not able to sent a mail using Mean.IO

I need some help. I am new in MEAN.IO and try to sent a test mail using Mean.IO

in development.js under config/env directory

emailFrom: '@gmail.com', // sender address like ABC mailer: { service: 'sptp.gmail.com', port: "465", ssl: true, auth: { user: '', pass: '' } }

here in mailer: i additionally add this 2 lines port: "465", ssl: true, I I have tried to send mail but not succeed. I need to know,

How i can send a mail using Mean.IO

Thanks \Riyadh