Simple CRM is a WordPress plugin that lets you define custom fields to extend user profiles and it is also a framework for integration with all kind of CRM API webservices. MailChimp addon lets you sync the defined profile fields with a list using it’s API.
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Simple CRM MailChimp Addon

Simple CRM is a WordPress plugin that lets you define custom fields to extend user profiles and it is also a framework for integration with all kind of CRM API webservices. MailChimp Widget addon lets your users subscribe through a widget to list using it’s API.
Plugin sponsored by <a href="http://vivanista.com" rel="nofollow ugc">Vivanista.com</a>

Simple CRM MailChimp Widget Addon

Adds MailChimp Subscribe Widget to Simple CRM

Simple CRM MailChimp Addon vs Simple CRM MailChimp Widget Addon