//Method: POST
//Enctype: application/x-www-form-urlencoded
//Parametes: receiver, text, token, status=0

* receiver: 
  - /o/null: [Text] will be dropped off.
  - /o/console: [Text] will show on server-console.
  - /o/cache: [Text] will not be saved.
  - /o/uid/{uid}@omuen.com: [Text] will send to user.
  - /o/robot/{uid}: [Text] will send to [robot].
* status: 
  - 0: [Text] will be saved.
  - 1: [Text] will not be saved.