class Class_Module_Model_Email extends Mage_Core_Model_Email {
    public function sendMail() {
        //block setup
        $block     = Mage::app()->getLayout()->getBlockSingleton('module/form');
        $blockHtml = $block->getEmailHtml();

        //smtp setup
        $smtpPort = 465;
        $smtpHost = 'smtp.gmail.com';
        $smtpUser = 'example@domain.co.uk';
        $smtpPass = 'test123';

        //pass it into array
        $config = array(
            'ssl' => 'tls', 'port' => $smtpPort, 'auth' => 'login', 'username' => $smtpUser, 'password' => $smtpPass
        );

        //connect the 2
        $transport = new Zend_Mail_Transport_Smtp($smtpHost, $config);

        //mail setup
        $mail = new Zend_Mail();
        $mail->setBodyText($blockHtml);
        $mail->setFrom($smtpUser, 'From');
        $mail->addTo($smtpUser, 'To');
        $mail->setSubject('New Email');

        try {
            $mail->send($transport);
            Mage::getSingleton('core/session')->addSuccess('Email sent successfully.');
        } catch (Exception $e) {
            Mage::getSingleton('core/session')->addError('Unable to send email. Please try again later.');
        }
    }
}