❗️ Important
From September 1, 2026, this process is no longer available
for customers affected by the French e-invoicing reform.
Instead, you must send your purchase order number to Brevo by
creating a ticket directly from your account
before the invoice
is issued
for it to appear on the
invoice.
To learn more, check our dedicated
article
Update your billing information for mandatory e-invoicing (France).
Adding a purchase order (PO) number to invoices can help improve financial traceability. It makes it easier to organize your transactions and track your pending and unpaid invoices.
Good to know
- You can only add a purchase order number to pending or unpaid invoices. This cannot be done for voided, adjusted, or paid invoices.
- Only the account owner or users with permissions to manage the account plan can add a purchase order number to an invoice.
Add a purchase order number to an invoice
To add a purchase order number to an invoice in Brevo:
- Go to your Invoices page:
- Standard Brevo account: click the account dropdown and select My plan > Invoices.
- New admin account: go to My plan > Billing history.
- Classic admin account: click the account dropdown and select My plan > Invoices.
- Next to an invoice with the Pending or Not paid status, click the three-dot icon and select Add PO number.
- Enter the purchase order number you want to associate with the invoice. It can contain up to 100 characters.
- Click Add PO number.
The purchase order number will now be displayed on the invoice. You can download the invoice by clicking the three-dot icon next to it and selecting Download invoice.
⏭️ What's next?
- View and download your invoices
- Receive your invoices by email
- Change your billing and bank details
- Where can I add my VAT number and is VAT charged?
🤔 Have a question?
If you have a question, feel free to contact our support team by creating a ticket from your account. If you don't have an account yet, you can contact us here.
If you’re looking for help with a project using Brevo, we can match you with the right certified Brevo Agency partner.