WordPress plugin alternatives

Alternatives to Mailster Cool Captcha

Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.

Relevant replacements

WordPress plugins with similar use cases

Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.

Protect Mailster newsletter signup forms from spam with Google reCAPTCHA v3.

★ 2.0WP 7.1.3PHP not listedUpdated 20d ago
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Lightweight, self-hosted captcha field for Fluent Forms — image, math and question/answer challenges. No external services, no tracking.

★ 5.0WP 7.0.4PHP 7.4Updated 3mo ago
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Image CAPTCHA, honeypot and accessibility spam blocking for Gravity Forms, CF7, WPForms, Formidable, Elementor, WooCommerce, comments, and login.

★ 0.0WP 7.0.4PHP 7.4Updated 5mo ago
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Connect Gravity Forms to Mailster with field mapping, mailing list assignment, conditional signup, and double opt-in.

★ 4.3WP 7.1.3PHP not listedUpdated 15d ago
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Math CAPTCHA for CF7, WPForms, and any HTML form. Zero config — install, add shortcode or use auto inject from settings.

★ 0.0WP 7.1PHP 7.4Updated 1mo ago
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Self-hosted image CAPTCHA and silent honeypot for Login, Registration, Lost Password, and Comments forms. No API keys, no external services.

★ 0.0WP 7.1PHP 7.4Updated 2mo ago
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Self-hosted ALTCHA proof-of-work CAPTCHA via GateCHA. Protects WordPress forms without cookies, fingerprinting, or third-party services.

★ 0.0WP 7.1.3PHP 7.4Updated 9d ago
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