MailChimp is a Web service offering platform for e-mail marketing. It is easy to start, use and scale. In short we can design, send, and track HTML email campaigns/newsletters with simple tools. There are lot of things that makes us feel that MailChimp is the right choice for our needs. The list goes on with API to sync from inhouse sites/ applications, intuitive reports, integration with existing services like Facebook, Twitter and Google analytics, ability to create custom forms, etc. Of course we like MailChimp's humor as well.