RackForms Express For WordPress is a free and unlimited web form builder.
Create beautiful optin forms with ease. Choose a form design, customize it, and add your form to your blog with a simple mouse-click.
The Official INinbox Sign Up Form plugin makes it easy to grow your subscribers! Integrate your newsletter sign up forms in your WordPress site.
Magic Action Box let's you display professional looking opt-in forms and feature boxes in your WordPress site.
Easily add your Podio Webforms anywhere in WordPress via shortcode.
Allows you to install an AWeber web form on your WordPress blog and lets visitors subscribe to your list when commenting or registering on your blog.
RSS link for this tag.