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Re: [fetchmail]Fixed UIDL + IMAP patch

2004-05-20 15:31:05
IMAP unique IDs are not globally unique, unlike POP3 UIDs.  Also the
Unique IDs are not consistent between sessions (they are usually just
the message number in the mailbox which will change with an expunge).

The tuple (IMAP UIDVALIDITY value, Folder, UID) is unique
however. That's why there is a UID in addition to the message number.

Unique, yes, but not sufficiently persistent for the OP's purposes
(as covered elsewhere in the thread).  UIDVALIDITY can change from
one session to the next, and at least in the case of the UW IMAP
server, it does change with every new session.