Este plugin no se ha probado con las últimas 3 versiones mayores de WordPress. Puede que ya no tenga soporte ni lo mantenga nadie, o puede que tenga problemas de compatibilidad cuando se usa con las versiones más recientes de WordPress.

Email Checker for Contact Form 7


This plugin enables Contact Form 7 users to check their client’s email addresses before accepting their messages via the contact form which stops spam and promotional emails from your inbox. It uses Emails Checker real-time email validation service to check if an email address valid or not in order to reduce invalid inboxes. It will only allow a valid email address users to send you email addresses. You can sign up for a free API Access key at to using this plugin.

Note: Contact Form 7 must be installed and activated before using this Email Checker for Contact Form 7.

Key Features

  • DNS validation, including MX record lookup
  • Disposable email address detection realtime
  • Misspelled domain detection
  • Email Syntax verification (IETF/RFC standard conformance)
  • Mailbox existence checking
  • Catch-All Testing
  • Greylisting detection
  • SMTP connection and availability checking

Enable you to block the users from message sending if failed invalidation.
This plugin needs an Emails-Checker.NET API key to work. You can get it from here.


Our Plugin will automatically check your contact form emails syntax FREE. Only SMTP Checks will cost credit.


  • Email Checker in Action
  • Email Checker Settings Page
  • Email Checker API Credits and Statics


Manual Installation

  1. Unzip and upload the email-checker-for-cf7 folder to the /wp-content/plugins/ directory.
  2. Activate the Email Checker for Contact Form 7 plugin through the ‘Plugins’ menu in WordPress.
    1.Configure the plugin by going to Settings > Emails Checker for CF7.
  3. Signup for a account (First 250 smtp credits are free every month).
  4. Login, copy, and paste your public API key to Settings > Emails Checker for CF7 page.

Preguntas frecuentes

How many Emails I can check?

Our Free Plan will give you 250 SMTP Credits for free to check SMTP Status.
If you have more than 250 Contact Form Submission per month check our affordable pricing at

Do I have to do any changes in my form?

Our plugin is very simple to use. Just enter your API Access key are you are done. The plugin will automatically filter all Contact Form 7 Emails

What if I ran out of credits?

If you run out of credits our plugin will stop checking emails. Your Contact form functionality will not stop.


22 de enero de 2022 1 respuesta
This is not a verifier of email in real time. Don't waste your time if that is what you are looking for.
22 de octubre de 2020
I was very frustrated by getting spam bot emails from my website's contact forms. Then I realized the bots are not using real emails in the contact form. So filtering invalid emails can solve the problem I taught and it really did. Now I only get valid and important emails and messages from my website.
Leer todas las 2 reseñas

Colaboradores y desarrolladores

Este software es de código abierto. Las siguientes personas han contribuido a este plugin.


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Registro de cambios


Initial release.


Connectivity Issue Fixed.
Added More Security Factors.


Fixed minor field issues


Addeded Newer version of Emails Checekr Api
New Block emails on Errors option


  • API Updates
  • Minor CSS and Form security Improved


(Coming Soon)
– Invisible Captcha
– Ajax Validation
– 10+ Contact Forms Providers Support