# Update Email

Update the authenticated user's email address.

**Endpoint**: `PUT /api/auth/email`
**Auth**: Required
**Content-Type**: `application/json`

## Request Body

| Field | Type | Required | Description |
|--------|------|-----------|-------------|
| email | string | Yes | New email address (must be valid email format) |

### Example Request

```json
{
  "email": "newemail@example.com"
}
```

## Response (200 OK)

```json
{
  "message": "Email updated successfully"
}
```

## Error Responses

| Code | Description |
|------|-------------|
| 400 | Invalid email format |
| 401 | Invalid or expired token |
| 409 | Email already taken by another user |