Cod.

gistfile1.js

var MailListener = require("mail-listener2");
var Cylon = require("cylon");
 
var mailListener = new MailListener({
  username: "[email protected]", //seu email
  password: "", //sua senha
  host: "imap.gmail.com",
  port: 993, 
  tls: true,
  tlsOptions: { rejectUnauthorized: false },
  mailbox: "INBOX", // pasta a ser monitorada
  searchFilter: "UNSEEN", // emails nao lidos
  markSeen: true, 
  fetchUnreadOnStart: true, 
  mailParserOptions: {streamAttachments: true} 
});
 
mailListener.start(); 
mailListener.on("server:connected", function(){
 console.log("imapConnected");  
});
 
mailListener.on("server:disconnected", function(){
  console.log("imapDisconnected");
});
 
mailListener.on("error", function(err){
  console.log(err);
});
 
mailListener.on("mail", function(mail){  
  var _arduino = Cylon.robot({
 
  // Sete o nome, a comunicacao e a porta.
  connection: { name: 'arduino', adaptor: 'firmata', port: 'COM4' },
  device: { name: 'led', driver: 'led', pin: 13 },
 
  work: function(my) {
   
    my.led.toggle(); 
  }
});
 
// start 
  _arduino.start();  
   console.log("emailParsed", mail);
  
});