead of sitting |
Keep it short. When an invoice email reads like a letter, people skim it and miss the pay link. And skip a bare "Invoice" or "Your bill" in the subject: the one without a business name or a number is the one nobody can find later.
Invoice email examples to copy
Swap the parts in brackets for your own details. Each one works as the message your invoicing software sends, if it lets you edit the default text.
1. Standard invoice after a finished job
Subject: Invoice [#] from [Business] for [job]
Hi [Name],
Thanks for having us out on [date] for [job]. Your invoice is attached.
Amount: [amount] Due: [due date] Pay online: [pay link]
If anything on it doesn't look right, reply here or call me at [phone].
[Your name], [Business]
2. First invoice for a new customer
Subject: Your first invoice from [Business]: [#]
Hi [Name],
Thanks for choosing us for [job]. Here is your invoice for the work on [date].
Amount: [amount], due [due date]. You can pay by card or bank transfer here: [pay link]. If you'd rather pay by check, make it out to [legal business name] and mail it to [address].
Since this is our first job together, here is what to expect: [one line on your terms, for example "invoices are due 15 days from the date sent"]. I'm the person to ask about billing, at [phone] or this email.
[Your name], [Business]
Tell a new customer how you bill once, in the first invoice, and you skip that phone call on every invoice after it.
3. Deposit invoice before work starts
Subject: Deposit invoice [#] to book [job] on [start date]
Hi [Name],
To hold [start date] for [job], here is the deposit invoice for [amount], which is [percent or flat amount] of the quoted total of [total].
Pay here: [pay link]
Once it's in, I'll confirm the date and send you what to expect on the first day. The rest, [remaining amount], is invoiced [when, for example "when the job is finished"].
[Your name], [Business]
Say plainly what the deposit secures. "Pay this to hold your date" moves faster than "deposit due."
4. Progress or milestone invoice
Subject: Invoice [#]: [milestone] complete on [job]
Hi [Name],
[Milestone, for example "Rough-in is done and passed inspection on [date]"]. As agreed in the quote, this invoice covers that stage.
This invoice: [amount], due [due date] Paid so far: [amount] Left after this one: [amount]
Pay online: [pay link]
Next up is [next stage], planned for [date].
[Your name], [Business]
On a long job, the running total heads off the "wait, how much is this costing us" call.
5. Monthly retainer or recurring service
Subject: [Month] invoice from [Business]: [#]
Hi [Name],
Here is your invoice for [month]: [service, for example "monthly bookkeeping and payroll for two pay periods"].
Amount: [amount], due [due date] Pay online: [pay link]
[One line on anything different this month, or "No changes from last month."]
[Your name], [Business]
People stop reading an email that arrives every month looking the same. The line about what changed is the one they'll notice, so use it when something did.
6. Invoice for a service call or small job
Subject: Invoice [#] for today's visit at [street]
Hi [Name],
Thanks for having [tech's first name] out today for [problem]. The invoice for [amount] is attached, and you can pay here: [pay link].
If the [problem] comes back, call us at [phone] and mention invoice [#].
[Business]
Small jobs get paid fastest when the invoice lands the same day, while the customer still remembers the truck in the driveway.
7. Corrected or replacement invoice
Subject: Corrected invoice [#]: replaces the one sent [date]
Hi [Name],
The invoice I sent on [date] had [what was wrong, for example "the wrong part number and an extra $45 charge"]. Sorry about that. The corrected invoice is attached and replaces the earlier one.
New amount: [amount], due [due date] Pay online: [pay link]
Please don't pay the first one. If you already did, reply and I'll sort out the difference.
[Your name], [Business]
Say what was wrong in one line and which invoice to ignore. Two invoices with the same number and no explanation is how double payments happen.
8. Invoice that needs approval from someone else
Subject: Invoice [#] for [job] at [property or company], for approval
Hi [Name],
Attached is the invoice for [job] at [location], completed [date]. [PO number: [#], if they gave you one.]
Amount: [amount], due [due date] Pay online: [pay link], or by [check or ACH details] if your accounts payable team prefers.
If this needs to go to someone else for approval, feel free to forward it, or send me their email and I'll send it straight to them.
[Your name], [Business]
Commercial customers and property managers often route invoices to a second person. The PO number and the offer to send it on keep it from sitting in a folder.
9. Final invoice at the end of a project
Subject: Final invoice [#] for [project]
Hi [Name],
[Project] wrapped up on [date]. This is the final invoice, covering [what's left, for example "the remaining balance after the deposit and the progress payment"].
Amount: [amount], due [due date] Pay online: [pay link]
Your warranty details are [attached or at link]. It was good working with you, and if you know anyone who needs [your service], I'd be glad to help them too.
[Your name], [Business]
The last invoice is also the last message on the job, so it can carry the warranty and a one-line referral ask, after the payment details.
When to send it
Send the invoice the same day the work is done, or the next morning at the latest. None of the templates above help if the email goes out a week after the job. If invoices pile up until Friday night because someone has to sit down and build them, that's the bottleneck to fix first, and the automate invoicing walkthrough covers it step by step.
Sending these by hand, or letting a system send them
By hand, each invoice email takes a few minutes: open the job, check the amount, paste the template, swap the brackets, attach, send. The mistakes come from the swapping: a name left over from the last customer, a due date copied from an old invoice, a pay link that points to someone else's bill.
A system does the same steps from the job record. When a job is marked done, it builds the invoice from what was quoted and what the tech logged, picks the right template (deposit, progress, final, recurring), fills in the name, amount, due date and pay link, and sends it. Then it watches for payment: a receipt if the money lands, the reminder sequence on your schedule if it doesn't. Most invoicing software already handles the sending; the part I build is the connection from "job marked done" to "invoice out the door," and the logic that picks which email goes to which customer.
What stays with you
Some invoices should never go out on their own. A job that ran well over the quote needs a phone call before the bill arrives, so the customer hears why from you. A customer you have a dispute with, a long-time client going through a hard stretch, or a first invoice to a big commercial account all deserve a person reading the email before it sends. A good setup holds those for review and sends the routine ones.
You also decide the terms: how many days to pay, whether you take deposits, what happens when a check bounces. The system just follows whatever terms you set.
Getting this set up
If invoices at your business go out late because someone has to build and send each one, I can connect your job records to your invoicing so the right email goes out the day the work is done, with your wording. I set this up for service businesses across Illinois, and you can see the kinds of work I do on the business automation page. Or start with the free 20 minute process audit, and we'll look at where your billing stalls.