Easily add a newsletter sign-up form to your Web site or blog, then run email marketing and SMS campaigns with MailUp.
ChimpMate is a MailChimp based email marketing plugin. Professional and Custom designs. Includes Lightbox, Slider, Widget, Add-on, Topbar and Flipbox
An easy way to place a GetResponse form on your WordPress site.
An easy way to place a Aweber form on your WordPress site.
An easy way to place a Mailchimp form on your WordPress site.
This plugin allow admin to create user signup form to render on front end using drag and drop easy admin panel
Drag and Drop interface. Tens of predefined fields, including Connect with Facebook and Google+. 37 languages. Responsive design. Double opt-in.
WordPress KV reCaptcha plugin will help you to filter spam registrations and help you to prevent brute force attack
This plugin helps block bogus registrations by allowing a custom registration field and answer.