DesignSmoke

Anti-Spam Zapper will automatically remove spam comments and block spambots without annoying CAPTCHAs.
Protect your website from spam comments and automated spam using this free WordPress anti-spam plugin.
Features
<ul>
<li>Protect Comments</li>
<li>Block Spambots</li>
<li>Marks comments as spam, without deleting them, just-in-case there’s a false positive</li>
<li>Nothing to fill out, completely silent action</li>
</ul>
FAQ
<ul>
<li>Does this require javascript?</li>
<li>
Yes, however the vast majority of users have javascript enabled (over 99%). Users with javascript disabled will be shown a message, just to make sure nothing is lost.
</li>
<li>
Can I modify this plugin?
</li>
<li>Yes! The plugin is <a href="http://www.gnu.org/licenses/gpl-2.0.html" rel="nofollow ugc">licensed under the GPLv2 License</a>.</li>
</ul>
Upgrade to Pro
Want to protect your contact forms too? <a href="https://www.designsmoke.com/anti-spam-zapper-wordpress-plugin/" rel="nofollow ugc">Upgrade to Anti-Spam Zapper PRO by DesignSmoke</a> to stop all spam comments and form submissions on your WordPress website or WooCommerce store.

Anti-Spam Zapper for WordPress

Anti-Spam Zapper will automatically remove spam comments and block spambots without annoying CAPTCHAs. Protect your…

Fresent

FilterBounce Email Verifier is your shield against invalid emails. It integrates seamlessly with popular WordPress forms. Say goodbye to spam registrations and hello to cleaner email lists!
Key Features: 
– Real-time email verification. 
– Form validation for emails. 
– Detects invalid, temporary, spamtrap, disposable, role and catch-all addresses 
– All email providers for business/professional emails supported. 
– Works with most WordPress forms. 
– GDPR compliant.
Supported WordPress Forms: 
– WPForms 
– HappyForms 
– Ninja Forms 
– Fluent Forms 
– Gravity Form 
– Mail Mint Form 
– Contact Form 7 
– Elementor Forms 
– Forminator Forms 
– Formiddable Form 
– WordPress Comment Form 
– WooCommerce Checkout Form 
– Contact Form by BestWebSoft 
– Default WordPress Registration Form 
– Support for more forms will be added
Please visit https://filterbounce.com/ for detailed list of features and support.
<h3>Third-Party Service Usage</h3>
This plugin uses the Filter Bounce’s API service (https://filterbounce.com) to verify emails. 
API calls are made to Filter Bounce’s servers, to verify email addresses using the below endpoint.
<pre><code>API Endpoint: https://filterbounce.com/api/v1/
</code></pre>
By installing and activating this plugin, you are providing consent to the transmission of email addresses to above URLs for the email verication purpose.
We’re committed to your privacy as:
<ul>
<li>Emails are deleted after 15 days</li>
<li>We never use emails for marketing</li>
<li>All data is encrypted</li>
</ul>
The use of the FilterBounce Email Verifier service is subject to Fresent’s Terms of Service and Privacy Policy, available at:
<pre><code>Terms of Service: https://fresent.com/terms/
Privacy Policy: https://fresent.com/privacy/
</code></pre>
We encourage you to review above terms to understand how Filter Bounce handles and protects your data.

FilterBounce Email Verifier

Verifies email addresses in real-time during form submissions to prevent invalid, disposable, temporary, catch-all, free or spamtrap email addresses.

Anti-Spam Zapper for WordPress vs FilterBounce Email Verifier