When I get the emails at home, it deletes the files from the server, so, I
turn it off in the morning,
so I can see it during the day, when I'm at work.

However, something has recently happened, so that, it keeps getting my
emails at home, even after I've closed it.

I've looked all through the options, but I can't find out where to turn this
feature off.

any ideas here?