Automatically pass newsletter subscription information from your OpenCart site to your MailChimp newsletter list (and vice versa) behind the scenes, making less work for you! Customers will be synced during standard registration, checkout registration, and when admins perform actions in the admin panel. This extension also includes a sidebar module, to allow non-customers to sign up to your list.
What customers say about MailChimp Integration Pro
Awesome extension! Has all the features need and works right out of the box. Actually I didn't want to use Mail Chimp, but with an extension programmed as thoroughly as this one I couldn't resist. Higly recommended!
Support is first class, they go above and beyond to help.