Sometime Today, Anil Gracias assembled some asciibets to say:
does any 1 know what programm / code / script shows the line... 'you got mail'
once i login into the shell.
thats usually in /etc/profile script i think /bin/mail is used to get the info.
Nope. bash does it itself. It consults the MAIL and MAILCHECK environment variables to find out where to look and how often to look. There's also MAILPATH and MAIL_WARNING
do a man bash and search for these environment variables to find out exactly how to use them.