HTML email - Do you see the problem?

Huh, empty?!

It should give you a raw view of things as headers and body, and the message if sending the mail was successful or not...

tryed

Code:

if($this->email->send())
           {$_SESSION['successmessage'] =    $this->email->print_debugger(); $this->session->mark_as_flash('successmessage');}
           else{$_SESSION['errormessage'] =    $this->email->print_debugger(); $this->session->mark_as_flash('errormessage');}
           redirect('...my_url...','refresh');
       }

and ...

Code:

if($this->email->send())
           {print_r($this->email->print_debugger()); exit;}

both empty and email is send out (text/plain)