$config = Array(
        'protocol' => 'smtp',
        'smtp_host' => 'ssl://smtp.gmail.com',
        'smtp_port' => 465,
        'smtp_user' => 'dkumara85@gmail.com',    //email id
        'smtp_pass' => 'xxxxxxxxxxx',            // password
        'mailtype'  => 'html',
        'charset'   => 'iso-8859-1'
    );
    $this->load->library('email', $config);
    $this->email->set_newline("rn");

    $this->email->from('dkumara85@gmail.com','my name');
    $this->email->to("dkumara85@gmail.com"); // email array
    $this->email->subject('email subject');
    $this->email->message("my mail body");

    $result = $this->email->send();


    show_error($this->email->print_debugger());  // for debugging purpose :: remove this once it works...