Show Buttons
Share On Facebook
Share On Twitter
Share On Google Plus
Share On Linkdin
Share On Reddit
Share On Stumbleupon
Contact us
Hide Buttons

Send email using nodejs and express in 5 simple steps

Send­ing auto­matic emails is a very com­mon task and doing so in nodejs is pretty straigt­for­ward as well. In this arti­cle, I will demon­strate a sim­ple exam­ple of send­ing emails using nodejs in 5 sim­ple steps.


This arti­cle is writ­ten around the fol­low­ing sce­nario in mind

  • You have an email account with an email provider like Google which you want to spec­ify as the ‘sender’. There is a sim­ple rea­son­ing behind doing so. Emails are sent from one server to another and in order to avoid land­ing your email in the recipient’s spam folder, you want to use a truster server as the sender of the email aka — Google’s mail servers. For the pur­pose of this arti­cle, we will assume this email address is [email protected].
  • You have a web page that has a con­tact form where a user enters some infor­ma­tion and clicks on sub­mit. Upon click­ing sub­mit your express server needs to cap­ture this data and send the request infor­ma­tion to another email address.

I assume that you have at least a basic under­stand­ing of nodejs and its rout­ing. If not, take a look at this dia­gram that visu­ally depicts how rout­ing takes place in expressjs.

You prob­a­bly also want to change some set­tings on the gmail account you want to use before proceeding.

Steps

There are just 5 steps to send­ing an email using nodejs

  • Install the node­mailer package.
  • Cre­ate a trans­port object using nodemailer.createTransport() and pass it your email credentials.
  • Pre­pare the mes­sage to be sent in the body.
  • Cre­ate an object with infor­ma­tion about the sender, email sub­ject, recip­i­ent and the body con­tent that we pre­pared earlier.
  • Send the email using — transporter.sendMail()

In the code snip­pets that fol­low, we will go through each of the above steps.


STEP 1: Install the node­mailer package.

npm install nodemailer

Once you are done with this arti­cle, you should prob­a­bly learn more about node­mailer library from here.
.
STEP 2: Cre­at­ing a trans­port object in your route handler.

var nodemailer = require('nodemailer');

var router = express.Router();
app.use('/sayHello', router);
router.post('/', handleSayHello); // handle the route at yourdomain.com/sayHello

function handleSayHello(req, res) {
    // Not the movie transporter!
    var transporter = nodemailer.createTransport({
        service: 'Gmail',
        auth: {
            user: '[email protected]', // Your email id
            pass: 'password' // Your password
        }
    });
    ...
    ...
    ...
}

STEP 3: Pre­pare some plain­text or HTML con­tent to be sent in the body. I am going to sim­ply use some text.

var text = 'Hello world from \n\n' + req.body.name;

STEP 4: Cre­ate a sim­ple JSON object with the nec­es­sary val­ues for send­ing the email.

var mailOptions = {
    from: '[email protected]>', // sender address
    to: '[email protected]', // list of receivers
    subject: 'Email Example', // Subject line
    text: text //, // plaintext body
    // html: '<b>Hello world ✔</b>' // You can choose to send an HTML body instead
};

STEP 5: Your moment of glory! — Actu­ally send the email and han­dle the response.

transporter.sendMail(mailOptions, function(error, info){
    if(error){
        console.log(error);
        res.json({yo: 'error'});
    }else{
        console.log('Message sent: ' + info.response);
        res.json({yo: info.response});
    };
});

And thats pretty much all there is to it! It was quite sim­ple, wasn’nt it?


Ryan Sukale

Ryan is just a regular guy next door trying to manage his life and finances.

  • Eros Gar­cia Ponte

    Great tuto­r­ial. Who would imag­ine it was so simple.

  • Rafa Death

    I get Error: Invalid login with gmail 🙁

    • Enokela P. Acheme

      For this to work, you must allow less secure apps in your gmail settings

  • tuto­ri­al­hori­zon

    Last I remem­ber gmail had a per-day limit, around 500 for send­ing emails this way. Its either that or it does not allow you to send to more than 500 recipients.

    Using gmail would work for sim­ple use cases. But for pro­duc­tion sce­nar­ios, you prob­a­bly want to use some­thing like mailgun.com to send emails.

    Maybe I should do a quick writeup on that one too.

    • Joe

      That would be great!

  • tuto­ri­al­hori­zon

    I have just now posted a reply to Jodge for the same. You can check it out.

  • Cl Sah

    I have an error mes­sage i.e “Unable to send email: Error: Unsup­ported con­fig­u­ra­tion, down­grade Node­mailer to
    v0.7.1 to use it”

  • Luís Cunha

    I get this error when run­ning this

    Type­Er­ror: this.mailcomposer.setMessageOption is not a function

    at Nodemailer.setGeneralOptions (D:gitnodemailernode_modulesnodemailerlibnodemailer.js:228:23)

    at Nodemailer.generateMailObject (D:gitnodemailernode_modulesnodemailerlibnodemailer.js:184:10)

    at Nodemailer.sendMail (D:gitnodemailernode_modulesnodemailerlibnodemailer.js:172:10)

    at D:gitnodemailernode_modulesnodemailerlibnodemailer.js:69:20

    at Nodemailer.validateSettings (D:gitnodemailernode_modulesnodemailerlibnodemailer.js:161:5)

    at send­Mail (D:gitnodemailernode_modulesnodemailerlibnodemailer.js:63:12)

    at Transport.transport.sendMail (D:gitnodemailernode_modulesnodemailerlibnodemailer.js:40:9)

    at Object. (D:gitnodemailerapp.js:19:13)

    at Module._compile (module.js:399:26)

    at Object.Module._extensions..js (module.js:406:10)

  • jscon­estilo

    Gra­cias por la infor­ma­ción, muy útil

  • https://coolelectronicgifts.com/ Cool­elec­tron­icgifts

    Looks good!

  • Lucy

    I tried the same, but I keep get­ting POST http://localhost:8080/contact 404 (Not Found) error. Any­one know what could be reason?

  • Lucy

    I fol­low the same, but keep get­ting error POST http://localhost:8080/contact 404 (Not Found)

    • Rohan Sharma

      404 sta­tus occurs when the browser is unable to access the URI (http://localhost:8080/contact) or may be you are try­ing to the access the URI directly through the browser, you can’t access POST apis directly by browser but you do this with GET apis.

  • Mohit Mit­tal

    Awe­some tuto­r­ial. Worked like charm in the first go. Never expected from a mail tuto­r­ial to work in the first go !

  • http://erik.landvall.se/ Erik Land­vall

    this doesn’t send any emails, gmail does.. bet­ter head­line: how to send emails through gmail with nodejs and Express…

  • Pingback: Express, Node, Particles, – Maameri's Maakings()

  • Sheikh Sub­tain Ishfaq

    Per­fect .

  • Mayur Kagade

    great tuto­r­ial its much easy but get­ting error like trans­porter is not defined

  • K. Join

    Great tuto­r­ial. Thanks

  • Hec­tor Andres Perez Villatoro

    Hello — My prob­lem is that it works locally but not in the ‘live’ site.
    I don’t know why this is. This is uploaded to heroku. : https://le-hector-goes-online.herokuapp.com/contact I’m not very expe­ri­enced, and it’s my first time mak­ing a website.