Send custom email into Mail Chimp List Programmatically in magento

If you have custom collection and you wish to send it into mailchimp , Below if code that help you.

       $defaultList = Mage::getStoreConfig(Ebizmarts_MageMonkey_Model_Config::GENERAL_LIST, 1);
       $mergeVars = array(
                            'EMAIL' => 'santoshmeets@gmail.com',
                            'FNAME' => 'Santosh',
                            'LNAME' => 'Yadav',
                            'CGROUP' => 'General'
        );
         Mage::getSingleton('monkey/api')->listSubscribe($listId, $email, $mergeVars, 'html', false, TRUE);

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