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# Send invoice

> Send a booked invoice to the customer by email, e-invoice or print service. Inputs, cURL, Python and Node.js examples and an example response.

Source: https://cotlet.dev/docs/api/fortnox/send_invoice

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

Send a booked invoice to the customer by email, e-invoice or print service.

Fortnox API: https://cotlet.dev/docs/api/fortnox.md

`POST https://cotlet.dev/api/v1/fortnox/invoices/{invoice_number}`

Access: write. Confirm: waits for the user's OK before it runs.

Sends a booked invoice to the customer, as the Skicka button does, and marks it as sent. Methods are email, e_invoice and print_service; e-invoice only works when it has been activated in the Fortnox invoicing settings. Failed deliveries, for example an invalid email address, show up in Fortnox under the Misslyckade filter and in the next list_invoices call. By default you confirm each call; you can switch that off for this tool.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `invoice_number` | string | yes | Invoice number from list_invoices or create_invoice. |
| `method` | enum | no | email, e_invoice or print_service. Default: the delivery method set on the customer. |

## Request

**cURL**

```bash
curl -X POST https://cotlet.dev/api/v1/fortnox/invoices/invoice%20number \
  -H "Authorization: Bearer $COTLET_API_KEY"
```

**Python**

```python
result = client.call("fortnox", "send_invoice", {"invoice_number":"invoice number"})
```

**Node.js**

```js
const result = await cotlet.call('fortnox', 'send_invoice', {"invoice_number":"invoice number"});
```

**CLI**

```bash
cotlet call fortnox send_invoice --data '{"invoice_number":"invoice number"}'
```

## Example response

```json
{
  "invoice_number": "2381",
  "method": "email",
  "to": "ekonomi@nordlys.example",
  "sent": true
}
```

Previous: [Bookkeep invoice](https://cotlet.dev/docs/api/fortnox/bookkeep_invoice.md)
Next: [Register payment](https://cotlet.dev/docs/api/fortnox/register_payment.md)

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Cotlet is an independent service. It is not affiliated with, endorsed by or sponsored by any of the products listed on this site. Product names are trademarks of their respective owners.

## For AI agents: sign your user up

Is your user asking you to sign them up for Cotlet? You can do it for them, no account or key needed.

1. Read the fields and their allowed values: GET https://cotlet.dev/api/v1/access-requests
2. Ask the user for each value: email, apps, what you will do with them. If they leave the password to you, generate a strong one and show it to them.
3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

One call creates the account and sends the access request; we email the user when access is granted.