If you need to keep the messages on the server for access elsewhere,
you might want to see if the email server supports IMAP access.
That way, Outlook and other programs act merely as a client, and the
mail (all folders, all messages, etc.) are stored on the server only.
COPIES are stored in each client program, but the data remains on the
server.
When you delete a message in one of the clients, it merely marks the
message for deletion on the server. Until you tell the client to
purge those messages, they will remain on the server. When you purge,
then they're deleted on both server and client.
IMAP is supported on GMail, GMX and several other email services. If
you're using Hotmail (i.e., Windows Live), you would be using HTTP and
the Outlook Connector, which functions in much the same way as IMAP.
Might be worth looking into.
//Steve//