Hiya,
Correct me if I'm wrong, but I think it just keeps a record of the e-mails it's
downloaded. If you run the command 'UIDL' on a telnet session into a POP server,
you will get the Unique ID for every e-mail in your inbox. All Outlook does is
compare this to the list of e-mails it knows it's downloaded, and then download
the one's it doesn't have a record on. At least something like that anyway.
It's also why if Outlook or the computer crash in the middle of a download of
e-mails, it'll download 'em again (As it's lost the list! :( ).
Hope that helps.
Jonathan Wright..
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