<?php

            require_once 'Zend/Mail.php';
            require_once 'Zend/Mail/Transport/Smtp.php';

            $config = array('auth' => 'login',
            'username' => 'myusername',
            'password' => 'password');

            $transport = new Zend_Mail_Transport_Smtp('mail.server.com', $config);

            $mail = new Zend_Mail();
            $mail->setBodyText('This is the text of the mail.');
            $mail->setFrom('[email protected]', 'Some Sender');
            $mail->addTo('[email protected]', 'Some Recipient');
            $mail->setSubject('TestSubject');
            $mail->send($transport);