Envio de email do Zend | Zend Framework: Mais prática do seu framework predileto

Galera estou usando o código abaixo e esta me retornando um erro que também esta abaixo, acho que não esta encontrando a class mas não sei como arrumar poderiam me ajudar?

Fatal error: Uncaught Error: Class 'Estoque\Controller\MimeType' not found in /Applications/XAMPP/xamppfiles/htdocs/estoque/skeleton-application/module/Estoque/src/Estoque/Controller/IndexController.php:132 Stack trace: #0 /Applications/XAMPP/xamppfiles/htdocs/estoque/skeleton-application/vendor/zendframework/zend-mvc/src/Controller/AbstractActionController.php(82): Estoque\Controller\IndexController->contatoAction() #1 [internal function]: Zend\Mvc\Controller\AbstractActionController->onDispatch(Object(Zend\Mvc\MvcEvent)) #2 /Applications/XAMPP/xamppfiles/htdocs/estoque/skeleton-application/vendor/zendframework/zend-eventmanager/src/EventManager.php(444): call_user_func(Array, Object(Zend\Mvc\MvcEvent)) #3 /Applications/XAMPP/xamppfiles/htdocs/estoque/skeleton-application/vendor/zendframework/zend-eventmanager/src/EventManager.php(205): Zend\EventManager\EventManager->triggerListeners('dispatch', Object(Zend\Mvc\MvcEvent), Object(Closure)) #4 /Applications/XAMPP/xamppfiles/htdocs/estoque/skeleton-application/vendor/zendf in /Applications/XAMPP/xamppfiles/htdocs/estoque/skeleton-application/module/Estoque/src/Estoque/Controller/IndexController.php on line 132

use Zend\Mail\Message;
use Zend\Mail\Transport\Smtp as SmtpTransport;
use Zend\Mime\Message as MimeMessage;
use Zend\Mime\Part as MimePart;
use Zend\Mail\Transport\SmtpOptions;

    public function contatoAction()
    {
        if($this->request->isPost()) {
            $nome     = $this->request->getPost('nome');
            $email    = $this->request->getPost('email');
            $mensagem = $this->request->getPost('msg');

            $html = new MimeType("
                        <b>Nome:</b> {$nome},<br>
                        <b>Email:</b> {$nome},<br>
                        <b>Mensagem:</b> {$nome},
                    ");

                    $html->type = 'text/html';

                    $body = new MimeMessage();
                    $body->addPart($html);

            $email = new Message();
            $email->addTo("paulozanc@gdteam.com.br");
            $email->setSubject("Contato feito pelo formulario estoque!");
            $email->addFrom("paulozanc@gdteam.com.br");

            $email->setBody($body);

            $config = array(
                'host'  => 'smtp.gmail.com',
                'connection_class'  => 'login',
                'connection_config' => array(
                    'ssl'       => 'tls',
                    'username' => 'paulozanc@gdteam.com.br',
                    'password' => 'T949585757t'
                    ),
                'port' => 587,
            );        

            $transport = new SmtpTransport();
            $options = new SmtpOption($config);
            $transport->setOption($options);
            $transport->send($email);

            $this->flashMessenger()->addSuccessMessage("Email enviado com sucesso!");

        }

        return new ViewModel();
        //exit();
    }

Opa acabei de resolver!!!

Peguei as informações no site "https://framework.zend.com/manual/2.3/en/modules/zend.mail.message.html" e lá tinha as informações no que estava fazendo de errado.

use Zend\Mail\Message;
use Zend\Mime\Message as MimeMessage;
use Zend\Mime\Part as MimePart;
use Zend\Mail\Transport\Smtp as SmtpTransport;
use Zend\Mail\Transport\SmtpOptions;

    public function contatoAction() {

        if($this->request->isPost()) {
            $nome     = $this->request->getPost('nome');
            $email    = $this->request->getPost('email');
            $mensagem = $this->request->getPost('msg');

            $html = new MimePart("
                        <b>Nome:</b> {$nome},<br>
                        <b>Email:</b> {$nome},<br>
                        <b>Mensagem:</b> {$nome},
                    ");
            $html->type = "text/html";

            $body = new MimeMessage();
            $body->addPart($html);

            $email = new Message();
            $email->addTo("paulostoc@gmail.com", "Paulo Henrique Stocco Zancanaro");
            $email->setSubject("Contato feito pelo formulario estoque!");
            $email->addFrom("paulozanc@gdteam.com.br", "gdTeam");

            $email->setBody($body);

            $config = array(
                'host'  => 'smtp.gmail.com',
                'connection_class'  => 'login',
                'connection_config' => array(
                    'ssl'       => 'tls',
                    'username' => 'paulozanc@gdteam.com.br',
                    'password' => 'T949585757t'
                    ),
                'port' => 587,
            );        

            $transport = new SmtpTransport();
            $options = new SmtpOptions($config);
            $transport->setOptions($options);
            $transport->send($email);

            $this->flashMessenger()->addSuccessMessage("Email enviado com sucesso!");

        }

        return new ViewModel();
        //exit();
    }