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# Send a customer invoice

> Email a customer invoice to the customer or to the addresses you give. Input schema, a tools/call example and an example result.

Source: https://cotlet.dev/docs/mcp/pennylane/send_customer_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)

Email a customer invoice to the customer or to the addresses you give.

Pennylane MCP tools: https://cotlet.dev/docs/mcp/pennylane.md

MCP tool: `pennylane_write → send_customer_invoice`

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

Emails the invoice PDF. Without recipients it goes to the email on the customer. If the customer has none, the call fails and asks for one. Pennylane generates the PDF first, which can take a few minutes, so a call made right after creation can fail with a conflict; try again later. CC and BCC are not available, and the email uses Pennylane's default invoice template in French or English by the customer's billing language. The email reaches your customer. By default you confirm each call; you can switch that off for this tool.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `invoice_id` | integer | yes | Invoice ID from list_customer_invoices or create_customer_invoice. |
| `recipients` | array | no | Email addresses to send to. Default: the email on the customer. |

## tools/call

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "pennylane_write",
    "arguments": {
      "operation": "send_customer_invoice",
      "arguments": {
        "invoice_id": 1
      }
    }
  }
}
```

## Example response

```json
{
  "content": [
    {
      "type": "text",
      "text": "{ ... same JSON as structuredContent ... }"
    }
  ],
  "structuredContent": {
    "invoice_id": 118390,
    "invoice_number": "F-2026-0151",
    "sent": true,
    "recipients": [
      "compta@atelier-lumen.example"
    ]
  },
  "isError": false
}
```

Previous: [Finalize a customer invoice](https://cotlet.dev/docs/mcp/pennylane/finalize_customer_invoice.md)
Next: [Import a supplier invoice](https://cotlet.dev/docs/mcp/pennylane/import_supplier_invoice.md)

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## 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.