I am trying to send emails from a Node.js/express server. I have an email on my custom domain which is sending these out. Emails would be sent out very rarely, but occasionally maybe 20 times in an hour. However it is always individually, and never in batches.
Around 50-75% of the time I try to send an email, I get this error, even within the first 2 or 3 emails:
Error: Server terminates connection. response=421 4.7.0 Try again later, closing connection.
My research shows its an issue with mass emailing to prevent DDoS attacks. The numbers people mention are 50+ emails within a second, however this is not my use case.
Here is how I am currently sending the mail
var transporter = nodemailer.createTransport({
host: 'smtp-relay.gmail.com',
port: 587,
auth: {
user: 'user',
pass: 'pass'
}
});
var mailOptions = {
from: 'source',
to: target_email,
subject: "suibject",
html: "text"
};
transporter.sendMail(mailOptions, function (err, info) {
if (err) {
console.log(err);
return ('Error while sending email' + err)
}
else {
console.log("Email sent");
return ('Email sent')
}
});
I have tried switching ports around, but I'm at a loss for what next to try. Any help would be much appreciated!
Edit: For anyone coming later, there was no solution anywhere. Best I could do is retry on fail by doing Retry to send mail if not sent.
It failed at max 5/6 times so just set the limit to 7 or so
I had the same issue and at least in my case I was able to fix it by setting the name property when creating the transport. For your case this would be:
var transporter = nodemailer.createTransport({
name: 'example',
host: 'smtp-relay.gmail.com',
port: 587,
auth: {
user: 'user',
pass: 'pass'
}
});
i tried nodemailer but its not working. i want to send email to user through my node js website. can anyone please help me to get it done
//code
var nodemailer = require('nodemailer');
var transporter = nodemailer.createTransport({
service: 'gmail',
auth: {
user: 'youremail#gmail.com',
pass: 'yourpassword'
}
});
var mailOptions = {
from: 'youremail#gmail.com',
to: 'myfriend#yahoo.com',
subject: 'Sending Email using Node.js',
text: 'That was easy!'
};
transporter.sendMail(mailOptions, function(error, info){
if (error) {
console.log(error);
} else {
console.log('Email sent: ' + info.response);
}
});
In my experience sending emails can be made a lot easier by outsourcing the work to a provider like https://www.mailgun.com, the cost is $0.0008 per email. The reason for this is not only simplicity but deliverability. So many people have sent so many fake and junk emails over the years, emails often end up in spam folders when the server is not set up correctly. Things like adding SPF records to domains can obviously help but in all honesty, I now just use a sending provider.
Try this. The port is important to be 465.
var transporter = nodemailer.createTransport({
service: 'gmail',
auth: {
user: 'youremail#gmail.com',
pass: 'yourpassword'
},
port: 465,
secure: true,
tls: {
rejectUnauthorized: false
}
});
const nodemailer = require('nodemailer');
let mailTransporter = nodemailer.createTransport({
host: 'smtp.gmail.com',
port: 587,
secure: false,
auth: {
user: '*************',
pass: '*********',
},
});
let mailDetails = {
from: '********',
to: 'uuwdwuvw#', //guguygugiug
subject: 'Test mail',
//text: 'redeem your gift',
html: 'redeem your coupon code ',
};
mailTransporter.sendMail(mailDetails, function (err, data) {
if (err) {
console.log('Error Occurs');
} else {
console.log('Email sent successfully');
}
});
this is my nodemailer program Even if i give wrong mail in TO addrress also it is showing message sent how to rectifyy that
Nodemailer itself can't tell if an email has been delivered or not. It can tell you only if the email has been sent. There's a difference between email being sent and being delivered. Detecting bounced emails is out of scope for the Nodemailer.
In order to do that you need to implement your own bounced email mechanism, probably with your own SMTP server. It's not an easy thing to do, so you should probably use some real email provider that has this functionality instead of Gmail (Google likes to block such applications).
Have a look at the similar question I've found on GitHub and on SO.
I'm new in node js and
I'm facing a very confusing problem in my NODE JS express application. I created a contact form and I'm using the Amazone Ubuntu server (aws) to host my application.
Previously, I have another domain name now I have different. I changed all the emails in JS file to send an email on the contact form submit. but my bad luck email still going through old emails even I changed.
here is my code
fromEmail="myfromemail#domain.com";
emailto="mytoemail#domain.com";
// create reusable transporter object using the default SMTP transport
let transporter = nodemailer.createTransport({
host: 'smtp info',
port: 465,
secure: true, // true for 465, false for other ports
auth: {
user: '', // generated ethereal user
pass: '' // generated ethereal password
}
});
// setup email data with unicode symbols
let mailOptions = {
from: 'Domain Name <myfromemail#domain.com >', // sender address
to: emailto, // list of receivers
subject: 'Test', // Subject line
html:"<h1>Test Body</h1>",
};
transporter.sendMail(mailOptions, (error, info) => {
if (error) {
return console.log(error);
}
});
guide me how I can solve this issue. If this is due to cache please let me to how I can clear it.
