Add logo image at footer of email using Codeigniter 3

i m trying to add logo to end of email (in regards section), but i am able to send only image link , please help me out, thanks in advance, appreciating your valuable time.

Here is my code

    public function sendMailToClient(){    $subject = "park Group of Hotels.";    $message = '<p>Hello'.$this->input->post('add_name').', <br>Greetings from park!<br> Thanks for choosing Hotel park! We aim to make your stay luxurious and comparting.<br>    we will call and confirm you soon.You can also reach us on _+91 973255 </p><br><br><div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">    Regards,</div><div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">    park Group of Hotels</div><img src="/hotelempark/assests/img/Logo_1.png" alt="Hotel Empark">';    $this->load->library('email');        $this->email->set_newline("\r\n");                        $this->email->from('abcd@gmail.com');         $this->email->to($this->input->post('email'));        $this->email->subject($subject);        $this->email->message($message);        // $this->email->cc('another@example.com');        // $this->email->bcc('and@another.com');        $mail= $this->email->send();        if($mail>0){          $this->session->set_flashdata('message', 'Thanks for Booking Room In Our Hotel, We will Call You Soon');          $this->email->to($this->input->post('add_email'));        }else{          show_error($this->email->print_debugger());    }  }

email is sending successfully but i images are not loading.