MailChimp

Company Overview
Email marketing service provider. Its 3.5 million users collectively send over 4 billion emails a month through its service. Features include unified customer profiles, personalization, automation, advanced analytics, flexible design options for teams of all sizes, full responsiveness, campaign archives, social sharing, mobile platforms, and email deliverability analytics.
Contact Info
Corporate Headquarters, The Landmark @ One Market, Suite 300 ,
San Francisco, CA, 94105, US