This WordPress plugin can add a sidebar widget for subscribing to MailChimp-powered newsletter. It can simply collects user emails and stores them to a preset personal MailChimp account.Features of MailChimp Widget:- Easy to use- AJAX-enabled, but degrades gracefully if Javascript isn't turned on- Encourages the collection of only information that you actually need (i.e., an email address) to send mailsRequirements:- ...

Using MailChimp API, MailChimp API Wrapper can send e-mail messages. XML_PRC requests can be sent to MailChimp API Web server to perform several types of operations with this PHP script. Currently it can manage campaigns, lists, accounts, subscribers, API keys, etc.. Requirements:- PHP 5.0 or higher