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5. dominicsayers/isemail

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dominicsayers/isemail
=====================

Checks an email address against the following RFCs: 3696, 1123, 4291, 5321, 5322

v3.0.7(9y ago)308134.4k↑10.2%42[7 issues](https://github.com/dominicsayers/isemail/issues)[1 PRs](https://github.com/dominicsayers/isemail/pulls)3BSDPHP

Since Dec 7Pushed 5y ago19 watchersCompare

[ Source](https://github.com/dominicsayers/isemail)[ Packagist](https://packagist.org/packages/dominicsayers/isemail)[ Docs](https://isemail.info)[ RSS](/packages/dominicsayers-isemail/feed)WikiDiscussions master Synced 1mo ago

READMEChangelog (1)DependenciesVersions (2)Used By (3)

is\_email()
===========

[](#is_email)

Copyright 2008-2016 Dominic Sayers

BSD License ()

How to use is\_email()
----------------------

[](#how-to-use-is_email)

1. Add the downloaded file is\_email.php to your project
2. In your scripts use it like this:

```
	require_once 'is_email.php';
	if (is_email($email)) echo "$email is a valid email address";
```

1. If you want to return detailed diagnostic error codes then you can ask is\_email to do so. Something like this should work:

```
	require_once 'is_email.php';
	$email = 'dominic@sayers.cc';
	$result = is_email($email, true, true);

	if ($result === ISEMAIL_VALID) {
		echo "$email is a valid email address";
	} else if ($result < ISEMAIL_THRESHOLD) {
		echo "Warning! $email has unusual features (result code $result)";
	} else {
		echo "$email is not a valid email address (result code $result)";
	}
```

1. Example scripts are in the extras folder

Version history
---------------

[](#version-history)

DateComponentVersionNotes2016-12-07(all)3.0.7Semantic version numbering2016-12-05(all)3.06Changed all http links to https. Updated my links. Updated copyright. Clarified license2013-11-29tests.xml3.05Changed Test #71 from ISEMAIL\_RFC5321 to ISEMAIL\_DEPREC2013-11-29meta.xml3.05Changed category of ISEMAIL\_RFC5321\_IPV6DEPRECATED to ISEMAIL\_DEPREC2011-07-14tests.xml3.04Changed my link to 2011-05-23tests.xml3.02tests.php: Argument no longer passed by reference (deprecated). Test#32: Changed domain to c--n.com because g--a.com no longer has an MX record.2010-11-15meta.xml3.03Clarified definition of Valid for numpties2010-10-18tests.xml3.0New schema designed to enhance fault identification.2010-10-18is\_email.php3.0Forensic categorization of email validity

###  Health Score

43

—

FairBetter than 91% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity52

Moderate usage in the ecosystem

Community25

Small or concentrated contributor base

Maturity63

Established project with proven stability

 Bus Factor1

Top contributor holds 64.7% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Unknown

Total

1

Last Release

3449d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/bdb36af08b28366abd6ee98ca02aeeabe1994e783e156d8595ad48dd0fd6151f?d=identicon)[dominicsayers](/maintainers/dominicsayers)

---

Top Contributors

[![dominicsayers](https://avatars.githubusercontent.com/u/34939?v=4)](https://github.com/dominicsayers "dominicsayers (22 commits)")[![dhoerl](https://avatars.githubusercontent.com/u/812695?v=4)](https://github.com/dhoerl "dhoerl (11 commits)")[![wedi](https://avatars.githubusercontent.com/u/1466269?v=4)](https://github.com/wedi "wedi (1 commits)")

---

Tags

validationemail

### Embed Badge

![Health badge](/badges/dominicsayers-isemail/health.svg)

```
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