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Email Sending Libraries: Nodemailer vs SendGrid

Both packages help developers send emails from Node.js applications. Nodemailer is a free, open-source solution that works with various email services and your own email server. SendGrid is a commercial service with a more robust infrastructure, better for sending bulk emails and tracking delivery stats.

Email Service LibrariesemailnotificationsSMTPtransactional-emailmail-service

Detailed Comparison

Technical Analysis

featureComparison

Nodemailer is a more comprehensive email sending library, supporting multiple transport methods (SMTP, Sendmail, AWS SES, etc.). SendGrid is a cloud-based email service that provides a more streamlined API for sending emails. Nodemailer requires more configuration, but offers more flexibility.

typescriptSupport

Both packages have TypeScript definitions, but Nodemailer's support is more extensive.

browserCompatibility

Nodemailer is not designed for browser use, while SendGrid provides a browser-friendly API.

dependencies

Nodemailer has fewer dependencies (5) compared to SendGrid (15).

performance

Nodemailer's performance is highly dependent on the chosen transport method, while SendGrid's performance is optimized for their cloud-based service.

Ecosystem Analysis

frameworkCompatibility

Both packages are compatible with popular frameworks like Express.js and Next.js.

communityActivity

Nodemailer has a more active community, with more open issues and pull requests.

documentationQuality

SendGrid's documentation is more comprehensive and user-friendly.

maintenanceStatus

Both packages are actively maintained, with regular updates and bug fixes.

Performance Comparison

bundleSizeAnalysis

SendGrid's bundle size is significantly larger due to its inclusion of additional features and dependencies.

runtimePerformance

Nodemailer's performance is highly dependent on the chosen transport method, while SendGrid's performance is optimized for their cloud-based service.

loadingTime

Nodemailer's loading time is generally faster due to its smaller bundle size.

memoryUsage

Nodemailer's memory usage is generally lower due to its more modular design.

Code Examples

Nodemailer Example

1const nodemailer = require('nodemailer');
2const transporter = nodemailer.createTransport({
3  host: 'smtp.example.com',
4  port: 587,
5  secure: false, // or 'STARTTLS'
6  auth: {
7    user: 'username',
8    pass: 'password'
9  }
10});
11
12transporter.sendMail({
13  from: 'sender@example.com',
14  to: 'receiver@example.com',
15  subject: 'Hello from Nodemailer',
16  text: 'Hello from Nodemailer'
17});

This example shows how to create a transporter using Nodemailer and send a simple email.

SendGrid Example

1const sgMail = require('@sendgrid/mail');
2sgMail.setApiKey(process.env.SENDGRID_API_KEY);
3
4const msg = {
5  to: 'receiver@example.com',
6  from: 'sender@example.com',
7  subject: 'Hello from SendGrid',
8  text: 'Hello from SendGrid'
9};
10sgMail.send(msg).then(() => {
11  console.log('Email sent');
12}).catch((error) => {
13  console.error(error);
14});

This example shows how to set up SendGrid with an API key and send a simple email using their API.

Recommendation

Summary

Nodemailer is a more flexible and customizable email sending library, while SendGrid provides a more streamlined and cloud-based email service.

Details

  • Nodemailer is better suited for complex email sending requirements, while SendGrid is ideal for simple email sending use cases.
  • Nodemailer requires more configuration, but offers more flexibility.

Similar Packages

emailjs

90%

A simple way to send emails using JavaScript directly from your browser. No server required - it connects to EmailJS service which handles the email sending.

Perfect for front-end developers who want to send emails without setting up a backend server. Very beginner-friendly with good documentation and easy setup.

Email Service

mailgun-js

90%

Official SDK for Mailgun's email service. Lets you send emails, create mailing lists, and track email delivery through their API.

Great alternative to SendGrid with similar features but often cheaper pricing. Has a generous free tier and simple API that's easy to learn.

Email Service

aws-sdk

80%

Amazon's SDK that includes Amazon SES (Simple Email Service). Allows you to send emails through Amazon's reliable infrastructure.

Good choice if you're already using AWS services. Very reliable and scalable, with good pricing for high volume sending.

Email Service

postmark

80%

Email delivery service focused on transactional emails. Known for excellent delivery rates and detailed analytics.

Best choice for sending important transactional emails like password resets or order confirmations. Has great tools for tracking email delivery.

Email Service

email-templates

70%

Package for generating nice-looking email templates. Works with any email service and includes preview features and template management.

Great companion to any email service. Makes it easy to create and manage good-looking email templates with less code.

Email Tools

Nodemailer

Nodemailer

Send emails from Node.js – easy as cake! 🍰✉️

NPM

See nodemailer.com for documentation and terms.

