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Data Theft Repackaged: A Case Study in Malicious Wrapper Packages on npm
The Socket Research Team breaks down a malicious wrapper package that uses obfuscation to harvest credentials and exfiltrate sensitive data.
mailchecker
Advanced tools
Cross-language temporary (disposable/throwaway) email detection library. Covers hundreds fake email providers.
The mailchecker npm package is used to validate email addresses and check if they belong to disposable email providers. This can be useful for preventing users from signing up with temporary email addresses that may be used for spam or fraudulent activities.
Validate Email Address
This feature allows you to check if an email address is valid and not from a disposable email provider. The `isValid` method returns a boolean indicating the validity of the email.
const mailchecker = require('mailchecker');
const email = 'example@example.com';
const isValid = mailchecker.isValid(email);
console.log(`Is the email valid? ${isValid}`);
Check Disposable Email
This feature allows you to specifically check if an email address is from a disposable email provider. The `isDisposable` method returns a boolean indicating whether the email is disposable.
const mailchecker = require('mailchecker');
const email = 'example@disposable.com';
const isDisposable = mailchecker.isDisposable(email);
console.log(`Is the email disposable? ${isDisposable}`);
The email-verifier package provides email verification and validation services. It checks the syntax, domain, and mailbox existence. Compared to mailchecker, it offers more comprehensive email validation features, including SMTP checks.
The disposable-email-domains package provides a list of disposable email domains. It is a simpler package compared to mailchecker, focusing solely on identifying disposable email domains without additional validation features.
The email-existence package checks if an email address exists by connecting to the mail server. It provides a more in-depth validation compared to mailchecker, which primarily focuses on identifying disposable emails.
Cross-language email validation. Backed by a database of over 55 000 throwable email domains.
FILTER_VALIDATE_EMAIL
for PHP)This will be very helpful when you have to contact your users and you want to avoid errors causing lack of communication or want to block "spamboxes".
Need to provide Webhooks inside your SaaS?
Need to embed a charts into an email?
It's over with Image-Charts, no more server-side rendering pain, 1 url = 1 chart.
https://image-charts.com/chart?
cht=lc // chart type
&chd=s:cEAELFJHHHKUju9uuXUc // chart data
&chxt=x,y // axis
&chxl=0:|0|1|2|3|4|5| // axis labels
&chs=873x200 // size
# import using the fully qualified name.
use Fgribreau\MailChecker;
// ...
echo MailChecker::isValid('myemail@yopmail.com');
Mailchecker public API has been normalized, here are the changes:
MailChecker(email)
-> MailChecker.isValid(email)
MailChecker($email)
-> MailChecker::isValid($email)
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:
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);
}
<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>
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 !');
}
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
require 'mail_checker'
unless MailChecker.valid?('myemail@yopmail.com')
fail('O RLY!')
end
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"));
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
; 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!")))
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 !")
}
Go
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.
$('td', 'table:last').map(function(){
return this.innerText;
}).toArray();
Array.prototype.slice.call(document.querySelectorAll('.entry > ul > li a')).map(function(el){return el.innerText});
... please add your own dataset to list.txt.
Just run (requires NodeJS):
npm run build
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
These amazing people are maintaining this project:
No sponsors yet! Will you be the first?
These amazing people have contributed code to this project:
Discover how you can contribute by heading on over to the CONTRIBUTING.md
file.
Unless stated otherwise all works are:
and licensed under:
v6.0.13 (2024/11/27 12:09 +00:00)
FAQs
Cross-language temporary (disposable/throwaway) email detection library. Covers hundreds fake email providers.
The npm package mailchecker receives a total of 361,283 weekly downloads. As such, mailchecker popularity was classified as popular.
We found that mailchecker demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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