Scoria Labs GmbH

CaptchaFox defends and safeguards your website against automated attacks such as account takeover, spam, scalping, and web scraping, while adhering to EU data protection regulations.
It utilizes a variety of data signals and challenges to verify the authenticity of the user without the use of cookies or trackers. 
The challenges have low friction and are easily solvable for humans, but difficult for bots. With the one-click challenge, legitimate users don’t even know they’re being challenged.
This plugin comes with out-of-the-box support for popular form plugins, such as Contact Forms 7, WPForms, Woocommerce, Mailchimp, and more. Therefore, no developer experience is required.
To get started, login or create an account at <a href="https://portal.captchafox.com/" rel="nofollow ugc">portal.captchafox.com</a> and locate your keys. 
See the available <a href="https://captchafox.com/pricing" rel="nofollow ugc">plans and pricing</a> for more advanced features and additional support.
<h3>Supported Forms and Plugins</h3>
<ul>
<li>WordPress Login</li>
<li>WordPress Registration</li>
<li>WordPress Password Reset</li>
<li>WordPress Comments</li>
<li>Elementor Forms</li>
<li>Gravity Forms</li>
<li>WP Forms Lite</li>
<li>Contact Form 7</li>
<li>Ninja Forms</li>
<li>Ninja Forms Multi Step</li>
<li>Woocommerce Checkout</li>
<li>Woocommerce Login</li>
<li>Woocommerce Registration</li>
<li>Woocommerce Password Reset</li>
<li>Mailchimp for WordPress</li>
<li>Forminator</li>
<li>BBPress New Topic</li>
<li>BBPress Reply</li>
<li>Otter Blocks</li>
<li>Fluent Forms</li>
<li>Avada Forms</li>
</ul>
<h3>Privacy Notices</h3>
CaptchaFox is compliant with various privacy laws, such as GDPR, CCPA, and others.
This plugin does not use cookies, track users, store personal data or communicate with external services that are not required for verification.
Once the plugin is activated, the CaptchaFox service may receive the user’s IP address and browser vendor data while protecting enabled pages. However, CaptchaFox is designed to reduce the use of data and to dispose of it as soon as the verification request is processed.
To learn more, please read the privacy policy at <a href="https://captchafox.com/privacy" rel="nofollow ugc">captchafox.com/privacy</a>.

CaptchaFox for WordPress


When activate a plugin, you could see a settings with "Configure the settings for the CaptchaFox widget. Don't have a site key? Click here to create an account". And it linked to a dead link "portal.captchafox.com" (not working URL).



This plugin has too simple settings, and no helpful document to make it works.



2 first 5 stars reviews seems was fake by their team which violates a rule of WordPress community.


Not helpful!

CaptchaFox is an easy-to-use and GDPR compliant bot protection service. Protect your WordPess forms from malicious bot traffic!

zerobounce

Need an email validation tool to block invalid and high-risk emails on your WordPress website?
The ZeroBounce email verification plugin assists users by validating email addresses entered into your registration forms, comments sections, eCommerce shops, and more. Install the plugin, connect your API key, and select the forms you want to monitor with email validation.
<h3>Key Features</h3>
<ul>
<li>Automated real-time email validation – Automatically prevent selected email types from creating accounts, leaving comments, or signing up</li>
<li>Detect more than 30+ email address types – Including invalid, abuse, disposable, spam trap, toxic domains, catch-all, and more</li>
<li>Choose what to accept – Create your own rules for email validation and disallow emails based on status</li>
<li>Email verification for 9 form types – Easily select which forms you want to protect with email validation</li>
<li>Fast manual email validation – Verify any email address in the tools section using our interactive form</li>
<li>Email validation API logs – Keep track of monthly email verifications, including status, sub-status, IP, date, and credits used</li>
</ul>
<h3>Benefits</h3>
<ul>
<li>Keep your email list clean & accurate</li>
<li>Reduce your email bounce rate</li>
<li>Boost your inbox placement</li>
<li>Protect your email sender reputation</li>
<li>Improve email deliverability</li>
<li>Eliminate fraudulent, untrustworthy shoppers</li>
<li>Block spammers and spoofers</li>
<li>Keep your comments section clean</li>
</ul>
<h3>Supported Forms/Plugins</h3>
<ul>
<li>Contact Form 7</li>
<li>WPForms</li>
<li>Ninja Forms</li>
<li>Formidable Forms</li>
<li>WooCommerce</li>
<li>WordPress Post Comments</li>
<li>WordPress Registration</li>
<li>MC4WP: Mailchimp for WordPress</li>
<li>Gravity Forms</li>
<li>Fluent Forms</li>
<li>WS Forms</li>
<li>Mailster Forms</li>
<li>Forminator Forms</li>
</ul>
And more support is being added gradually.

ZeroBounce Email Verification & Validation


I have tested this plugin on several of my personal and business websites, it's awesome. No more spam and fake signups. Service pricing is also decent. Recommended.


Excellent in blocking SPAM


You have a problem with NF form validation. It detects html fields that contains emails (eg mailto links) as email fields and validates those.



if (!empty($value) && is_string($value) && preg_match('/@.+\./', $value) && !str_contains($value, "\n") && !str_contains($value, '\n')) {// rest of the code}



Your approach needs to be changed to:



if (!empty($value) && is_string($value) && preg_match('/@.+\./', $value) && !preg_match('/mailto:/i', $value)) {  $ninjaForm = new Zerobounce_Email_Validator_Form_Public('ninjaforms', $form_data['id']);   // rest of the code}



This should be safer to validate only email addresses (or use a better regex).


Ninja Forms problem

ZeroBounce validates emails on your WordPress site in real-time, blocking invalid and risky emails to improve deliverability and reduce bounce rates.

CaptchaFox for WordPress vs ZeroBounce Email Verification & Validation