The MailChimp plugin allows you to quickly and easily add a signup form for your MailChimp list.
Adds a WordPress widget that allows your users to sign up for your MailChimp mailing list.
Easily add an email signup button to your Tumblr pages
Integrate forum registration with MailChimp list subscription
API integration, list synchronization, subscription forms, campaign creation, and sending site emails via Mandrill.
Sync your WordPress user user data with your MailChimp mailing list. Create campaigns from blog posts.
joomlamailer is a full API integration for Joomla 1.5 & 1.6. Manage almost all aspects of your MailChimp campaigns.
Sign your WordPress visitors up for multiple MailChimp lists.
Chimp Your Joomla! is a plugin that automatically adds users to your account during registration.
Seamlessly integrates the WordPress Registration and Comment forms with MailChimp
Easily create a custom Coming Soon Page in minutes that will help your Website Launch become a Success.
Email Marketing Framework supports multiple lists and synchronization.
wpMandrill sends emails that are generated by WordPress through Mandrill, a transactional email engine from MailChimp.
Squarespace 6 forms integrate easily with MailChimp lists.
WP MailChimp Plugin allow to create unlimited subscription forms using easy wizard.
Integrate most powerful Bulletin Board (vBulletin) with Mailchimp
Easily add a MailChimp subscription option to your ExpressionEngine site.
Create Joomla! newsletter forms using the RSform!Pro - MailChimp Plugin.
Create MailChimp campaigns with wordpress plugin.
The YIKES, Inc. MailChimp extender allows you to easily add a MailChimp signup form to a page or post.
Plugin for WordPress to allow commenters to subscribe to MailChimp lists.
MailChimp subscribe boxes... Quickly. Create and publish a MailChimp subscribe box in 60 seconds using QuickChimp!
CMC is a Joomla extension that integrates with the MailChimp API.
Add Vitrue's MailChimp module and have Facebook fans sign up for your newsletter in seconds.
Add a content strategy to your marketing efforts.