Apart from what has been said in the previous message, you could setup
your boss's email account on your system but ensuring that messages are
NOT downloaded from the server so that your boss can also view his/her
messages. Not an ideal situation especially if your boss logs in before
you do then he/she is likely to download the messages and you want have
any copies on your system.
Just a thought but this message is now archived here where M$ can't
censor it: