Here is an Anti-Spam module for Backdrop CMS https://backdropcms.org/project/cleantalk
This module has been ported by an enthusiast CleanTalk user Richard Peacock. Thank you so much, Richard!
Instructions to get it live you will find by the link above. Have any questions? Just drop a comment in the section down below
We’ve extended protection against crawling personal data on public pages. Since version 6.55 plugin encodes phone numbers as well as emails on any public page in your WordPress.
Encoding works by two switches. Either you turn on global encoding for all content on the site,
WordPress console -> Settings -> Anti-Spam by CleanTalk -> Advanced Settings -> Encode contact data -> Encode phone numbers.Here are full manual how to use this option https://cleantalk.org/help/email-encode
Or use short code below to encode a specific phone number in article,
[apbct_encode_data] +1 111 222 33 44 [/apbct_encode_data]Here are more details for the short code https://cleantalk.org/help/using-shortcodes-hooks-to-encode-contact-data
Here is an example of encoded phone number,
We are happy to assist you at +1***********30.
That’s all, phone number is encoded and protected against crawling by spam bots!
Finally, In the Anti-Spam log track interactions (encoding contact data by real visitors) with contact data on a website. There you find date, time and location of visitors who saw your phone number on a site https://cleantalk.org/my/show_requests
Have a question? Just drop the comment in the form down below. Cheers!
We’ve added to Security by CleanTalk support of WP CLI commands. The list of commands,
Full guide with examples is here https://cleantalk.org/help/security-wp-cli
It works on plugins starting version 2.156 which has been released on May 19, 2025.
Have questions? Please drop us a message in the comment form down below.
We have protected one more contact form for WordPress, this is WP Forms lite,
Anti-Spam by CleanTalk (plugin) protects all kinds of submissions posted through this form against spambots and spam posted by real visitors (with some rate of false/negatives).
Anyway, to set up the protection follow steps,
*** Forbidden. Sender blacklisted. Anti-Spam by CleanTalk. ***
That’s all. Enjoy spam free website!
Please welcome Evgenii, our new team member! Evgenii is an experienced software developer in web applications field and ready to rock nuts for cleantalk.org.
Here are a few words Evgenii could say about himself and the very first days in the company,
Over the past few years, I’ve been interested in gaining experience as a digital nomad and exploring different cultures. In my free time, I enjoy camping, spending time outdoors, watching movies, and listening to music. I’m also passionate about topics like cosmology, cybersecurity, cryptocurrencies, decentralized networks, and playing musical instruments.
My favorite movies include Fight Club, The Hitchhiker’s Guide to the Galaxy, and The Dark Knight. As for books, I especially enjoy The Chronicles of Amber by Roger Zelazny and the works of Carlos Castaneda.
Whenever I get the chance, I like to stay active—my favorite sports are swimming, skateboarding, and football.
One of my key interests is cybersecurity. Over time, it has evolved from a hobby into a vital necessity for me. As the modern world becomes increasingly intertwined with the digital realm, the boundaries between the real and virtual worlds continue to blur, creating a single, interconnected reality. As a result, cybersecurity is no longer optional—it has become an essential part of everyday life for every modern person.
Unfortunately, this critical issue often receives insufficient attention, both from individuals and even some private companies. That’s why I’m especially grateful for the opportunity to combine my passion with hands-on experience at CleanTalk. I’m excited to contribute to solving the pressing challenges of cybersecurity alongside the CleanTalk team, gain valuable experience in the field, and continue growing professionally in this direction.
One of the first complex and engaging tasks I worked on at CleanTalk was measuring page loading speed. This task involved considering a variety of important factors to make well-informed decisions about optimizing performance and enhancing the user experience.
Another particularly interesting challenge was implementing React into the project to enable smooth rendering of page elements and further improve the user experience. This task was both technically demanding and rewarding, as it required integrating modern technologies into an existing live system—a non-trivial and highly valuable experience.
I plan to continue growing and developing in the field of cybersecurity together with the CleanTalk team. To gain more and more experience in this area. To try to improve the CleanTalk project, giving our users more and more confidence and positive experience in working with our products.
Free WordPress forms are not always 100% free, actually. WordPress catalog has hundreds of form plugins, though. We’ve collected top contact form plugins that are totally free or have a free version, not limited by time period.
All of the forms are absolutely compatible with Anti-Spam by CleanTalk spam protection giving you peace of mind without captchas or annoying puzzles.
Here are the top 5 free WordPress form plugins that combine usability with anti-spam protection.
With over 5 million active installations, Contact Form 7 is a no-frills, lightweight solution trusted by millions. It employs sophisticatedly modularized architecture and its original Schema-Woven Validation technology.
Features:
Download Contact Form 7 | Protect Contact Form 7 from spam
WPForms Lite is perfect for beginners. The drag-and-drop builder and ready-made templates make it one of the easiest free form plugins available.
Features:
Download WPForms | Protect WPForms from spam
Ninja Forms offers powerful customization in its free version, and its user-friendly builder is ideal for both beginners and developers.
Features:
Download Ninja Forms | Protect Ninja Forms from spam
Everest Forms is a lightweight yet powerful form plugin with a clean interface and plenty of flexibility – even in the free version.
