Outlook - how it knows messages already downloaded??

[AndyV]

How does Outlook know it has downloaded messages so as not to download
again?, Where does it store this info?
I have transfered to a new pc and dont want to download hundreds of
duplicate messages????

 

[Brian Tillman]

How does Outlook know it has downloaded messages so as not to download
again?

Outlook and the mail server cooperate to assign a value called a UIDL to
each message. Outlook remembers the UIDLs of messages it has downloaded.
If it sees a message with the same UIDL, it does not download it again.

Where does it store this info?

That's a good question and I've never seen a definitive answer and it
probably varies depending on the Outlook version. I suspect it's in the
registry for current Outlooks.

 

[AndyV]

MMM, Thanks But doesn't Really help as I have New Pc and dont want to
download Hundreds of Messages again to have Duplicates and have to spend
hours deleting unwanted ones. I was hoping the info wouldbe in a file
somewhere so I could transfer it to the new Pc, Like the .pst, .nk2, .dat etc.
Regards Andy
Outlook 2003, Windows Xp Home

 

[Brian Tillman]

MMM, Thanks But doesn't Really help as I have New Pc and dont want to
download Hundreds of Messages again to have Duplicates and have to
spend hours deleting unwanted ones. I was hoping the info wouldbe in
a file somewhere so I could transfer it to the new Pc, Like the .pst,
.nk2, .dat etc

Do you have web access to your mail account at the ISP? If so, create a new
folder on the server and move the old messages to that new folder. Outlook
can't download them if they're not in the Inbox on the mail server. They'll
still be on the server if you want to reference them (via the web
interface), but Outlook won't know about them.