Send mails from Gmail using Nodemailer

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Send mails from Gmail using Nodemailer

This is a sample script for sending e-mails from gmail using Nodemailer. In order to use this, please retrieve the folloing parameters before run this script.

1. gmail address
2. client ID
3. client Secret
4. Refresh token
   • Please include https://mail.google.com/ in the scope.
5. Enable gmail API at API console.
6. Install Nodemailer

const nodemailer = require('nodemailer');

var auth = {
    type: 'oauth2',
    user: '### your gmail address ###',
    clientId: '### client ID ###',
    clientSecret: '### client secret ###',
    refreshToken: '### refresh token ###',
};

var mailOptions = {
    from: '#####',
    to: '#####',
    subject: 'sample subject',
    text: 'sample text',
    html: '<b>sample html</b>',
};

var transporter = nodemailer.createTransport({
    service: 'gmail',
    auth: auth,
});

transporter.sendMail(mailOptions, (err, res) => {
    if (err) {
        return console.log(err);
    } else {
        console.log(JSON.stringify(res));
    }
});

Reference :

• Nodemailer
• Nodemailer OAuth2

Where do you get these values?

clientId: '### client ID ###',
clientSecret: '### client secret ###',
refreshToken: '### refresh token ###',

I got this error :(

{ Error: Invalid status code 401
    at ClientRequest.req.on.res (/Volumes/HD Daniele/Sites/hub21/server/node_modules/nodemailer/lib/fetch/index.js:221:23)
    at emitOne (events.js:115:13)
    at ClientRequest.emit (events.js:210:7)
    at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:564:21)
    at HTTPParser.parserOnHeadersComplete (_http_common.js:116:23)
    at TLSSocket.socketOnData (_http_client.js:453:20)
    at emitOne (events.js:115:13)
    at TLSSocket.emit (events.js:210:7)
    at addChunk (_stream_readable.js:252:12)
    at readableAddChunk (_stream_readable.js:239:11)
    at TLSSocket.Readable.push (_stream_readable.js:197:10)
    at TLSWrap.onread (net.js:589:20)
  type: 'FETCH',
  sourceUrl: 'https://accounts.google.com/o/oauth2/token',
  code: 'EAUTH',
  command: 'AUTH XOAUTH2' }

Hello, I get the same error with De-Lac
@De-Lac did you get any solution yet?

has anyone been able to solve this

In my environment, I could confirm that the script worked fine. I apologize I couldn't find about the reason that the script doesn't work.

If this problem still persists hope this link can help, it worked for me
https://codeburst.io/sending-an-email-using-nodemailer-gmail-7cfa0712a799

and below is my nodejs code
//POST route from contact form
app.post('/contact', (req, res)=>{

//Instantiate the SMTP server
const smtpTrans = nodemailer.createTransport({
	host: 'smtp.gmail.com',
	port: 465,
	secure: true,
	auth: {
		user: process.env.GMAIL_USER,
		pass: process.env.USER_PASS
	},
	tls: {
		// do not fail on invalid certs
		rejectUnauthorized: false
	}
})

//Specify what the email will look like
const mailOptions = {
	from: process.env.GMAIL_USER,
	to: process.env.RECEIVE_USER,
	subject: `${req.body.subject}`,
	text: `
		Name: ${req.body.names}
	 	Email:${req.body.email}
	 	Phone: ${req.body.phone}
	  	Message: ${req.body.text}
	  	`
}

//Attempt to send the mail
smtpTrans.sendMail(mailOptions, (err, res)=>{
	err?console.log(err):console.log('success')
})

})

all note you need body-parser and nodemailer npm installed and visit gmail settings to activate less secure apps to yes. Use the link above

The solution by @isaacssemugenyi works only locally but does not work when your app is in production, specifically on Heroku