MailChimp is an email service provider, and a very intriguing solution for all your email marketing needs. The system itself is very robust, with features such as:
A/B split testing
However, Mailchimp is extremely intuitive, and easy to get started with. Newsletter signups operate under a double opt-in philosophy to keep bounces down, and conversion high. Emails can be text only, clean and simple templates, or fully custom. It also has an “Inbox Inspector” tool for reviewing your emails in the most common clients, to ensure a consistent experience. MailChimp allows you to provide dynamic content to your subscribers based on their preferences, and you can personalize the emails using merge tags to display specific subscriber info. Lastly, MailChimp offers several integration solutions for your current site. The most basic solution is a semi-customizable form that can be added to any page needed.