Fortnox integration
Invoices next to the ticket. Not in another tab.
When a customer gets in touch about an invoice, you instantly see what is paid, what is unpaid and what is overdue – straight from your own Fortnox. Answer correctly the first time.
Try for free How to get started
- Included in every plan
- Connected with Fortnox's own sign-in
- Disconnect whenever you like
In short
What does the Fortnox integration in Blixtflow do?
The Fortnox integration connects your Fortnox account to Blixtflow, the customer service platform from Blixtgo Agency AB. Every ticket shows the customer's Fortnox record, recent and unpaid invoices with status, the unpaid and overdue amounts and the invoice PDF. Agents can insert invoice details into a reply, create a new customer and create a draft invoice – which you then review and send in Fortnox. The integration is included at no extra cost.
Last updated October 2026
Facts about the Fortnox integration
- Price
- Included in every plan, at no extra cost
- Requirements
- A Fortnox subscription with customer invoicing and the Integration add-on
- Connected by
- An owner or admin in Blixtflow, via Fortnox's own sign-in
- Permissions
- Company information, customers and invoices
- Finds the customer
- Linked customer, email address or phone number
- Invoices
- Shown and created as drafts – nothing is booked or sent automatically
- Support
- support@blixtflow.com
What you get
Everything about the customer's invoices – without switching apps.
The right customer, automatically
Blixtflow finds the customer in Fortnox using the email address or phone number in the ticket. If it picks the wrong one, link the right customer in one click – the link is saved for next time.
Invoices and status
Recent and unpaid invoices with amount, due date and status: paid, unpaid, overdue, partly paid, draft or cancelled.
Unpaid and overdue
Two totals at the top show what the customer still owes and how much is already overdue.
Insert into the reply
Add the invoice number, amount and status to your reply in one click, and open the invoice PDF straight from the ticket.
Create a customer
New customer who isn't in Fortnox yet? Create them from the ticket with name, email and phone already filled in.
Create a draft invoice
Create a draft invoice with rows, quantity and price. It is saved as a draft in Fortnox, and an internal note in the ticket shows who created it.
Security and permissions
Only what is needed. And you decide.
The connection uses Fortnox's own sign-in (OAuth 2.0). Blixtflow never sees your Fortnox password.
- The keys from Fortnox are stored encrypted and renewed automatically.
- Only owners and admins can connect or disconnect, and you choose whether agents may create draft invoices.
- Invoices are shown only for the customer the ticket is about.
- Data is cached for at most five minutes, encrypted, so Fortnox isn't queried more than needed.
- If you disconnect, the keys are deleted from Blixtflow immediately.
Permissions in Fortnox
- Company information
- Company name and registration number, to show which account is connected.
- Customers
- Search, view and create customers.
- Invoices
- View the customer's invoices and PDFs, and create draft invoices.
What you need
- A Blixtflow account (any plan)
- A Fortnox subscription with customer invoicing and the Integration add-on
- A Fortnox user allowed to approve integrations
- Owner or admin role in Blixtflow
Up and running in two minutes
- 1
Open Integrations
In Blixtflow: Settings → Integrations → Fortnox.
- 2
Sign in to Fortnox
Click Connect, sign in to Fortnox and approve the permissions.
- 3
Choose who may create
Decide whether agents may create draft invoices. The panel appears in every ticket right away.
Questions and answers
Common questions about the Fortnox integration
What does the Fortnox integration cost?
It is included in every Blixtflow plan at no extra cost. You need your own Fortnox subscription with customer invoicing and Fortnox’s Integration add-on.
Does Blixtflow send or book invoices?
No. Invoices are always created as drafts in Fortnox. You review, book and send them yourselves in Fortnox.
How does Blixtflow find the right customer?
First it uses a customer you have already linked to the contact, then the email address and finally the phone number. If it is the wrong customer, you can search and link the right one in one click.
What data does Blixtflow read from Fortnox?
The company name and registration number, customer details and invoices. Blixtflow does not read bookkeeping, payroll, supplier invoices or bank details.
How do we disconnect Fortnox?
Under Settings → Integrations → Fortnox, click Disconnect. The keys are deleted immediately. You can also remove the integration in Fortnox.
Who can see the invoices?
Agents with access to the ticket see the invoices for the customer the ticket is about. Only owners and admins can change the settings.
Where can we get help?
Email us at support@blixtflow.com or use the contact form.
Need help with Fortnox?
Email support@blixtflow.com or use the contact form, and we'll help you get started.
14 days free
Try it with real customers. Then decide.
Connect your email and website chat in minutes. No installation, no credit card. After 14 days, the choice is yours.
- No credit card
- No lock-in
- Nordic support