MailChimp for WordPress, the absolute best. Subscribe your WordPress site visitors to your MailChimp lists, with ease.
Create beautiful optin forms with ease. Choose a form design, customize it, and add your form to your blog with a simple mouse-click.
MailChimp WD is a functional plugin developed to create MailChimp subscribe/unsubscribe forms and manage MailChimp lists from your WordPress site.
WP Newsletter Subscription is an excellent plugin to boost up your mailchimp subscribers list.