Title: Mailster reCaptcha
Author: EverPress
Published: <strong>13 janeiro, 2017</strong>
Last modified: 13 outubro, 2026

---

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![](https://ps.w.org/mailster-recaptcha/assets/banner-772x250.png?rev=3744772)

![](https://ps.w.org/mailster-recaptcha/assets/icon-256x256.png?rev=3744772)

# Mailster reCaptcha

 Por [EverPress](https://profiles.wordpress.org/everpress/)

[Baixar](https://downloads.wordpress.org/plugin/mailster-recaptcha.2.0.2.zip)

 * [Detalhes](https://br.wordpress.org/plugins/mailster-recaptcha/#description)
 * [Avaliações](https://br.wordpress.org/plugins/mailster-recaptcha/#reviews)
 *  [Instalação](https://br.wordpress.org/plugins/mailster-recaptcha/#installation)
 * [Desenvolvimento](https://br.wordpress.org/plugins/mailster-recaptcha/#developers)

 [Suporte](https://wordpress.org/support/plugin/mailster-recaptcha/)

## Descrição

**Mailster reCaptcha** adds [Google reCAPTCHA](https://www.google.com/recaptcha/)
spam protection to [Mailster](https://mailster.co/?utm_campaign=wporg&utm_source=wordpress.org&utm_medium=readme&utm_term=reCaptcha)
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](https://mailster.co/?utm_campaign=wporg&utm_source=wordpress.org&utm_medium=readme&utm_term=reCaptcha)**
> 4.0** or newer and free [Google reCAPTCHA](https://www.google.com/recaptcha/admin)
> 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

 1. Install and activate **Mailster reCaptcha** alongside Mailster.
 2. Create reCAPTCHA **v3** keys in the [Google reCAPTCHA admin console](https://www.google.com/recaptcha/admin).
 3. Enter your **Site Key** and **Secret Key** under **Newsletter  Settings  reCaptcha**.
 4. Enable captcha on the forms you want to protect (legacy form checkboxes in settings,
    or the **Enable reCaptcha** panel on each block form).
 5. 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](https://wordpress.org/plugins/mailster-cool-captcha/).
Addon overview: [Use reCaptcha with Mailster](https://mailster.co/addons/recaptcha/).

### Additional Info

This plugin requires the [Mailster Newsletter Plugin for WordPress](https://mailster.co/?utm_campaign=wporg&utm_source=wordpress.org&utm_medium=readme&utm_term=reCaptcha)**
4.0** or newer and [Google reCAPTCHA](https://www.google.com/recaptcha/admin) site
and secret keys. Protected form submissions are verified via Google’s reCAPTCHA 
API.

## Capturas de tela

[[

## Instalação

 1. Upload the entire `mailster-recaptcha` folder to the `/wp-content/plugins/` directory,
    or install from the WordPress plugins screen.
 2. Activate the plugin through the **Plugins** menu in WordPress.
 3. Make sure [Mailster](https://mailster.co/?utm_campaign=wporg&utm_source=wordpress.org&utm_medium=readme&utm_term=reCaptcha)
    4.0+ is installed and active.
 4. Register your site at [google.com/recaptcha/admin](https://www.google.com/recaptcha/admin)
    and create **reCAPTCHA v3** keys for your domain.
 5. Go to **Newsletter  Settings  reCaptcha**, enter the Site Key and Secret Key, and
    save.
 6. Enable reCAPTCHA on the subscription forms you want to protect:
 7.  * **Legacy forms:** select them on the same settings screen.
     * **Block forms:** edit the form and enable **Enable reCaptcha** in the form document
       settings.

## Perguntas frequentes

### Does this plugin work without Mailster?

No. Mailster reCaptcha is an addon for the [Mailster Newsletter Plugin](https://mailster.co/?utm_campaign=wporg&utm_source=wordpress.org&utm_medium=readme&utm_term=reCaptcha)
and requires Mailster **4.0** or newer.

