dup e-mail messages

i got g-mail, hotmail and 2 other account.
for every g-mail e-message it get i get 1 message in g-mail inbox and 2
message in my quick views unread e-mail.
all of by other account goes in thier inbox, 1 in their inbox and 1 in
unread box.
if i read the other accout in box and delete the message it delete that
inbox message and the unreead message,
on g-mail inbox i read and delete message and when done it still got 2 copy
in my quick views unread e-mail,
what do i need to change.