Php Codeigniter Email Send

   $add = trim($dip->email);
                $text ="Your Exam Name : "." ".$name."\n"."Exam Date : "." ".$date."\n"."Exam Start time : "." ".$time."\n"."Exam Duration : "." ".$duration." Minutes"."\n\n\n Please Log in to:"." "."http://exam.thecitybank.com \n\n\nThis is an AUTO_GENERATED email. Please do not reply here";
                $config['protocol'] = 'smtp';
                $config['smtp_host']='smtp.thecitybank.com';
                $config['port']='25';               
                $config['charset']='utf-8';
                $config['wordwrap']='TRUE';
                $config['multitype']='html';
                $config['newline']='\n';
                $this->email->initialize($config);
                $this->email->clear();
                $this->email->from('service.quality@thecitybank.com');
                $this->email->to($add);
                $this->email->subject('Retake Exam');
                $this->email->message($text);
               
                if($this->email->send())
                {
                    echo '<br><font color="Green">Mail Sent Successfully to UserId</font>'.nbs(2).$dip->username.nbs(2).'e-mail address:'.nbs(2).$dip->email;
                }
                else
                {
                    echo '<br><font color="RED">Mail Sent Failed To UserId</font>'.nbs(2).$dip->username.nbs(2).'e-mail address:'.nbs(2).$dip->email;
                }