### Do I need a Google account or reCAPTCHA keys?

Yes. You need free reCAPTCHA **site** and **secret** keys from the [Google reCAPTCHA admin console](https://www.google.com/recaptcha/admin).
Create keys for **reCAPTCHA v3** and add the domains where your forms are shown.

### Is this reCAPTCHA v2 or v3?

This addon uses **Google reCAPTCHA v3** (invisible / score-based). It does not show
the classic checkbox widget.

### Does it work with Mailster block forms?

Yes. For block forms, open the form in the editor and enable **Enable reCaptcha**
in the document settings panel. Legacy forms are enabled from **Newsletter  Settings
reCaptcha**.

### Is visitor data sent to a third party?

Yes. To verify a submission, the plugin sends the reCAPTCHA response token to Google’s
verification endpoint (`www.google.com/recaptcha/api/siteverify`). Google’s reCAPTCHA
service also loads in the browser for protected forms. See [Google’s reCAPTCHA documentation](https://developers.google.com/recaptcha/docs/v3)
for how the service works.

### Can I turn off reCAPTCHA for logged-in users?

Yes. Enable **Disable for logged in users** on the reCAPTCHA settings screen if 
you do not want captcha checks for users who are already logged in to WordPress.

### Where can I get support?

For Mailster and this addon, see [mailster.co](https://mailster.co/?utm_campaign=wporg&utm_source=wordpress.org&utm_medium=readme&utm_term=reCaptcha).
For key setup or reCAPTCHA behavior, use [Google’s reCAPTCHA docs](https://developers.google.com/recaptcha/).

## Avaliações

![](https://secure.gravatar.com/avatar/57e7d1870c117a4e7f33c0a3aca2a6eed84a8a671f6e7de363df71556bad22c5?
s=60&d=retro&r=g)

### 󠀁[Not working anymore](https://wordpress.org/support/topic/not-working-anymore-257/)󠁿

 [BestRanger](https://profiles.wordpress.org/bestranger/) 6 novembro, 2024

Developer just doesnt care.

![](https://secure.gravatar.com/avatar/cc5bdf38c6ca8ebe8992723cf85a8dc040d8eafe9998bf70a21abadf607b1971?
s=60&d=retro&r=g)

### 󠀁[Stop working](https://wordpress.org/support/topic/stop-working-33/)󠁿

 [ram108](https://profiles.wordpress.org/ram108/) 15 janeiro, 2024

It looks like this plugin is not working anymore, a lot of spam registration even
with reCaptcha activated.

![](https://secure.gravatar.com/avatar/6f2fad2ddd19c98cad4cb599c9ad1b20f56a0b737e524c73ef12c151ecdbb63a?
s=60&d=retro&r=g)

### 󠀁[It is not working.](https://wordpress.org/support/topic/it-is-not-working-32/)󠁿

 [Word2Media](https://profiles.wordpress.org/word2media/) 14 janeiro, 2024

Currently this plugin is not working.

![](https://secure.gravatar.com/avatar/2e46358454c62b7f062b7b2778533290269bab7a06c1bf0abd476a149f18885f?
s=60&d=retro&r=g)

### 󠀁[Works like it should!](https://wordpress.org/support/topic/works-like-it-should-17/)󠁿

 [Coalay](https://profiles.wordpress.org/chrisparksaz/) 12 fevereiro, 2018

Thanks for making this much-needed plugin. Works great. Definitely reduces spam 
and adds a nice checkbox to affirm humanity etc.

 [ Leia todas as 4 avaliações ](https://wordpress.org/support/plugin/mailster-recaptcha/reviews/)

## Colaboradores e desenvolvedores

“Mailster reCaptcha” é um programa de código aberto. As seguintes pessoas contribuíram
para este plugin.

