It's in .log files. It stays .. "for a while". Depends on usage. I can't give any real numbers.
On 4.9.2010, at 0.34, Joe Wong wrote: > How about the UID return in VANSISH response? is it also store in the index > file? > > On Fri, 3 Sep 2010, Timo Sirainen wrote: > >> On Fri, 2010-09-03 at 10:49 +0800, Joe Wong wrote: >> >>> How long is the MODSEQ NUMBER kept for each UID ever exists in the >>> mailbox? >> >> MODSEQs are stored in the index file separately for each message, so as >> long as indexes aren't deleted they stay there forever. >> >> >