Envio de email com Gmail no CodeIgniter

gmail_codeigniter.php

<?php

$this->load->library('email');

$this->email->initialize(array(
	'protocol'     => 'smtp',
	'smtp_host'    => 'ssl://smtp.googlemail.com',
	'smtp_port'    => '465',
	'smtp_timeout' => '60',
	'smtp_user'    => '{{{email gmail}}}',
	'smtp_pass'    => '{{{senha gmail}}}',
	'charset'      => 'utf-8',
	'newline'      => "\r\n"
));

$this->email->from('{{{remetente}}}', '{{{nome remetente}}}');
$this->email->to('{{{destinatario}}}');

$this->email->subject('{{{assunto}}}');
$this->email->message('{{{mensagem}}}');

$this->email->send();