Once you have read a message there are a number of options hotmail gives
you to make communicating more efficient.
Reply: This option automatically opens a new message that is
addressed to the person who sent you the message. In the body of the
new message there will also be a copy of the message you are replying
to.
Reply All: This works similarly to "Reply" but
replies to all the addresses in an e-mail not just the main
one.
Forward: This option lets you send to other people an exact copy of
a message that was sent to you.
Delete: This option erases messages that you have marked with a
check mark from your "Inbox."