If you created a plugin how does it know to send Pm to that new member of that premium membership when they sign up??
PHP Code:
// create the DM to do error checking and insert the new PM
$pmdm =& datamanager_init('PM', $vbulletin, ERRTYPE_ARRAY);
$pmdm->set('fromuserid', 1234);
$pmdm->set('fromusername', 'Welcome-Bot');
$pmdm->set('title', 'Welcom to our Forums');
$pmdm->set('message', "Hello\nI am a Bot and would like to give you a warm welcome :)");
$pmdm->set_recipients('newuser', $botpermissions);
$pmdm->set('dateline', TIMENOW);