## POST /api/v2/billing/invoices/{id}/actions/resend-email

**Resend invoice email**

Queue a resend of the invoice email for one invoice. The request body must be empty; callers cannot override the recipient here. The server resolves the current invoice recipient and billing-notification CC settings, queues delivery, and returns the selected primary `email` plus `queuedAt`. Delivery is fire-and-forget from this API: do not poll for completion.

### Related Endpoints

- `POST /api/v2/billing/invoices/{id}/actions/pay`: Pay invoice by saved card
- `POST /api/v2/billing/invoices/{id}/actions/cancel`: Cancel invoice
- `POST /api/v2/billing/invoices/{id}/actions/apply-credit`: Apply account credit to invoice

### Headers

- `Accept`: application/json
- `Authorization`: Bearer YOUR_API_KEY
- Required API scope: `write:billing`

### Parameters

- `id` (path, string, required): Public invoice ID from `GET /api/v2/billing/invoices` `data[].id` or invoice detail. Do not invent this value; use the exact ID returned by the referenced API response. Example: `inv_01hxa3b4c5d6e7f8g9h0j1k2m3`

### Request Examples

#### Resend invoice email

```bash
curl -X POST "https://cloud.hostup.se/api/v2/billing/invoices/inv_01hxa3b4c5d6e7f8g9h0j1k2m3/actions/resend-email" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json"
```

### Response Schema

- `queuedAt` (string, required): Timestamp when the email was queued. Example: `2026-04-27T12:34:56.000Z`
- `email` (string, required): Primary recipient selected by server-side invoice-email settings. Example: `billing@example.com`

### Responses

#### 200 - Invoice email resend was accepted.
```json
{
  "queuedAt": "2026-04-27T12:34:56.000Z",
  "email": "billing@example.com"
}
```

#### 400 - Invalid request. The response body is an RFC 7807 Problem Details document.
```json
{
  "type": "https://developer.hostup.se/errors/invalid_request",
  "title": "Invalid request",
  "status": 400,
  "detail": "The request body failed validation.",
  "code": "invalid_request",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z",
  "errors": [
    {
      "pointer": "/items/0/domainName",
      "detail": "`domainName` is required.",
      "code": "invalid_request"
    }
  ]
}
```

#### 401 - Unauthorized. Authentication is required.
```json
{
  "type": "https://developer.hostup.se/errors/unauthorized",
  "title": "Unauthorized",
  "status": 401,
  "detail": "Authentication is required.",
  "code": "unauthorized",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 403 - Forbidden. The caller lacks a required scope or does not own the resource.
```json
{
  "type": "https://developer.hostup.se/errors/forbidden",
  "title": "Forbidden",
  "status": 403,
  "detail": "The caller lacks a required scope or does not own the resource.",
  "code": "forbidden",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 404 - Not found. The resource does not exist or is not owned by the caller.
```json
{
  "type": "https://developer.hostup.se/errors/not_found",
  "title": "Not found",
  "status": 404,
  "detail": "The requested resource could not be found.",
  "code": "not_found",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 429 - Resend rate limit reached. Retry after the indicated delay.
```json
{
  "type": "https://developer.hostup.se/errors/rate_limited",
  "title": "Too many requests",
  "status": 429,
  "detail": "Maximum resend limit reached. Try again later.",
  "code": "rate_limited",
  "instance": "/api/v2/billing/invoices/inv_01hxa3b4c5d6e7f8g9h0j1k2m3/actions/resend-email",
  "recovery": {
    "action": "retry_after",
    "retryAfterSeconds": 86400
  }
}
```

#### 500 - Internal error. Retry later or contact support if the issue persists.
```json
{
  "type": "https://developer.hostup.se/errors/internal_error",
  "title": "Internal server error",
  "status": 500,
  "detail": "An unexpected error occurred. Retry later or contact support if the issue persists.",
  "code": "internal_error",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```