EverPress

Xaver

Mailster Newsletter Plugin

<blockquote>
<p>This Plugin requires <a href="https://mailster.co/?utm_campaign=wporg&utm_source=wordpress.org&utm_medium=readme&utm_term=Cool+Captcha" rel="nofollow ugc">Mailster Newsletter Plugin for WordPress</a></p>
</blockquote>
<p>Adds a Cool Captcha to your Mailster subscription forms</p>
<p>You may also try <a href="https://wordpress.org/plugins/mailster-recaptcha/" rel="ugc">Mailster reCaptcha™ for Forms</a></p>
<h3>Additional Info</h3>
<p>This Plugin requires <a href="https://mailster.co/?utm_campaign=wporg&utm_source=wordpress.org&utm_medium=readme&utm_term=Cool+Captcha" rel="nofollow ugc">Mailster Newsletter Plugin for WordPress</a></p>


Mailster Cool Captcha

Adds a Cool Captcha to your Mailster subscription forms

<p>Verifies your subscribers email addresses. Read more on the <a href="https://kb.mailster.co/reduce-false-signups-with-email-verification/?utm_campaign=wporg&utm_source=Email+Verify+for+Mailster&utm_medium=readme" rel="nofollow ugc">Mailster Knowledge base</a></p>
<p>This plugin is no longer needed since Mailster 3.0!</p>
<h3>Additional Info</h3>
<blockquote>
<p>This Plugin requires <a href="https://mailster.co/?utm_campaign=wporg&utm_source=Email+Verify+for+Mailster&utm_medium=readme" rel="nofollow ugc">Mailster Newsletter Plugin for WordPress</a></p>
</blockquote>


Mailster Email Verify

The plugin will reject the email address if there is no such domain, but the SMTP ping to see whether the actual email address exists or not doesn't work.
Without this, it's not really useful.

MX checking works, SMTP doesn't

Verifies your subscribers email addresses. Read more on the Mailster Knowledge base

Mailster Cool Captcha vs Mailster Email Verify