SanJ,
This would take a custom script. I have plans to ajaxify the 'queue status' header so it can auto update every several seconds without interfering with your browsing/using ListMail.
You can get the queue count with a MySQL query like this, (place script in LMP folder and browse to it):
<?php
include('./config.php');
include('./admin.php');
$maxtime=600; // max script run time X secs
$delay=10; // update every X secs
$start=time();
while(!$done){
list($count)=mysql_fetch_row(mysql_query("select count(*) from lm_sendq"));
echo date("Y-m-d H:i:s T")." <b>$count</b> messages left<br>";
flush();
$diff = time()-$start;
if($diff>=$maxtime) $done=1; else sleep($delay);
}
echo "Maximum execution time reached.<br>";
?>
Regards