MailChimp is a widely used Mailng List delivery and support service.
http://www.mailchimp.com
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Get access to data on 2,824,314 websites that are MailChimp Customers. We know of 877,736 live websites using MailChimp and an additional 1,946,578 sites that used MailChimp historically and 517,511 websites in the United States.
Get a list of 2,824,314 websites using MailChimp which includes location information, hosting data, contact details, 877,736 currently live websites and an additional 998,773 domains that redirect to sites in this list. 1,946,578 sites that used this technology previously and 517,511 websites in the United States currently using MailChimp.