How to Send an Invoice: Email, Live Link, and What to Check First

How to send an invoice: wait until commercial details are final, then deliver the payment request through the channel your client actually uses. How to email an invoice is the most common path—attach a PDF, share a live link, or do both.

Email a PDF when the client needs a file for accounts payable. Share a live link when you want a mobile-friendly page and open tracking. Use both when AP wants a file but you still want visibility on whether the link was opened. Before you send anything, confirm the invoice number, client, dates, total, and payment instructions are complete. Australian Government invoicing guidance describes an invoice as a document that tells the customer how much they owe, when to pay, and how to pay — those three answers should be obvious on yours.

This guide covers delivery after the invoice is ready. If you are still building the document, start with how to create a freelancer invoice.

Checklist before you send

Sending an incomplete invoice creates rework, approval delays, and disputes. Run through this list once:

• Invoice number — unique and consistent with your series (numbering guide)
• Client details — legal name, billing contact, and email that actually reaches accounts payable
• Issue date — when you issued the request
• Due date — explicit, not implied in email only
• Line items — specific descriptions, quantities, rates, and traceable totals
• Currency and tax — correct for this client and transaction
• Payment instructions — bank details, payment link, or reference the client can use
• Payment terms — plain language on the invoice itself, not buried in the thread
• Amount paid / balance due — if this is a deposit, milestone, or partial-payment invoice

Requirements vary by jurisdiction, tax registration, and client type. Treat this as an operational baseline, not legal or tax advice.

PDF email vs live link

Both deliver the same commercial request. They differ in what you can observe afterward.

Publishing is not sending. Turning on a live link makes the invoice available at a URL. It does not email the client, prove they received it, or move money. Sending is the delivery action — your email, their portal upload, or handoff to AP. A view means the live link loaded; it does not prove approval or intent to pay.

For a deeper read on what view data can and cannot tell you, see how to know if a client viewed your invoice.

What to write in the email

Keep the body short. The invoice carries the detail; the email routes it to the right person.

A practical structure:

1. Subject — include your business name, the word Invoice, the number, and the amount
   Example: Invoice INV-2041 from Studio North — $1,500 due Apr 15
2. Greeting — use the billing contact's name when you have it
3. One-line purpose — what the invoice covers and the billing period or milestone
4. Amount and due date — repeat the two numbers AP needs first
5. Delivery — PDF attached, live link, or both
6. Next step — who to contact with questions and what reference to use when paying
7. Close — polite, professional sign-off

Example email body

Hi Morgan,

Please find invoice INV-2041 for the March website maintenance retainer.

Amount due: $1,500 USD
Due date: April 15, 2026

The PDF is attached. You can also open the live invoice here: [link]

If anything needs to change before payment, reply to this email. For payment questions, contact accounts@clientco.com and reference INV-2041.

Thank you,
Alex

Avoid attaching only a PDF with no context. A bare attachment often sits unopened while the client searches for who sent it and what it is for.

A simple send workflow

1. Review

   Run the pre-send checklist on number, client, dates, and payment rails

2. Publish

   Turn on the live link if you plan to share a URL or track views

3. Send

   Email the PDF, the link, or both to the billing contact

4. Record

   Mark the invoice sent and note the send date in your records

5. Track

   Watch due date, views, and payment status — not the sent folder alone

6. Follow up

   Remind on schedule when payment is still outstanding

Australian Government guidance notes that invoices can be sent by post, email, online through accounting software, or in person — and that a consistent schedule helps clients know when to expect them. Choose a method you can retrieve later for records and audits.

After you send

Delivery is the start of collection, not the end.

1. Mark the invoice sent — update status in your tool or ledger so you do not treat a delivered invoice as still draft
2. Log the send date — useful when terms run from issue date or delivery date
3. Watch the live link — if views stay at zero after a few business days, resend or confirm the billing contact
4. Reconcile payment — match bank or processor activity to the invoice number
5. Mark paid when funds clear — add payment date and reference; do not mark paid on promise alone
6. Follow up on schedule — before due date for admin issues, after due date for overdue balances

For message templates at each stage, see unpaid invoice reminder email templates.

Common mistakes to avoid

Sending before the invoice is complete

A missing due date, wrong currency, or placeholder line item forces a correction email. That slows AP and makes you look careless. Finish the document first, then send once.

No due date on the invoice

"Please pay soon" is not a due date. Put the calendar date and terms on the invoice itself. Reminders and escalation depend on it.

Only attaching a PDF with no email context

Many clients forward invoices internally. Without a subject line, amount, due date, and invoice number in the email body, the attachment may never reach the person who pays.

Confusing publish with send

A live link that nobody received is not a delivery. Publish when you need the URL; still send the email or handoff that tells the client it exists.

Following up without checking delivery

Before a sharp reminder, confirm the invoice reached billing, the PO is on file, and no line item is disputed. The view-tracking guide helps interpret an unopened live link versus slow AP.

Marking paid before money arrives

Status should reflect cleared funds, not a client's verbal confirmation. Keep the invoice open until reconciliation.

Special cases

New clients

Confirm the billing contact, required references (PO, project code, vendor ID), and preferred format — PDF, live link, or portal upload — before the first send.

International clients

State currency, who pays transfer fees, and which payment rail to use. Send during overlapping business hours when possible so AP can act the same week.

Deposits and milestones

Send separate invoices when the agreement calls for separate billing events. Reference the project and milestone in the email so partial payments are not confused with final settlement. See the deposit invoice guide for two-invoice patterns.

Recurring work

Use a consistent send day and subject pattern so clients recognize monthly or retainer invoices. The recurring invoices guide covers schedule setup.

Frequently asked questions

How do I email an invoice?

Send it to the billing contact with a clear subject line, a short body that states the amount and due date, and either a PDF attachment, a live link, or both. Confirm the invoice is complete before you hit send.

Should I email a PDF or send a live link?

Email a PDF when the client requires a file for their process. Add a live link when you want a page that works on mobile and visibility into whether the client opened it. Many freelancers send both.

Is publishing the same as sending an invoice?

No. Publishing creates a live URL. Sending is the delivery step — email, portal, or handoff — that tells the client the invoice exists and how to pay.

What should the email subject line include?

Include your business name, the word Invoice, the invoice number, and ideally the amount or due date. AP teams search inboxes by number and vendor name.

When should I mark an invoice as sent?

Mark it sent when you have actually delivered it to the billing contact, not when you finish drafting. If you use a live link, delivery means the client received the URL or PDF, not only that the link is turned on.

How do I follow up if the client has not paid?

Confirm delivery and invoice details first. Then follow a reminder sequence based on the due date — helpful before the deadline, more direct after it. Use reminder email templates for wording at each stage.