[!TIP] Check out EmailEngine – a self-hosted email gateway that allows making REST requests against IMAP and SMTP servers. EmailEngine also sends webhooks whenever something changes on the registered accounts.

Using the email accounts registered with EmailEngine, you can receive and send emails. EmailEngine supports OAuth2, delayed sends, opens and clicks tracking, bounce detection, etc. All on top of regular email accounts without an external MTA service.

Having an issue?

First review the docs

Documentation for Nodemailer can be found at nodemailer.com.

Nodemailer throws a SyntaxError for "..."

You are using an older Node.js version than v6.0. Upgrade Node.js to get support for the spread operator. Nodemailer supports all Node.js versions starting from Node.js@v6.0.0.

I'm having issues with Gmail

Gmail either works well, or it does not work at all. It is probably easier to switch to an alternative service instead of fixing issues with Gmail. If Gmail does not work for you, then don't use it. Read more about it here.

I get ETIMEDOUT errors

Check your firewall settings. Timeout usually occurs when you try to open a connection to a firewalled port either on the server or on your machine. Some ISPs also block email ports to prevent spamming.

Nodemailer works on one machine but not in another

It's either a firewall issue, or your SMTP server blocks authentication attempts from some servers.

I get TLS errors

  • If you are running the code on your machine, check your antivirus settings. Antiviruses often mess around with email ports usage. Node.js might not recognize the MITM cert your antivirus is using.
  • Latest Node versions allow only TLS versions 1.2 and higher. Some servers might still use TLS 1.1 or lower. Check Node.js docs on how to get correct TLS support for your app. You can change this with tls.minVersion option
  • You might have the wrong value for the secure option. This should be set to true only for port 465. For every other port, it should be false. Setting it to false does not mean that Nodemailer would not use TLS. Nodemailer would still try to upgrade the connection to use TLS if the server supports it.
  • Older Node versions do not fully support the certificate chain of the newest Let's Encrypt certificates. Either set tls.rejectUnauthorized to false to skip chain verification or upgrade your Node version
let configOptions = { host: "smtp.example.com", port: 587, tls: { rejectUnauthorized: true, minVersion: "TLSv1.2" } }

I have issues with DNS / hosts file

Node.js uses c-ares to resolve domain names, not the DNS library provided by the system, so if you have some custom DNS routing set up, it might be ignored. Nodemailer runs dns.resolve4() and dns.resolve6() to resolve hostname into an IP address. If both calls fail, then Nodemailer will fall back to dns.lookup(). If this does not work for you, you can hard code the IP address into the configuration like shown below. In that case, Nodemailer would not perform any DNS lookups.

let configOptions = { host: "1.2.3.4", port: 465, secure: true, tls: { // must provide server name, otherwise TLS certificate check will fail servername: "example.com" } }

I have an issue with TypeScript types

Nodemailer has official support for Node.js only. For anything related to TypeScript, you need to directly contact the authors of the type definitions.

I have a different problem

If you are having issues with Nodemailer, then the best way to find help would be Stack Overflow or revisit the docs.

License

Nodemailer is licensed under the MIT No Attribution license


The Nodemailer logo was designed by Sven Kristjansen.

THIS PACKAGE HAS MOVED

Please see the latest official package here, thank you!

BuildStatus npm version Email Notifications Badge

NEW: Subscribe to email notifications for releases and breaking changes.

This library allows you to quickly and easily use the SendGrid Web API v3 via Node.js.

Version 3.X.X+ of this library provides full support for all SendGrid Web API v3 endpoints, including the new v3 /mail/send.

This library represents the beginning of a new path for SendGrid. We want this library to be community driven and SendGrid led. We need your help to realize this goal. To help make sure we are building the right things in the right order, we ask that you create issues and pull requests or simply upvote or comment on existing issues or pull requests.

Please browse the rest of this README for further detail.

We appreciate your continued support, thank you!

Table of Contents

  • Installation
  • Quick Start
  • Usage
  • Use Cases
  • Announcements
  • Roadmap
  • How to Contribute
  • Troubleshooting
  • About

<a name="installation"></a>

Installation

Prerequisites

  • Node.js version 4, 6 or 7
  • The SendGrid service, starting at the free level

Setup Environment Variables

Update the development environment with your SENDGRID_API_KEY, for example:

echo "export SENDGRID_API_KEY='YOUR_API_KEY'" > sendgrid.env echo "sendgrid.env" >> .gitignore source ./sendgrid.env

Install Package

The following recommended installation requires npm. If you are unfamiliar with npm, see the npm docs. Npm comes installed with Node.js since node version 0.8.x therefore you likely already have it.

npm install --save sendgrid

Dependencies

  • Nodejs-HTTP-Client

<a name="quick_start"></a>

Quick Start

Hello Email

The following is the minimum needed code to send an email with the /mail/send Helper (here is a full example):

