nodemailer vs mailgun-js vs sendgrid vs emailjs
Email Sending Libraries for Node.js Comparison
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What's Email Sending Libraries for Node.js?

Email sending libraries in Node.js provide developers with tools to send emails programmatically, facilitating communication within applications. These libraries abstract the complexities of email protocols and services, allowing for easy integration of email functionalities such as sending notifications, alerts, or user communications. They often support various features like templating, attachments, and service integrations, making them essential for modern web applications that require reliable email delivery.

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nodemailer4,557,76216,931508 kB17a month agoMIT-0
mailgun-js130,599894-526 years agoMIT
sendgrid51,0233,015-737 years agoMIT
emailjs47,1572,195160 kB7a year agoMIT
Feature Comparison: nodemailer vs mailgun-js vs sendgrid vs emailjs

Ease of Use

  • nodemailer:

    Nodemailer is relatively easy to use, especially for those familiar with Node.js. It requires some configuration for SMTP settings but offers a flexible API for sending emails with attachments and HTML content.

  • mailgun-js:

    Mailgun-js offers a well-documented API that is easy to use, but it may require some initial configuration with the Mailgun service. Once set up, it provides powerful features for managing email campaigns.

  • sendgrid:

    SendGrid has a simple API and excellent documentation, making it easy to implement. It also provides a web interface for managing email templates and tracking, which enhances usability.

  • emailjs:

    EmailJS provides a user-friendly interface and straightforward API, allowing developers to send emails with minimal setup. It is designed for quick integration, making it suitable for projects that require rapid development.

Integration Capabilities

  • nodemailer:

    Nodemailer can be integrated with any Node.js application and supports various transport methods, including SMTP, AWS SES, and more. This flexibility makes it suitable for diverse project requirements.

  • mailgun-js:

    Mailgun-js integrates well with various Node.js applications and supports webhooks for event-driven email handling. It also provides SDKs for other languages, enhancing its versatility.

  • sendgrid:

    SendGrid offers extensive integration options with other services and platforms, including APIs for analytics and email tracking. It also supports webhooks for real-time event notifications.

  • emailjs:

    EmailJS integrates seamlessly with front-end frameworks and allows sending emails directly from the client, which is unique among these options. It is ideal for applications that need to send emails without a backend.

Features and Functionality

  • nodemailer:

    Nodemailer offers a wide range of features, including support for attachments, HTML content, and various transport methods. It is highly customizable, allowing developers to tailor email functionalities to their needs.

  • mailgun-js:

    Mailgun-js provides advanced features such as email validation, tracking, and analytics, making it suitable for applications that require detailed insights into email performance.

  • sendgrid:

    SendGrid includes features like email templates, A/B testing, and comprehensive analytics, making it a powerful choice for applications that require robust email marketing capabilities.

  • emailjs:

    EmailJS focuses on simplicity and ease of use, providing basic email functionalities without advanced features like analytics or tracking. It is best for straightforward email sending needs.

Scalability

  • nodemailer:

    Nodemailer can scale with your application, but performance depends on the underlying SMTP service used. It is best suited for applications that manage their own email servers or use reliable SMTP providers.

  • mailgun-js:

    Mailgun-js is built for scalability, allowing applications to send thousands of emails per day without performance issues. It is ideal for growing applications that anticipate increased email traffic.

  • sendgrid:

    SendGrid is designed for high scalability and can handle large volumes of emails effortlessly. It is a preferred choice for businesses that require reliable email delivery at scale.

  • emailjs:

    EmailJS is suitable for small to medium projects but may not handle large volumes of emails efficiently due to its client-side nature. It is not designed for high scalability.

Support and Community

  • nodemailer:

    Nodemailer has a large user base and extensive documentation, along with community support through GitHub, making it easy to find solutions to common issues.

  • mailgun-js:

    Mailgun has a strong community and provides excellent support resources, including documentation, tutorials, and a responsive support team.

  • sendgrid:

    SendGrid offers comprehensive support resources, including documentation, tutorials, and a dedicated support team, along with a large community of users.

  • emailjs:

    EmailJS has a growing community and offers decent support through documentation and forums, but it may not be as extensive as the others.

How to Choose: nodemailer vs mailgun-js vs sendgrid vs emailjs
  • nodemailer:

    Opt for Nodemailer if you want a flexible and customizable solution that can work with various email services, including SMTP. It is perfect for developers who need full control over email sending and prefer to manage their own email server or use existing SMTP services.

  • mailgun-js:

    Select mailgun-js if you require advanced email features such as analytics, tracking, and high deliverability rates. Mailgun is a robust service suited for applications that need to send a large volume of emails and require detailed reporting and analytics.

  • sendgrid:

    Use SendGrid if you are looking for a comprehensive email delivery service with built-in features like email templates, analytics, and high deliverability. It is especially beneficial for applications that require scalability and reliability in email sending.

  • emailjs:

    Choose EmailJS if you need a simple and straightforward solution for sending emails directly from the client-side without server-side code. It is ideal for small projects or applications where you want to minimize backend complexity.

Similar Npm Packages to nodemailer

nodemailer is a popular Node.js module used for sending emails. It provides a simple and efficient way to send emails from your applications, whether it's for notifications, password resets, or any other communication needs. Nodemailer supports various transport methods, including SMTP, and can be easily integrated with different email services. Its flexibility and ease of use make it a go-to choice for developers looking to implement email functionality in their applications.

