Active installations1K+Adoption metric — not a quality score
WordPress.org rating2.0 / 5 from 4 ratings
Official packageDirect from WordPress.org
Repository metrics are context, not quality scores. Active installations measure adoption and can strongly reflect a plugin’s age and historical popularity. Ratings, recent updates and “Tested up to” metadata also do not guarantee modern code, error-free operation, security, feature completeness or suitability for a particular site. Why active installs don’t tell the whole story →
WP PlugIndex currently records Mailster reCaptcha version 2.0.2 as active, updated 20d ago and tested up to WordPress 7.1.
Overview
About this plugin
Mailster reCaptcha adds Google reCAPTCHA spam protection to Mailster newsletter subscription forms. It uses reCAPTCHA v3, so visitors get a low-friction check instead of a checkbox challenge, while failed verifications are blocked on the server before a signup is accepted.
Use it when bot signups, fake subscribers, or newsletter form spam are polluting your Mailster lists.
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0 or newer and free Google reCAPTCHA site and secret keys. Form submissions send a reCAPTCHA response token to Google for verification.
Why use Google reCAPTCHA with Mailster?
Stop newsletter signup spam — Verify each protected form submission with Google before Mailster accepts the subscriber.
reCAPTCHA v3 — Invisible, score-based protection that runs in the background without a “I’m not a robot” checkbox.
Mailster block forms and legacy forms — Enable captcha per block form in the form editor, or select legacy forms under Newsletter settings.
Server-side verification — Tokens are checked with Google’s siteverify API so clients cannot skip the captcha by removing fields.
Custom error message — Show clear feedback when verification fails.
Optional skip for logged-in users — Disable reCAPTCHA for users who are already signed in to WordPress.
Loads only when needed — The reCAPTCHA script is enqueued for forms that have captcha enabled, including multiple forms on one page.
How it works
Install and activate Mailster reCaptcha alongside Mailster.
Create reCAPTCHA v3 keys in the Google reCAPTCHA admin console.
Enter your Site Key and Secret Key under Newsletter → Settings → reCaptcha.
Enable captcha on the forms you want to protect (legacy form checkboxes in settings, or the Enable reCaptcha panel on each block form).
On submit, the plugin sends the token to Google and rejects the signup if verification fails.
Prefer a non-Google captcha? You may also try Mailster Cool Captcha for Forms. Addon overview: Use reCaptcha with Mailster.
Additional Info
0 or newer and Google reCAPTCHA site and secret keys. Protected form submissions are verified via Google’s reCAPTCHA API.
WordPress.org metadata
Plugin tags
Topics listed for this plugin in the WordPress.org directory.
captcha
mailster
newsletter
recaptcha
spam
Compatibility & maintenance
Compatibility & maintenance
Tested with WP 7.1
Marked as tested with the current WordPress 7.1 release.
Current WordPress releaseWordPress 7.1
WordPress.org Tested up to7.1
Minimum requirementsWordPress 6.0 · PHP not listed
Update activity13 Oct 202620d ago
“Tested up to” is directory metadata supplied by the plugin author. WP PlugIndex does not turn an older declaration into a claim that the plugin is incompatible.
Changes recorded by WP PlugIndex
Recent tracked changes
Version2.0.1→2.0.2
WordPress compatibility6.5.10→7.1.3
Tracking & source
WP PlugIndex tracks public WordPress.org directory metadata and records selected version, compatibility and availability changes as they are detected.
