Send Better Email
This module provides integration with MailChimp, a popular email delivery service. The module makes it easy for website users or visitors to control which of your email lists they want to be on (or off), lets you generate and send MailChimp email campaigns from your site, and lets you and your users view a history of emails they have been sent from MailChimp. More generally, it aspires to makes your email delivery world efficient and to make your user's email receipt and control simple and precise.
Features & Modules
The MailChimp core module provides all of the API integration functionality, and the ability to add your MailChimp API key and set a few settings. All of the rest of the important functionality is broken out into individual modules that provide specific features.