message to mt4/5

so this  is a  quick one  just for knowlege purposese  with telegram EA   copier they read messages from   a channel and open trade on the respective mt4/5  my question therefore  is  orther than telegram how else can we       send message  and the same is copied to open trades   on either mt4/5       with telegram you can easily send a message to a group and immediately order is opened on the recievers mt4/5   if for example you are to use a local machine