I solved my problem by restart app.js on the server.
You can use Nodemon, a launcher that watches for changes in code and auto-restart the application.
I've set up a basic NodeJS server (using the nodemailer module) locally (http://localhost:8080) just so that I can test whether the server can actually send out emails.
If I understand the SMTP option correctly (please correct me if I'm wrong), I can either try to send out an email from my server to someone's email account directly, or I can send the email, still using Node.js, but via an actual email account (in this case my personal Gmail account), i.e using SMTP. This option requires me to login into that acount remotely via NodeJS.
So in the server below I'm actually trying to use NodeJs to send an email from my personal email account to my personal email account.
Here's my simple server :
var nodemailer = require('nodemailer');
var transporter = nodemailer.createTransport("SMTP", {
service: 'Gmail',
auth: {
user: '*my personal Gmail address*',
pass: '*my personal Gmail password*'
}
});
var http = require('http');
var httpServer = http.createServer(function (request, response)
{
transporter.sendMail({
from: '*my personal Gmail address*',
to: '*my personal Gmail address*',
subject: 'hello world!',
text: 'hello world!'
});
}).listen(8080);
However, it's not working. I got an email by Google saying :
Google Account: sign-in attempt blocked
If this was you
You can switch to an app made by Google such as Gmail to access your account (recommended) or change
your settings at https://www.google.com/settings/security/lesssecureapps so that your account is no
longer protected by modern security standards.
I couldn't find a solution for the above problem on the nodemailer GitHub page. Does anyone have a solution/suggestion ?
Thanks! :-)
The answer is in the message from google.
Go to : https://www.google.com/settings/security/lesssecureapps
set the Access for less secure apps setting to Enable
For the second part of the problem, and in response to
I'm actually simply following the steps from the nodemailer github page so there are no errors in my code
I will refer you to the nodemailer github page, and this piece of code :
var transporter = nodemailer.createTransport({
service: 'Gmail',
auth: {
user: 'gmail.user#gmail.com',
pass: 'userpass'
}
});
It differs slightly from your code, in the fact that you have : nodemailer.createTransport("SMTP".
Remove the SMTP parameter and it works (just tested). Also, why encapsulating it in a http server? the following works :
var nodemailer = require('nodemailer');
var transporter = nodemailer.createTransport({
service: 'Gmail',
auth: {
user: 'xxx',
pass: 'xxx'
}
});
console.log('created');
transporter.sendMail({
from: 'xxx#gmail.com',
to: 'xxx#gmail.com',
subject: 'hello world!',
text: 'hello world!'
});
Outdated: refreshToken and accessToken no longer exist in JSON file output
For those who actually want to use OAuth2 / don't want to make the app "less secure", you can achieve this by
Search "Gmail API" from the google API console and click "Enable"
Follow the steps at https://developers.google.com/gmail/api/quickstart/nodejs. In the quickstart.js file, changing the SCOPES var from ['https://www.googleapis.com/auth/gmail.readonly'] to ['https://mail.google.com/'] in the quickstart js file provided as suggested in troubleshooting at https://nodemailer.com/smtp/oauth2/
After following the steps in (2), the generated JSON file will contain the acessToken, refreshToken, and expires attributes needed in the OAuth2 Examples for Nodemailer
This way you can use OAuth2 authentication like the following
let transporter = nodemailer.createTransport({
service: 'Gmail',
auth: {
type: 'OAuth2',
user: 'user#example.com',
clientId: '000000000000-xxx0.apps.googleusercontent.com',
clientSecret: 'XxxxxXXxX0xxxxxxxx0XXxX0',
refreshToken: '1/XXxXxsss-xxxXXXXXxXxx0XXXxxXXx0x00xxx',
accessToken: 'ya29.Xx_XX0xxxxx-xX0X0XxXXxXxXXXxX0x',
expires: 1484314697598
}
});
instead of storing your gmail password in plaintext and downgrading the security on your account.
i just set my domain to: smtp.gmail.com and it works. I am using a VPS Vultr.
the code:
const nodemailer = require('nodemailer');
const ejs = require('ejs');
const fs = require('fs');
let transporter = nodemailer.createTransport({
host: 'smtp.gmail.com',
port: 465,
secure: true,
auth: {
user: 'xxx#gmail.com',
pass: 'xxx'
}
});
let mailOptions = {
from: '"xxx" <xxx#gmail.com>',
to: 'yyy#gmail.com',
subject: 'Teste Templete ✔',
html: ejs.render( fs.readFileSync('e-mail.ejs', 'utf-8') , {mensagem: 'olá, funciona'})
};
transporter.sendMail(mailOptions, (error, info) => {
if (error) {
return console.log(error);
}
console.log('Message %s sent: %s', info.messageId, info.response);
});
my ejs template (e-mail.ejs):
<html>
<body>
<span>Esse é um templete teste</span>
<p> gerando com o EJS - <%=mensagem%> </p>
</body>
</html>
Make sure:
install ejs: npm install ejs --save
install nodemailer: npm install nodemailer --save
ping to smtp.gmail.com works: ping smtp.gmail.com
change xxx#gmail.com to your gmail email
change yyy#gmail.com to the email that you want to send a email
Enable less secure apps
Disable Captcha temporarily
have a nice day ;)
While the above answers do work, I'd like to point out that you can decrease security from Gmail by the following TWO steps.