Features:
Download Everest Forms | Protect Everest Forms from spam
Fluent Forms is designed to be fast, lightweight, and easy to use. The free version comes packed with features that are premium in other plugins.
Features:
Download Fluent forms | Protect Fluent forms from spam
Free WordPress form plugins need to be protected not least then the others. The right anti-spam solution for your forms not only protects your form from spam emails and messages, but also:
But don’t just take our word for it, check it out for yourself at cleantalk.org!
CleanTalk added spam protection for Gwolle Guestbook plugin using direct form integration. So in case, you prefer using this type of forms be sure to use the most effective Anti-Spam plugin. Read the guide below and learn 4 steps to protect all your contact forms from spam.
Once the CleanTalk Anti-Spam plugin is installed it starts to protect all of the existing forms on your WordPress website. It may not only be Gwolle Guestbook but also many others.
Download CleanTalk Anti-Spam plugin | Download Gwolle Guestbook
To install the Anti-Spam plugin, go to your WordPress admin panel → Plugins → Add New.
Then enter «CleanTalk» in the search box and click the Install button for «Spam protection, Anti-Spam, FireWall by CleanTalk».
After installing the plugin, click the «Activate» button.
After it is done go to the plugin settings and click the «Get Access Key Automatically» button. Then just click the «Save Settings» button.
That’s it! From now you How to completely protect your Gwolle Guestbook from spam.
You can test the work of Anti-Spam protection for your Gwolle Guestbook form by using a test email s @ cleantalk.org (without spaces). First, open the form in an Incognito browser tab. Fill in all the required form fields and send a form.
After submitting the form, you will see a block message about the block on the form submission.
Once again, this screen is only for spam bots, so don’t pay much attention to It’s view.
If you have any questions, add a comment and we will be happy to help you.
Create your CleanTalk account – Register now and protect your forms from spam in 5 minutes.
The protection works only for website visitors, not for website admins. Be sure to test the form protection using Incognito mode.
Discover the complete list of CleanTalk Anti-Spam plugin features here.
I’m glad to announce our experienced developers added spam protection to Anti-Spam by CleanTalk for Leaky Paywall and HubSpot users!
The protection works in this way,
To active protection for both services, simply install Anti-Spam by CleanTalk for WordPress,
https://cleantalk.org/help/install-wordpress
Make sure you are using at least 6.50 version of our plugin.
Have any questions? Drop a message in the comment form down below!
Have fun in promoting your business online!
CleanTalk added spam protection for Newsletter plugin using direct form integration. So in case, you prefer using this type of forms be sure to use the most effective Anti-Spam plugin. Read the guide below and learn 4 steps to protect all your contact forms from spam.
Once the CleanTalk Anti-Spam plugin is installed it starts to protect all of the existing forms on your WordPress website. It may not only be Newsletter but also many others.
Download CleanTalk Anti-Spam plugin | Download Newsletter
To install the Anti-Spam plugin, go to your WordPress admin panel → Plugins → Add New.
Then enter «CleanTalk» in the search box and click the Install button for «Spam protection, Anti-Spam, FireWall by CleanTalk».
After installing the plugin, click the «Activate» button.
After it is done go to the plugin settings and click the «Get Access Key Automatically» button. Then just click the «Save Settings» button.
That’s it! From now you How to completely protect your Contact Forms from spam.
You can test the work of Anti-Spam protection for your Contact Forms by using a test email s @ cleantalk.org (without spaces). First, open the form in an Incognito browser tab. Fill in all the required form fields and send a form.
After submitting the form, you will see a block message about the block on the form submission.
Once again, this screen is only for spam bots, so don’t pay much attention to It’s view.
If you have any questions, add a comment and we will be happy to help you.
Create your CleanTalk account – Register now and protect your forms from spam in 5 minutes.
The protection works only for website visitors, not for website admins. Be sure to test the form protection using Incognito mode.
Discover the complete list of CleanTalk Anti-Spam plugin features here.
CleanTalk added spam protection for Awesome Support using direct form integration. So in case, you prefer using this type of forms be sure to use the most effective Anti-Spam plugin. Read the guide below and learn 4 steps to protect all your contact forms from spam.
Once the CleanTalk Anti-Spam plugin is installed it starts to protect all of the existing forms on your WordPress website. It may not only be Awesome Support but also many others.
Download CleanTalk Anti-Spam plugin | Download Awesome Support
To install the Anti-Spam plugin, go to your WordPress admin panel → Plugins → Add New.
Then enter «CleanTalk» in the search box and click the Install button for «Spam protection, Anti-Spam, FireWall by CleanTalk».
After installing the plugin, click the «Activate» button.
After it is done go to the plugin settings and click the «Get Access Key Automatically» button. Then just click the «Save Settings» button.
That’s it! From now you How to completely protect your Contact Forms from spam.
You can test the work of Anti-Spam protection for your Contact Forms by using a test email s @ cleantalk.org (without spaces). First, open the form in an Incognito browser tab. Fill in all the required form fields and send a form.
After submitting the form, you will see a block message about the block on the form submission.
If you have any questions, add a comment and we will be happy to help you.
Create your CleanTalk account – Register now and protect your Contact Forms from spam in 5 minutes
The protection works only for website visitors, not for website admins. Be sure to test the form protection using Incognito mode.
Discover the complete list of CleanTalk Anti-Spam plugin features here.