npm package: @stdlib/assert-is-email-address
Description: Test if a value is an email address.
Author: The Stdlib Authors
Latest version: 0.2.3

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<details>
  <summary>
    About stdlib...
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# isEmail

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Test if a value is an email address.

<section class="intro">

</section>

<!-- /.intro -->

<section class="installation">

## Installation

```bash
npm install @stdlib/assert-is-email-address
```

</section>

<section class="usage">

## Usage

```javascript
var isEmail = require( '@stdlib/assert-is-email-address' );
```

#### isEmail( value )

Tests if a `value` is an [email address][validate-email-address].

```javascript
var bool = isEmail( 'beep@boop.com' );
// returns true
```

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   Validation is **not** rigorous, nor [should it be][validate-email-address]. **9** RFCs relate to email addresses, and accounting for all of them is a fool's errand. This module performs the simplest validation; i.e., requiring **at least** one `@` symbol.
-   For rigorous validation, send a confirmation email. If the email bounces, consider the email invalid.

<!-- </notes -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var isEmail = require( '@stdlib/assert-is-email-address' );

var bool;

bool = isEmail( 'beep@boop.com' );
// returns true

bool = isEmail( 'beep' );
// returns false

bool = isEmail( 'beep.com' );
// returns false

bool = isEmail( null );
// returns false
```

</section>

<!-- /.examples -->



<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

## See Also

-   <span class="package-name">[`@stdlib/assert-is-email-address-cli`][@stdlib/assert-is-email-address-cli]</span><span class="delimiter">: </span><span class="description">CLI package for use as a command-line utility.</span>


</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->


<section class="main-repo" >

* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

<!-- /.stdlib -->

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<section class="links">

[@stdlib/assert-is-email-address-cli]: https://www.npmjs.com/package/@stdlib/assert-is-email-address-cli

[npm-image]: http://img.shields.io/npm/v/@stdlib/assert-is-email-address.svg
[npm-url]: https://npmjs.org/package/@stdlib/assert-is-email-address

[test-image]: https://github.com/stdlib-js/assert-is-email-address/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/assert-is-email-address/actions/workflows/test.yml?query=branch:v0.2.3

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/assert-is-email-address/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/assert-is-email-address?branch=main

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[chat-image]: https://img.shields.io/badge/zulip-join_chat-brightgreen.svg
[chat-url]: https://stdlib.zulipchat.com

[stdlib]: https://github.com/stdlib-js/stdlib

[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors

[cli-section]: https://github.com/stdlib-js/assert-is-email-address#cli
[cli-url]: https://github.com/stdlib-js/assert-is-email-address/tree/cli
[@stdlib/assert-is-email-address]: https://github.com/stdlib-js/assert-is-email-address/tree/main

[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/assert-is-email-address/tree/deno
[deno-readme]: https://github.com/stdlib-js/assert-is-email-address/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/assert-is-email-address/tree/umd
[umd-readme]: https://github.com/stdlib-js/assert-is-email-address/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/assert-is-email-address/tree/esm
[esm-readme]: https://github.com/stdlib-js/assert-is-email-address/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/assert-is-email-address/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-email-address/main/LICENSE

[validate-email-address]: http://davidcel.is/posts/stop-validating-email-addresses-with-regex/

[standard-streams]: https://en.wikipedia.org/wiki/Standard_streams

[mdn-regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

</section>

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