[Nonowmana]

for version 4.2

First step:

In admincp/email.php Find:

PHP Code:

print_textarea_row($vbphrase['message_email'], 'message', '', 10, 50); 


add just below

PHP Code:

print_yes_no_row('Send HTML Email?', 'sendhtml', 0); 


Find:

PHP Code:

construct_hidden_code('test', $vbulletin->GPC['test']); 


add just below

PHP Code:

construct_hidden_code('sendhtml', $_POST['sendhtml']); 


step 2

in includes/class_mail.php Find:

PHP Code:

$headers .= 'Content-Type: text/plain' . iif($encoding, "; charset=\"$encoding\"") . $delimiter; 


replaced by:

PHP Code:

if($_POST['sendhtml'])  { 
  $headers .= 'Content-Type: text/html' . iif($encoding, "; charset=\"$encoding\"") . $delimiter; 
}else{ 
  $headers .= 'Content-Type: text/plain' . iif($encoding, "; charset=\"$encoding\"") . $delimiter; 
} 


source: http://www.vbulletin-ressources.com/...032#post141032