I want to send a link using email in sendgrid
$html = 'click on this <a href="' . current_url . site_url("/users/verfication?code=" . $code) . '">link</a> to verify your account';
but it just send plain text instead of rendering link like below message
click on this <a href="//users/verfication code=283add227e43e2674980ce9bbcd34833">link</a>
to verify your account
$CI->email->to($to);
$CI->email->subject($sub);
$CI->email->message($html);
$CI->email->send();
}