NoParam

NoParam Email Validation & Anti-Spam Prevention is a powerful plugin designed to ensure that your website’s email list is clean, legitimate, and free from spam. By integrating advanced email verification technology and spam prevention features, this plugin helps you protect your email sender reputation, improve deliverability, and engage with real users. Keep your site free of fake or disposable email addresses and safeguard your communications from spam and invalid sign-ups.
<h3>Features</h3>
<ul>
<li>Real-time email validation – Ensures only valid, legitimate emails are submitted. </li>
<li>Smart Email Suggestions – Detects and suggests corrections for common typos (e.g., “gmal.com” → “gmail.com”). </li>
<li>Spam Prevention & Fake Email Blocking: Safeguards your site from disposable, role-based, or temporary emails.</li>
<li>Improves Email Deliverability: Helps protect your sender reputation and ensures higher inbox placement.</li>
<li>Privacy-focused: No tracking, no storing, no reselling </li>
<li>Easy API integration for developers</li>
</ul>
<h3>Supported Forms</h3>
<ul>
<li>Contact Form 7 </li>
<li>WPForms </li>
<li>WordPress Registration Page </li>
<li>WordPress Post Comments </li>
<li>More integrations coming soon!</li>
</ul>
<a href="https://noparam.com" rel="nofollow ugc">Get your API key for Free</a>
<h3>External services</h3>
This plugin connects to NoParam’s email validation API to check the validity of email addresses submitted through forms.
NoParam’s Email Validation API uses advanced algorithms to detect fake, disposable, and temporary emails, ensuring the highest level of accuracy and reducing the chances of spam or bounce-back emails.
<ul>
<li>Service Used: NoParam Email Validation API – <a href="https://noparam.com" rel="nofollow ugc">Free Email Checker</a></li>
<li>Data Sent: The plugin sends email addresses entered in form fields to the NoParam API for validation. </li>
<li>Why: This is required to determine whether an email address is valid, invalid, or risky. </li>
<li>When: This occurs when users submit forms that are configured to use the validation service. </li>
<li>Privacy & Terms:
<ul>
<li><a href="https://noparam.com/privacy" rel="nofollow ugc">Privacy Policy</a> </li>
<li><a href="https://noparam.com/terms" rel="nofollow ugc">Terms of Service</a> </li>
</ul>
</li>
<li>Documentation:
<ul>
<li><a href="https://docs.noparam.com" rel="nofollow ugc">API Docs</a></li>
</ul>
</li>
</ul>

NoParam Email Validation – Email Verification & Anti-Spam Prevention

NoParam offers real-time email validation for WordPress to prevent fake signups and spam, improving email deliverability.

Kalpraj Solutions

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 emails-checker.net to using this plugin.
Note: Contact Form 7 must be installed and activated before using this Email Checker for Contact Form 7.
<h4>Key Features</h4>
<ul>
<li>DNS validation, including MX record lookup</li>
<li>Disposable email address detection realtime</li>
<li>Misspelled domain detection</li>
<li>Email Syntax verification (IETF/RFC standard conformance)</li>
<li>Mailbox existence checking</li>
<li>Catch-All Testing</li>
<li>Greylisting detection</li>
<li>SMTP connection and availability checking</li>
</ul>
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 <a href="https://emails-checker.net/#pricing/" title="Emails-Checket.net" rel="nofollow ugc">here</a>.
Note:
<blockquote>
Our Plugin will automatically check your contact form emails syntax FREE. Only SMTP Checks will cost credit.
</blockquote>

Email Checker for Contact Form 7

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.

Really Good plugin for contact form 7

Emails Checker will allow you to avoid spam email inboxes and spam contact form filling by verifying the user's email address using emails-checke …

NoParam Email Validation – Email Verification & Anti-Spam Prevention vs Email Checker for Contact Form 7