Error when sending email using nodemailer

You need to set up the transporter differently, using the actual email and password of a real Google Account.

// create reusable transporter object using the default SMTP transportlet transporter = nodemailer.createTransport({    service: 'gmail',    auth: {        user: 'somerealemailaddress@gmail.com', //email address to send from        pass: 'somerealemailpassword' //the actual password for that account    }});

Similar question

Sample code: OAuth2 in Nodemailer

var email_smtp = nodemailer.createTransport({        host: "smtp.gmail.com",  auth: {    type: "OAuth2",    user: "youremail@gmail.com",    clientId: "CLIENT_ID_HERE",    clientSecret: "CLIENT_SECRET_HERE",    refreshToken: "REFRESH_TOKEN_HERE"                                }});

const xoauth2 = require("xoauth2");Actually in my case i didn't make use of the above code which i have mentioned and yet it worked fine...Just changed the google settings from the link sent in the error and it was fine.But i get the error especially when i try to use yahoo as the service provider instead of google.I have attached a screenshot of the error which i get for your reference.The error which i get while using yahoo as service provider