Single Opt-In AJAX Mailchimp Newsletter form for WordPress. You can switch between single opt-in and double opt-in. Use it as Widget or Shortcode.
The best free plugin to get more email subscribers. Beautiful opt-in forms that integrate with MailChimp, Constant Contact, AWeber, Campaign Monitor a
Integrate MailChimp into your e-commerce shop to manage users' subscription directly from your store. WooCommerce 2.4.x compatible.
ChimpMate is a MailChimp based email marketing plugin. Professional and Custom designs. Includes Lightbox, Slider, Widget, Add-on, Topbar and Flipbox
Drag and Drop interface. Tens of predefined fields, including Connect with Facebook and Google+. 37 languages. Responsive design. Double opt-in.
Capture new subscribers. Reward subscribers with custom downloads upon opt-in. Build unlimited lists. Import and export subscribers easily.