Easy Tech TutsHow to Attach a PDF to an Invoice Emailed in QuickBooks Online Easily 2026
By Impran M N
Sometimes an invoice needs backup, like a contract, receipt, or timesheet, sent along with it. This guide shows how to attach a PDF to a QuickBooks Online invoice and make sure it's included when the bill is emailed to your client.
01Open the target invoice
Go to Sales, then Invoices, and open the specific billing document you want to attach a file to.
02Find the attachments section
Scroll to the bottom of the invoice form to locate the Attachments panel.
03Upload your PDF
Click Browse or drag and drop your PDF contract or receipt directly into the attachment area.
04Enable email delivery
Check the box labeled Attach to email next to the uploaded file so it's included when the invoice is sent.
05Send the invoice
Review the customer email and line items, then click Save and Send to deliver the invoice with the PDF attached.
Frequently asked questions
Do I have to manually enable the attachment every time I send?
You need to check the Attach to email box on each file unless you set a global default under Account and Settings.
Can I attach more than one file to an invoice?
Yes, you can drag multiple files into the attachments dock and choose which ones to include in the email.
What file types can I attach?
PDFs are the most common and reliable for invoices, though QuickBooks accepts several common document formats.
Will the attachment show up in the client's email or just the portal?
If you check Attach to email, the file is included directly in the emailed message, not just the online invoice link.
Watch the full walkthrough
The same steps, demonstrated on screen from start to finish.