With Mail Helper Class

var helper = require('sendgrid').mail; var fromEmail = new helper.Email('test@example.com'); var toEmail = new helper.Email('test@example.com'); var subject = 'Sending with SendGrid is Fun'; var content = new helper.Content('text/plain', 'and easy to do anywhere, even with Node.js'); var mail = new helper.Mail(fromEmail, subject, toEmail, content); var sg = require('sendgrid')(process.env.SENDGRID_API_KEY); var request = sg.emptyRequest({ method: 'POST', path: '/v3/mail/send', body: mail.toJSON() }); sg.API(request, function (error, response) { if (error) { console.log('Error response received'); } console.log(response.statusCode); console.log(response.body); console.log(response.headers); });

The Mail constructor creates a personalization object for you. Here is an example of how to add to it.

Without Mail Helper Class

The following is the minimum needed code to send an email without the /mail/send Helper (here is a full example):

var sg = require('sendgrid')(process.env.SENDGRID_API_KEY); var request = sg.emptyRequest({ method: 'POST', path: '/v3/mail/send', body: { personalizations: [ { to: [ { email: 'test@example.com' } ], subject: 'Sending with SendGrid is Fun' } ], from: { email: 'test@example.com' }, content: [ { type: 'text/plain', value: 'and easy to do anywhere, even with Node.js' } ] } }); // With promise sg.API(request) .then(function (response) { console.log(response.statusCode); console.log(response.body); console.log(response.headers); }) .catch(function (error) { // error is an instance of SendGridError // The full response is attached to error.response console.log(error.response.statusCode); }); // With callback sg.API(request, function (error, response) { if (error) { console.log('Error response received'); } console.log(response.statusCode); console.log(response.body); console.log(response.headers); });

General v3 Web API Usage

var sg = require('sendgrid')(process.env.SENDGRID_API_KEY); // GET Collection var request = sg.emptyRequest({ method: 'GET', path: '/v3/api_keys' }); // With promise sg.API(request) .then(function (response) { console.log(response.statusCode); console.log(response.body); console.log(response.headers); }) .catch(function (error) { // error is an instance of SendGridError // The full response is attached to error.response console.log(error.response.statusCode); }); // With callback sg.API(request, function (error, response) { if (error) { console.log('Error response received'); } console.log(response.statusCode); console.log(response.body); console.log(response.headers); });

<a name="usage"></a>

Usage

  • SendGrid Docs
  • Library Usage Docs
  • Example Code
  • How-to: Migration from v2 to v3
  • v3 Web API Mail Send Helper

<a name="use_cases"></a>

Use Cases

Examples of common API use cases, such as how to send an email with a transactional template.

<a name="announcements"></a>

Announcements

Please see our announcement regarding breaking changes. Your support is appreciated!

All updates to this library are documented in our CHANGELOG and releases. You may also subscribe to email release notifications for releases and breaking changes.

<a name="roadmap"></a>

Roadmap

If you are interested in the future direction of this project, please take a look at our open issues and pull requests. We would love to hear your feedback.

<a name="contribute"></a>

How to Contribute

We encourage contribution to our libraries (you might even score some nifty swag), please see our CONTRIBUTING guide for details.

  • Feature Request
  • Bug Reports
  • Improvements to the Codebase

<a name="troubleshooting"></a>

Troubleshooting

Please see our troubleshooting guide for common library issues.

<a name="about"></a>

About

sendgrid-nodejs is guided and supported by the SendGrid Developer Experience Team.

sendgrid-nodejs is maintained and funded by SendGrid, Inc. The names and logos for sendgrid-nodejs are trademarks of SendGrid, Inc.

SendGrid Logo

Dependencies Comparison

nodemailer

Dependencies

Dev Dependencies

@aws-sdk/client-sesv23.839.0
bunyan1.8.15
c810.1.3
eslint8.57.0
eslint-config-nodemailer1.2.0
eslint-config-prettier9.1.0
libbase641.3.0
libmime5.3.7
libqp2.1.1
nodemailer-ntlm-auth1.0.4
proxy1.0.2
proxy-test-server1.0.0
smtp-server3.14.0

Peer Dependencies

sendgrid

Dependencies

async.ensureasync^0.5.2
async.queue^0.5.2
bottleneck^1.12.0
debug^2.2.0
lodash.chunk^4.2.0
mailparser^0.6.1
sendgrid-rest^2.3.0

Dev Dependencies

chai^3.5.0
eslint^3.1.0
mocha^2.4.5
mocha-sinon^1.1.5
sinon^1.17.5
sinon-chai^2.8.0
system-sleep^1.0.0-g
typescript^2.0.0

Peer Dependencies

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