[Imap-protocol] Checking for new messages
tss at iki.fi
Sun Jan 6 20:02:03 PST 2008
On Sun, 2008-01-06 at 17:50 -1000, Steve Freitas wrote:
> With IMAP4, it seems to be more complicated, but I hope I'm missing
> something here. I can't use message sequence numbers in any way to do
> this, because they're unstable (since deleting a message decrements all
> sequence numbers above that of the deleted message). And I can't use
> UIDs if, like I'm experiencing when dealing with the Courier IMAP
> server, I get a new UIDVALIDITY number every time I connect to the
> server and open a mailbox.
Your Courier setup is then somehow broken. UIDVALIDITY doesn't normally
change, even with Courier. I think it's just as likely for POP3 UIDLs to
change as IMAP UIDVALIDITY.
Another possibility anyway could be using keywords. Mark them with some
"mysoftware-processed" keyword when you're finished with them. Although
not all servers support keywords.
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