Sends mail two times - codeigniter
$config = Array(
    'protocol' => 'smtp',
    'smtp_host' => 'ssl://smtp.googlemail.com',
    'smtp_port' => 465,
    'smtp_user' => 'mertmetinbjk@gmail.com',
    'smtp_pass' => '****',
    'mailtype' => 'html'
);

public function kayitOnay() {


        $username = $this->input->post('username');
        $email = $this->input->post('email');
        $password = $this->input->post('password');

        $data = array();

        $data['username'] = $username;
        $data['email'] = $email;
        $data['password'] = $password;

        $activationCode = $this->randomString(9);

        //Mail server ayarları config/email.php dosyası altında


        $this->load->library('email');
        $this->email->set_newline("rn");

        $this->load->view('kayit/kayitOnay', $data);
        $this->kayitmodel->uyeEkle($username, $email, $password, $activationCode);


        $dataLink['link'] = "/kayit/kayitEmailOnay/$activationCode";

        $this->email->from('bildirim@pasaj.com', 'Pasaj.com');
        $this->email->to('mertmetinbjk@gmail.com');
        $this->email->subject('Hesap Aktivasyonu');
        $email = $this->load->view('kayit/kayitOnayMail', $dataLink, TRUE);
        $this->email->message($email);
        $this->email->send();
    }

public function kayitSon() {
        $this->load->view("kayit/kayitTamamla");
    }

    public function kayitHata() {
        $this->load->view("kayit/kayitHata");
    }

    public function kayitEmailOnay() {

        $registrationCode = $this->uri->segment(3);

        if ($registrationCode == '') {
            echo "URLde onay kodu yok";
        }


        $registrationConfirmed = $this->kayitmodel->uyeOnay($registrationCode);

        if ($registrationConfirmed)
            $this->kayitSon();
        else
            $this->kayitHata();
    }