Human Made

Maor Chasen

Mad Mimi Email Marketing

Miriam Schwab

Rebecca Markowitz

The Official Mad Mimi Signup Form plugin makes it easy to grow your subscribers! Use this plugin to integrate your sign up forms into your WordPress site.
Once the plugin is activated, you can select and insert any of your Mad Mimi webforms right into your site by using a widget, shortcode, or template tag. Setup is easy; in Settings, simply enter your account email address and API key (found in your <a href="http://help.madmimi.com/where-can-i-find-my-api-key/" rel="nofollow ugc">Mad Mimi account</a> area), and you’re all set.
Official Mad Mimi Forms plugin features:
<ul>
<li>Automatically add new forms for users to sign up to an email list of your choice</li>
<li>Insert unlimited signup forms using the widget, shortcode, or template tag</li>
<li>Use quick links to edit and preview your form in Mad Mimi</li>
</ul>

Mad Mimi Signup Forms

Add the Mad Mimi webform to your WordPress site! Easy to set up, the Mad Mimi plugin allows your site visitors to subscribe to your email lists.

EverPress

Xaver

Mailster Newsletter Plugin

Integrates Mailster Newsletter Plugin with Gravity Forms to subscribe users with a Gravity Form. 
Requires the Mailster Newsletter plugin and the Gravity Forms plugin
<blockquote>
This Plugin requires <a href="https://mailster.co/?utm_campaign=wporg&utm_source=wordpress.org&utm_medium=readme&utm_term=Gravity+Forms" rel="nofollow ugc">Mailster Newsletter Plugin for WordPress</a>
</blockquote>

Mailster Gravity Forms

Integrates Mailster Newsletter Plugin with Gravity Forms to subscribe users with a Gravity Form.

Mad Mimi Signup Forms vs Mailster Gravity Forms