內容簡介
Mailster reCaptcha 外掛為 Mailster 郵件訂閱表單添加 Google reCAPTCHA 垃圾郵件防護，使用 reCAPTCHA v3 提供低摩擦的驗證，能有效阻擋機器人註冊和假訂閱者，保護 Mailster 名單的純淨性。
【主要功能】
• 使用 reCAPTCHA v3 提供無障礙驗證
• 伺服器端驗證，防止跳過驗證
• 自訂錯誤訊息以提供清晰反饋
• 可選擇對已登入用戶跳過 reCAPTCHA
• 支援在多個表單上載入 reCAPTCHA 腳本
外掛標籤
開發者團隊
原文外掛簡介
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.
This plugin requires Mailster 4.0 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
This plugin requires the Mailster Newsletter Plugin for WordPress 4.0 or newer and Google reCAPTCHA site and secret keys. Protected form submissions are verified via Google’s reCAPTCHA API.
