Thanks for reply, but I need to know how to do that correctly because I did the below steps but it doesn't work:
I download (main.inc.php) file then add this code:
$rcmail_config['plugins'] = array(
'password',
'sieverules',
'quickrules',
'sauserprefs',
'markasjunk2',
'rcguard',
'zipdownload',
'contextmenu'
);
the password option is appeared
but when I tried to change the password this error is appeared
then some one told me that I have to rename (main.inc.php.dist) file to (main.inc.php) by FTP, I did it and this file disappeared
but when I check the sitting from email page the password option disappeared.
That what I did exactly nothing more or less
any advice with detail please