nodemailer and gmail APIs - node.js

Question

Im trying to get nodemailer working using Google GMail API.
I've got my Google project set up - using their oauth sandbox for redirect,
I've got a clientID, secret and refresh token from my developers console.
The Code
const nodemailer = require('nodemailer');
const xoauth2 = require('xoauth2');
// create reusable transporter
let transporter = nodemailer.createTransport( {
service: 'gmail',
xoauth2: xoauth2.createXOAuth2Generator({
user: 'me#myDomain.com',
clientid: 'blahblahblah.apps.googleusercontent.com',
clientSecret: 'k33p-gUeSsINg',
refreshToken: '123BritneyIsTheBest'
}),
tls: {
rejectUnauthorized: false
}
} );
// setup email data
let mailOptions = {
from: 'me#myDomain.com',
to: 'me#yahoo.com',
subject: 'Hello there Google API...',
text: 'Hello Google API',
html: '<b>Hello Google API</b>'
};
// send mail with defined transport object
transporter.sendMail(mailOptions, (error, info) => {
if (error) {
return console.log(error);
}
console.log('Message sent: ', info.messageId);
});
The Error.
{
Error: Mail command failed: 530-5.5.1 Authentication Required. Learn more at 530 5.5.1 https://support.google.com/mail/?p=WantAuthError l24sm4075119ywk.21 - gsmtp
at SMTPConnection._formatError (C:\abc\index.js:591:19)
at SMTPConnection._actionMAIL (C:\abc\index.js:1350:34)
at SMTPConnection._responseActions.push.str (C:\abc\index.js:840:18)
at SMTPConnection._processResponse (C:\abc\index.js:747:20)
at SMTPConnection._onData (C:\abc\index.js:543:14)
at TLSSocket._socket.on.chunk (C:\abc\index.js:495:47)
at emitOne (events.js:116:13)
at TLSSocket.emit (events.js:211:7)
at addChunk (_stream_readable.js:263:12)
at readableAddChunk (_stream_readable.js:250:11)
code: 'EENVELOPE',
response: '530-5.5.1 Authentication Required. Learn more at\n530 5.5.1 https://support.google.com/mail/?p=WantAuthError l24sm4075119ywk.21 - gsmtp',
responseCode: 530,
command: 'MAIL FROM'
}
I have tried this - and it works, but it's my understanding that this is very unsecured and NOT acceptable for production.
const nodemailer = require('nodemailer');
// create reusable transporter object
let transporter = nodemailer.createTransport( {
host: 'smtp.gmail.com',
port: 587,
secure: false,
auth: {
user: 'me#myDomain.com',
pass: 'Seriously?'
}
});
... all the rest is the same, removed for brevity...
The existing posts solutions have not helped.
Thank You

Answer 1

How about this modification?
From :
let transporter = nodemailer.createTransport( {
service: 'gmail',
xoauth2: xoauth2.createXOAuth2Generator({
user: 'me#myDomain.com',
clientid: 'blahblahblah.apps.googleusercontent.com',
clientSecret: 'k33p-gUeSsINg',
refreshToken: '123BritneyIsTheBest'
}),
tls: {
rejectUnauthorized: false
}
} );
To :
let transporter = nodemailer.createTransport({
service: 'gmail',
auth: {
type: 'oauth2',
user: 'me#myDomain.com',
clientId: 'blahblahblah.apps.googleusercontent.com', // This key is "clientId".
clientSecret: 'k33p-gUeSsINg',
refreshToken: '123BritneyIsTheBest'
},
tls: {
rejectUnauthorized: false
}
});
Note :
Please confirm whether https://mail.google.com/ was included in the scope, when you retrieved the refresh token.
Please confirm whether gmail API is enabled.
It may be required to turn on "Allow less secure apps: ON" at https://myaccount.google.com/lesssecureapps.
Reference :
nodemailer OAuth2
In my environment, I confirmed that this works fine. But if this was not useful for you, I'm sorry.