SMTP on CodeIgniter shows success, but e-mail is not delivered to Gmail account

I am trying to setup SMTP on CodeIgniter. Everything is working fine and I recieve success message on page, that email is sent without errors. But, email is not delivered.

Here is the code, that I use:

$config = Array(
'protocol' => 'smtp',
'smtp_host' => 'ssl://smtp.googlemail.com',
'smtp_port' => 465,
'smtp_user' => 'my-email@gmail.com', 
'smtp_pass' => '***', 
'mailtype' => 'html',
'charset' => 'iso-8859-1',
'wordwrap' => TRUE
);
$this->load->library('email', $config);

$this->email->from('my-email@gmail.com', 'Explendid Videos');
$this->email->to('my-email@gmail.com');
$this->email->reply_to('my-email@gmail.com', 'Explendid Videos');


$this->email->subject('Explendid Video - Contact form');

$message = "Contact form\n\n";
$message .= "Name: ". $_POST['name'] . "\n";
$message .= "Phone: ". $_POST['phone'] . "\n";
$message .= "Email: ". $_POST['email'] . "\n";

$this->email->message($message);

$this->email->send();

What can be the reason, that e-mail is not actually delivered.