MailChecker

Cross-language email validation. Backed by a database of over 55 000 throwable email domains.

Validate the format of your email (uses validator.js email regex underneath and FILTER_VALIDATE_EMAIL for PHP)
Validate if the email is not a temporary mail (yopmail-like..., add your own dataset to list.txt)

This will be very helpful when you have to contact your users and you want to avoid errors causing lack of communication or want to block "spamboxes".

Need to provide Webhooks inside your SaaS?

Try Hook0, an open-source self-hostable webhook micro-service

Need to embed a charts into an email?

It's over with Image-Charts, no more server-side rendering pain, 1 url = 1 chart.

https://image-charts.com/chart?
cht=lc // chart type
&chd=s:cEAELFJHHHKUju9uuXUc // chart data
&chxt=x,y // axis
&chxl=0:|0|1|2|3|4|5| // axis labels
&chs=873x200 // size

Use Image-Charts for free

Upgrade

From 3.x to 4.x

# import using the fully qualified name.
use Fgribreau\MailChecker;

// ...
echo MailChecker::isValid('myemail@yopmail.com');

From 1.x to 3.x

Mailchecker public API has been normalized, here are the changes:

NodeJS/JavaScript: MailChecker(email) -> MailChecker.isValid(email)
PHP: MailChecker($email) -> MailChecker::isValid($email)
Python

import MailChecker
m = MailChecker.MailChecker()
if not m.is_valid('bla@example.com'):
  # ...

became:

import MailChecker
if not MailChecker.is_valid('bla@example.com'):
  # ...

MailChecker currently supports:

NodeJS (CommonJS, Instructions)
JavaScript (Client-Side, Instructions)
PHP (Instructions)
Python (Instructions)
Ruby (Instructions)
Rust (Instructions)
Elixir (Instructions)
Clojure (Instructions)
Go (Instructions)
Easily add support for your own language with MailChecker template system and send us a pull-request!

Usage

NodeJS

var MailChecker = require('mailchecker');

if(!MailChecker.isValid('myemail@yopmail.com')){
  console.error('O RLY !');
  process.exit(1);
}

if(!MailChecker.isValid('myemail.com')){
  console.error('O RLY !');
  process.exit(1);
}

JavaScript

<script type="text/javascript" src="MailChecker/platform/javascript/MailChecker.js"></script>
<script type="text/javascript">
if(!MailChecker.isValid('myemail@yopmail.com')){
  console.error('O RLY !');
}

if(!MailChecker.isValid('myemail.com')){
  console.error('O RLY !');
}
</script>

PHP

use Fgribreau\MailChecker;

require __DIR__ . '/vendor/autoload.php';

if(!MailChecker::isValid('myemail@yopmail.com')){
  die('O RLY !');
}

if(!MailChecker::isValid('myemail.com')){
  die('O RLY !');
}

Python

pip install mailchecker

# no package yet; just drop in MailChecker.py where you want to use it.
from MailChecker import MailChecker

if not MailChecker.is_valid('bla@example.com'):
    print "O RLY !"

Django validator: https://github.com/jonashaag/django-indisposable

Ruby

require 'mail_checker'

unless MailChecker.valid?('myemail@yopmail.com')
  fail('O RLY!')
end

Rust

 extern crate mailchecker;

assert_eq!(true, mailchecker::is_valid("plop@plop.com"));
assert_eq!(false, mailchecker::is_valid("\nok@gmail.com\n"));
assert_eq!(false, mailchecker::is_valid("ok@guerrillamailblock.com"));

Elixir

Code.require_file("mail_checker.ex", "mailchecker/platform/elixir/")

unless MailChecker.valid?("myemail@yopmail.com") do
  raise "O RLY !"
end

unless MailChecker.valid?("myemail.com") do
  raise "O RLY !"
end

Clojure

; no package yet; just drop in mailchecker.clj where you want to use it.
(load-file "platform/clojure/mailchecker.clj")

(if (not (mailchecker/valid? "myemail@yopmail.com"))
  (throw (Throwable. "O RLY!")))

(if (not (mailchecker/valid? "myemail.com"))
  (throw (Throwable. "O RLY!")))

Go

package main

import (
  "log"
  
  "github.com/FGRibreau/mailchecker/platform/go"
)

if !mail_checker.IsValid('myemail@yopmail.com') {
  log.Fatal('O RLY !');
}

if !mail_checker.IsValid('myemail.com') {
  log.Fatal("O RLY !")
}

Installation

go get https://github.com/FGRibreau/mailchecker

NodeJS/JavaScript

npm install mailchecker

Ruby

gem install ruby-mailchecker

PHP

composer require fgribreau/mailchecker

We accept pull-requests for other package manager.

Data sources

TorVPN

  $('td', 'table:last').map(function(){
    return this.innerText;
  }).toArray();

BloggingWV

  Array.prototype.slice.call(document.querySelectorAll('.entry > ul > li a')).map(function(el){return el.innerText});

... please add your own dataset to list.txt.

Regenerate libraries from list.txt

Just run (requires NodeJS):

npm run build

Development

Development environment requires docker.

# install and setup every language dependencies in parallel through docker
npm install

# run every language setup in parallel through docker
npm run setup

# run every language tests in parallel through docker
npm test