I know that it is obvious to and necessary to have case sensitive password but unfortunately email login for ISPConfig on webmail is case sensitive and making me alot of hassle how to fix that? thanks.
The email address is only used to get the pop3 username, which is always case sensitive.. You can try to change the SQL statement in the uebimiau login script to be case insensitive.
Thats what i have understand from your prior post. Have you tried the solution i've posted (changing the login script)?
The username is saved case sensitive. But it will be searched by the email address and you can try to cahnge that, so it will return the correct username when the email address is entered with the wrong casing.