You probably found this page because one of our subscribers used MailChimp to send you an email campaign, and you traced a link in the email back here to investigate. MailChimp is an email-marketing service that serves more than 12 million companies of all shapes and sizes, from all over the world. We send more than 1 billion emails every day, and we help our customers comply with spam laws and best practices so they can get their campaigns into their subscribers' inboxes.