Can the municipal party Committee supervision form be sent by WeChat?

The municipal party Committee supervision form cannot be sent by wechat. The official letter is a written paper document, which is confidential and cannot be posted on WeChat. Three-color supervision list system, that is, according to the degree of implementation of supervision matters, the supervision list is printed with "blue, yellow and red" three-color paper respectively. You can't use SMS and WeChat to supervise at the same time.