text: const nodemailer = require('nodemailer');
  
  let mailService = (host, port, secure, username, password) => {
      return transporter = nodemailer.createTransport({
          pool: true,
          host: host,
          port: port,
          secure: secure,
          auth: {
              user: username,
              pass: password
          }
      });
  };
  
  module.exports = mailService;