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  1. Home
  2. Plugins
  3. Email Filter
  4. MailboxValidator Email Validator
MailboxValidator Email Validator icon

MailboxValidator Email Validator

Email verification for WordPress forms. Block disposable, block spam, block invalid email, block free email and role-based email.

By MailboxValidator·Email Filter·Free
1(1 reviews)
·20 active installs·Updated 3 months ago
DownloadCompare

As of April 2026, MailboxValidator Email Validator is a WordPress email filter plugin with 20 active installations and a 1/5 rating from 1 reviews. It has been downloaded 10K+ times in total. Requires WordPress false+ and PHP false+. Available on WordPress.org since 2019. Top alternative: String Replacer.

1/51 reviews
20active installs
10K+total downloads
7 yearssince 2019

Overview

This email validation plugin helps you to block disposable email, free email, invalid email or role-based email from using your services or input form.

It helps to block spam, temporary emails and invalid email address messing around your site. You don’t have to master the hard part of adding shortcode into page source to use this plugin, but to activate, configure and you’re ready to prevent all spam signups from invalid email addresses.

You can sign up for a free API key at mailboxvalidator.com, that will allow you to validate up to 300 emails every month for free!

Supported Plugins

  • Contact Form 7
  • MailChimp
  • Formidable forms
  • WooCommerce
  • JetPack comments and contact form
  • Profile Builder
  • Ultimate Member registration form
  • Users Ultra registration form
  • Theme My Login
  • WP-Members
  • Paid Members…
Read full description on WordPress.org

Screenshots

Ratings & Reviews

11 reviews
5 ★
0
4 ★
0
3 ★
0
2 ★
0
1 ★
1

Compatibility

WordPressfalse+ requiredTested up to 6.9.4
PHPfalse+ required

Top Alternatives to MailboxValidator Email Validator

String Replacer icon
String Replacer
5100 installsUpdated 3 months ago
ViewCompare
GEV Email Validator icon
GEV Email Validator
00 installsUpdated 5 years ago
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View all email filter plugins →

Frequently Asked Questions

Changelog

1.7.1

  • Tested up to WordPress 6.9.
View full changelog on WordPress.org

Contributors

MailboxValidatorMailboxValidator
Plugin Info
Version
1.7.1
Last Updated
Dec 11, 2025
WP Requires
false+
Tested Up To
6.9.4
PHP Requires
false+
Active Installs
20
Downloads
10K+
Added
Apr 19, 2019
Business
Free

Tags

email filteremail verifyemail checkerform validationemail validation

Developer

M
MailboxValidator
2 plugins0.0M+ total installs
View all plugins →

Quick Compare

MailboxValidator Email Validator vs String Replacer→MailboxValidator Email Validator vs GEV Email Validator→

Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.