Your password is stored in your ListMail MySQL database in the "admpw" field of the "lm_config" table. The value can be viewed with PhpMyAdmin, commonly available from your hosting control panel, or by using a custom PHP script, below:
Copy the following code into a new file, such as "recover_pw.php". Upload the file to your main ListMail directory and browse to it.
<php>0){
list($pw)=mysql_fetch_row($row);
echo " your password is <b>$pw</b><br>";
} else {
echo "<b> could not read config!</b><br>";
}
?>