Send HTML Mail Using ZF2

gistfile1.txt

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;


//////////

$message = new Message();
$message->addTo('samsonasik@yahoo.com')
    ->addFrom('samsonasik@gmail.com')
    ->setSubject('Test send mail using ZF2');
    
// Setup SMTP transport using LOGIN authentication
$transport = new SmtpTransport();
$options   = new SmtpOptions(array(
    'host'              => 'smtp.gmail.com',
    'connection_class'  => 'login',
    'connection_config' => array(
        'ssl'       => 'tls',
        'username' => 'yourgmailusername',
        'password' => 'yourgmailpassword'
    ),
    'port' => 587,
));

$html = new MimePart('<b>heii, <i>sorry</i>, i\'m going late</b>');
$html->type = "text/html";

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

$message->setBody($body);

$transport->setOptions($options);
$transport->send($message);