As technology advances and more businesses move to online platforms, email validation has become a necessity. Email validation ensures that users enter a valid email address before submitting a form or creating an account. In this article, we will discuss how to validate email addresses in JavaScript using NPM.

What is NPM?

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NPM stands for Node Package Manager, which is a package manager for the JavaScript programming language. NPM allows developers to easily install and manage packages or libraries for their projects.

What is Email Validation?

Email validation is the process of verifying whether an email address is valid or not. It checks if the email address is formatted correctly and if it exists in the intended recipient’s mailbox.

Email Validation with NPM

There are several NPM packages available for email validation, such as email-validator, validator, and email-check. In this article, we will focus on email-validator.

Installing email-validator

To install email-validator, run the following command in your terminal:

npm install email-validator

Using email-validator

Using email-validator is simple. First, require the email-validator package:

const emailValidator = require('email-validator')	

Then, use the validate() function to validate an email address:

const isValidEmail = emailValidator.validate('')	

The validate() function returns a boolean value indicating whether the email address is valid or not.

Customizing email-validator

Email-validator also allows you to customize the validation options. For example, you can allow or disallow specific top-level domains:

const options = { allowTld: false }	 const isValidEmail = emailValidator.validate('', options)	

There are several other options available, such as allowUnicode, allowIpDomain, and requireDisplayName.


Validating email addresses is an important step in ensuring data accuracy and preventing spam. With NPM packages like email-validator, email validation can be easily implemented in JavaScript projects. By following the steps outlined in this article, you can ensure that your users enter valid email addresses and improve the overall user experience.