Slow email sending

Hi all,

I use opencart 2.0.2.0 and when I send email from code (using code below), have to wait 20-25 seconds to sending email. So it takes a long time...
Any idea, how can I speed up and what causes this?

$mail = new Mail();
$mail ->setTo($from);
$mail ->setFrom($to);
$mail ->setSender($sender);
$mail ->setSubject($subject);
$mail ->setHtml($html);
$mail ->send();

Side note: In the Admin->System->Settings->Mail "Mail protocol" is "Mail" (I don't know if its important)

Thanks for help

Your server is actually sending the emails, so changing the code will not change anything.

As above, this is probably one for your web host.

Problem solved. Protocol has to be SMTP