Colaboradores

 *   [ EverPress ](https://profiles.wordpress.org/everpress/)
 *   [ Mailster Newsletter Plugin ](https://profiles.wordpress.org/mailster/)
 *   [ Xaver ](https://profiles.wordpress.org/xaverb/)

[Traduzir o “Mailster reCaptcha” para seu idioma.](https://translate.wordpress.org/projects/wp-plugins/mailster-recaptcha)

### Interessado no desenvolvimento?

[Navegue pelo código](https://plugins.trac.wordpress.org/browser/mailster-recaptcha/),
consulte o [repositório SVN](https://plugins.svn.wordpress.org/mailster-recaptcha/)
ou assine o [registro de desenvolvimento](https://plugins.trac.wordpress.org/log/mailster-recaptcha/)
por [RSS](https://plugins.trac.wordpress.org/log/mailster-recaptcha/?limit=100&mode=stop_on_copy&format=rss).

## Registro de alterações

#### 2.0.2

 * improved: packaging and release pipeline for WordPress.org

#### 2.0.1

 * fixed: issue with latest block forms plugin not shoing settings page
 * tested: up to WordPress 6.3

#### 2.0.0

 * Supports now Mailster Block Forms

#### 1.6

 * only output script if form has been rendered.

#### 1.5

 * updated file structure

#### 1.4.1

 * fixed: problem with confirmation if add on is enabled

#### 1.4

 * fixed: submitting form with with removed captcha field is no longer possible

#### 1.3

 * allow multiple forms on a single page (thanks to A. Grundner)
 * small code improvements

#### 1.2

 * added: support for reCpatcha API v3 (default)

#### 1.1.1

 * fixed: script tag not shown on HTML forms

#### 1.1

 * removed option for V1
 * added theme selection
 * added size selection

#### 1.0.1

 * fixed: issue where check box doesn’t get recognized

#### 1.0

 * initial release

## Meta

 *  Versão **2.0.2**
 *  Última atualização **22 horas atrás**
 *  Instalações ativas **1.000+**
 *  Versão do WordPress ** 6.0 ou superior **
 *  Testado até **7.1.3**
 *  Idioma
 * [English (US)](https://wordpress.org/plugins/mailster-recaptcha/)
 * Tags
 * [captcha](https://br.wordpress.org/plugins/tags/captcha/)[mailster](https://br.wordpress.org/plugins/tags/mailster/)
   [newsletter](https://br.wordpress.org/plugins/tags/newsletter/)[recaptcha](https://br.wordpress.org/plugins/tags/recaptcha/)
   [spam](https://br.wordpress.org/plugins/tags/spam/)
 *  [Visualização avançada](https://br.wordpress.org/plugins/mailster-recaptcha/advanced/)

## Classificações

 2 de 5 estrelas.

 *  [  1 avaliação com 5 estrela     ](https://wordpress.org/support/plugin/mailster-recaptcha/reviews/?filter=5)
 *  [  0 avaliação com 4 estrela     ](https://wordpress.org/support/plugin/mailster-recaptcha/reviews/?filter=4)
 *  [  0 avaliação com 3 estrela     ](https://wordpress.org/support/plugin/mailster-recaptcha/reviews/?filter=3)
 *  [  0 avaliação com 2 estrela     ](https://wordpress.org/support/plugin/mailster-recaptcha/reviews/?filter=2)
 *  [  3 avaliações com 1 estrelas     ](https://wordpress.org/support/plugin/mailster-recaptcha/reviews/?filter=1)

[Sua avaliação](https://wordpress.org/support/plugin/mailster-recaptcha/reviews/#new-post)

[Ver todas avaliações](https://wordpress.org/support/plugin/mailster-recaptcha/reviews/)

## Colaboradores

 *   [ EverPress ](https://profiles.wordpress.org/everpress/)
 *   [ Mailster Newsletter Plugin ](https://profiles.wordpress.org/mailster/)
 *   [ Xaver ](https://profiles.wordpress.org/xaverb/)

## Suporte

Tem algo a dizer? Precisa de ajuda?

 [Ver fórum de suporte](https://wordpress.org/support/plugin/mailster-recaptcha/)