STEP #1
Google Account: sign-in attempt blocked If this was you You can switch to an app made by Google such as Gmail to access your account (recommended) or change your settings at https://www.google.com/settings/security/lesssecureapps so that your account is no longer protected by modern security standards.
STEP #2
In addition to enabling Allow less secure apps, you might also need to navigate to https://accounts.google.com/DisplayUnlockCaptcha and click continue.
You only need App password for google auth, then replace your google password in your code.
go here https://myaccount.google.com/apppasswords
sample code:
const nodemailer = require('nodemailer');
var transporter = nodemailer.createTransport({
service: "Gmail",
auth: {
user: 'example#gmail.com',
pass: 'app password here'
}
});
transporter.sendMail(option, function(error, info){
if (error) {
console.log(error);
} else {
console.log('Email sent: ' + info.response);
}
});
For debugging purpose it is handy to implement a callback function (they never do on the nodemailer github page) which shows the error message (if there is one).
transporter.sendMail({
from: from,
to: to,
subject: subject,
html: text
}, function(err){
if(err)
console.log(err);
})
It helped me solve my problem... Turns out newer versions are not working properly:
"Looks like nodemailer 1.0 has breaking changes so 0.7 must be used instead: http://www.nodemailer.com/
Message posted on nodemailer as of 12/17/15:
Do not upgrade Nodemailer from 0.7 or lower to 1.0 as there are breaking changes. You can continue to use the 0.7 branch as long as you like. See the documentation for 0.7 here."
I found this answer here
And install smtp module as dependency:
npm install smtp
var nodemailer = require('nodemailer');
var transporter = nodemailer.createTransport({
service: 'gmail',
type: "SMTP",
host: "smtp.gmail.com",
secure: true,
auth: {
user: 'writeYourGmailId#gmail.com',
pass: 'YourGmailPassword'
}
});
var mailOptions = {
from: 'xyz.khan704#gmail.com',
to: 'azran.khan704#gmail.com',
subject: 'Sending Email to test Node.js nodemailer',
text: 'That was easy to test!'
};
transporter.sendMail(mailOptions, function(error, info){
if (error) {
console.log(error);
} else {
console.log('Email sent');
}
});
Go to https://myaccount.google.com/lesssecureapps
and change it ON because
Some apps and devices use less secure sign-in technology, which makes your account more vulnerable. You can turn off access for these apps, which we recommend, or turn on access if you want to use them despite the risks.
You should not use gmail password for it anymore!
Recently google has provided a new method to use in 3rd party apps or APIs. You need to use App Password instead of the gmail password. But for creating it, you need to enable 2-step Authentication mode in your google account:
You can find steps here: https://support.google.com/mail/answer/185833?hl=en
try this code its work for me.
var http = require('http');
var nodemailer = require('nodemailer');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
var fromEmail = 'akarthi#xyz.com';
var toEmail = 'akarthi#xyz.com';
var transporter = nodemailer.createTransport({
host: 'domain',
port: 587,
secure: false, // use SSL
debug: true,
auth: {
user: 'fromEmail#xyz.com',
pass: 'userpassword'
}
});
transporter.sendMail({
from: fromEmail,
to: toEmail,
subject: 'Regarding forget password request',
text: 'This is forget password response from your app',
html: '<p>Your password is <b>sample</b></p>'
}, function(error, response){
if(error){
console.log('Failed in sending mail');
console.dir({success: false, existing: false, sendError: true});
console.dir(error);
res.end('Failed in sending mail');
}else{
console.log('Successful in sending email');
console.dir({success: true, existing: false, sendError: false});
console.dir(response);
res.end('Successful in sending email');
}
});
}).listen(8000);
console.log('Server listening on port 8000');
response:
Successful in sending email
{ success: true, existing: false, sendError: false }
{ accepted: [ 'akarthi#xyz.com' ],
rejected: [],
response: '250 2.0.0 uAMACW39058154 Message accepted for delivery',
envelope:
{ from: 'akarthi#xyz.com',
to: [ 'akarthi#xyz.com' ] },
messageId: '1479809555147-33de4987-29d605fa-6ee150f1#xyz.com' }
Adding to xShirase answer just providing screenshots where to enable. Also confirm in security that previous attempt was from you.
Xshirase deserves all upvotes.Iam just showing screenshot.
Here is best way send email using gmail
const transporter = nodemailer.createTransport({
service: 'gmail',
auth: {
user: '******#gmail.com',
pass: '**********',
},
});
use two authentication from google => security => app password and do fill some stuff get app password