List Email Channels

{
  "items": [
    {
      "address": "string",
      "created_at": "2019-08-24T14:15:22Z",
      "display_name": "string",
      "error_message": "string",
      "id": "string",
      "is_default": false,
      "is_verified": false,
      "last_sync_at": "2019-08-24T14:15:22Z",
      "provider": "string",
      "provider_config": {},
      "sending_domain": "string",
      "signature_html": "string",
      "status": "string",
      "updated_at": "2019-08-24T14:15:22Z"
    }
  ],
  "limit": 0,
  "offset": 0,
  "total": 0
}

{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string"
    }
  ]
}