While Nodemailer is a robust solution, there are several alternatives available that cater to different use cases:

  • emailjs is a simple and lightweight library for sending emails directly from JavaScript. It allows you to send emails using various email services without the need for a backend server. EmailJS is particularly useful for client-side applications where you want to send emails without exposing your SMTP credentials. Its straightforward API makes it easy to integrate into your projects, especially for forms and user interactions.

  • mailgun-js is a powerful library that provides a wrapper around the Mailgun API, allowing developers to send and manage emails effortlessly. Mailgun is a popular email service that offers advanced features such as email tracking, analytics, and templates. If you need a more feature-rich solution for sending transactional emails or handling large volumes of email, mailgun-js is an excellent choice.

  • sendgrid is another widely used email delivery service that provides an API for sending emails. The SendGrid Node.js library simplifies the process of integrating with the SendGrid API, offering features like email tracking, analytics, and templates. If you are looking for a reliable and scalable solution for sending emails, especially for marketing campaigns or bulk emails, SendGrid is a strong contender.

To explore how Nodemailer compares with emailjs, mailgun-js, and sendgrid, check out the comparison: Comparing emailjs vs mailgun-js vs nodemailer vs sendgrid.

Similar Npm Packages to mailgun-js

mailgun-js is a popular Node.js client for the Mailgun API, which is a powerful email delivery service. This package allows developers to easily send, receive, and track emails from their applications using Mailgun's robust infrastructure. With features such as email validation, tracking, and analytics, mailgun-js simplifies the process of integrating email functionality into applications. However, there are several alternatives available that also provide email sending capabilities. Here are a few notable options:

  • nodemailer is a widely used email sending library for Node.js applications. It allows developers to send emails easily using SMTP or other transport methods. nodemailer is highly customizable and supports various features, including attachments, HTML content, and templating. If you prefer a library that provides more control over the email sending process and allows you to use your own SMTP server or third-party services, nodemailer is an excellent choice. Its simplicity and flexibility make it suitable for a wide range of applications, from small projects to larger systems.

  • sendgrid is another popular email delivery service that provides a Node.js library for sending emails through its API. With features like email tracking, analytics, and templates, sendgrid offers a comprehensive solution for managing email communications. It is particularly well-suited for applications that require high deliverability and scalability. If you are looking for a robust email service with extensive features and reliable performance, sendgrid is a strong contender. Its API is designed to handle large volumes of emails, making it ideal for businesses and applications with significant email needs.

For a detailed comparison of these packages, check out the link: Comparing mailgun-js vs nodemailer vs sendgrid.

Similar Npm Packages to sendgrid

sendgrid is a cloud-based email delivery service that provides a reliable way to send transactional and marketing emails. It offers a robust API, making it easy for developers to integrate email functionality into their applications. With features like email tracking, analytics, and templates, SendGrid is a popular choice for businesses looking to manage their email communications effectively. However, there are several alternatives available that also provide email sending capabilities. Here are a few notable ones:

  • nodemailer is a popular Node.js module that allows you to send emails easily. It supports various transport methods, including SMTP, and can be used with any email service provider. Nodemailer is known for its simplicity and flexibility, making it a great choice for developers who want to send emails directly from their Node.js applications without relying on a third-party service. It is particularly useful for sending transactional emails and can be easily integrated into existing applications.

  • sparkpost is another cloud-based email delivery service that focuses on providing high deliverability rates and advanced analytics. Like SendGrid, SparkPost offers a powerful API for sending emails and includes features such as real-time tracking, templates, and A/B testing. SparkPost is ideal for businesses that require detailed insights into their email performance and want to optimize their email campaigns. It is particularly well-suited for larger organizations that send a high volume of emails.

To see how SendGrid compares with Nodemailer and SparkPost, check out the comparison: Comparing nodemailer vs sendgrid vs sparkpost.

Similar Npm Packages to emailjs

emailjs is a popular JavaScript library that enables developers to send emails directly from their client-side applications. It provides a simple and efficient way to integrate email functionality without the need for a backend server. This can be particularly useful for applications that require user feedback, notifications, or any other form of email communication. While emailjs offers a straightforward solution for sending emails, there are several alternatives in the ecosystem that provide similar functionalities. Here are a few notable options:

  • mailgun-js is a Node.js client for the Mailgun API, which is a powerful email service provider. It allows developers to send, receive, and track emails effortlessly. Mailgun is known for its robust features, including email validation, analytics, and high deliverability rates. If your application requires advanced email capabilities, such as handling large volumes of emails or detailed tracking, mailgun-js is an excellent choice.
  • nodemailer is a widely-used module for Node.js applications that allows you to send emails easily. It supports various transport methods, including SMTP, and can be configured to work with different email service providers. Nodemailer is highly customizable and is suitable for both simple and complex email-sending tasks. If you prefer a more traditional approach to sending emails from your server-side application, nodemailer is a reliable option.
  • sendgrid is another popular email service that provides a comprehensive API for sending emails. The SendGrid Node.js library allows developers to integrate email functionality into their applications seamlessly. It offers features like email tracking, analytics, and templates, making it a great choice for applications that require sophisticated email capabilities. If your application needs to handle transactional emails or marketing campaigns, sendgrid is a strong contender.

To see how emailjs compares with mailgun-js, nodemailer, and sendgrid, check out the comparison: Comparing emailjs vs mailgun-js vs nodemailer vs sendgrid.

README for nodemailer

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.

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