Dave Doolin

Aweber Super Simple is a plugin that will subscribe a user whenever 
he/she registers to your blog.
The AWeber Super Simple options page allows you to configure the plugin to: 
* Choose whether or not to display the optin checkbox. Users may register if optin isn’t shown, and will not added to autoresponder. 
* Choose a checked or unchecked default status for the optin checkbox on registration. 
* Provide a custom optin greeting message for visitors
This code base is at least once, possibly 3, 3 or more times removed from what was the original 
code base. Wherever or whenever the ultimate source, the base code is old in WordPress years. 
Current effort is to bring everything up to 2.8 coding standards before attempting any extensions.
<h3>Support</h3>
Initial functionality will be supported on a time-available basis.
Installation, configuration and further programming support may be 
available on a contract basis. Contact author with request.

Aweber Super Simple

AWeber Super Simple allows you to subscribe users to an AWeber autoresponder when they register on your blog. NOTE: ALPHA VERSION.  Be careful.

kolakube

Adding email signup forms to your blog has never been easier.
In 2 easy steps, connect to one of the listed email services below, or use your custom form code to begin placing email signup forms throughout your blog. It’s easy, just drag a Widget.
Kolakube Email Forms currently integrates with:
<ul>
<li>AWeber</li>
<li>MailChimp</li>
<li>ActiveCampaign</li>
<li>ConvertKit</li>
<li>Custom HTML Form Codes</li>
</ul>
NEW: <a href="https://kolakube.com/kolakube-email-forms-11/" rel="nofollow ugc">See what’s new in version 1.1</a>  · <a href="http://quick.as/vkoauz2l" rel="nofollow ugc">Watch this quick demonstration video →</a>
Kolakube Email Forms does its best to inherit your theme’s CSS styles and offers no design options. This strictly outputs email form codes and relies on your theme to style it (can easily be tweaked with CSS).
NOTE: more email services will be added soon. Please leave a review and tell me about your experience using this plugin! More features available in <a href="https://kolakube.com/marketers-delight/" rel="nofollow ugc">Marketers Delight</a>

Kolakube Email Forms

Connects to your email service provider in 2 easy steps so you can start displaying email signup form widgets throughout your site.

Aweber Super Simple vs Kolakube Email Forms