[RCD] Possible performance improvement (UNSEEN)?

Albert Lee trisk at forkgnu.org
Mon Jun 14 14:27:47 CEST 2010

On Mon, 14 Jun 2010 13:56:25 +0200, "A.L.E.C" <alec at alec.pl> wrote:
> In IMAP's RFC (6.3.1 SELECT Command) is described a one element of 
> SELECT command response:
> OK [UNSEEN <n>]
>              The message sequence number of the first unseen
>              message in the mailbox.  If this is missing, the
>              client can not make any assumptions about the first
>              unseen message in the mailbox, and needs to issue a
>              SEARCH command if it wants to find it.
> So, I'm just thinking loud. Can we assume that there are no unseen 
> messages in the mailbox when server doesn't include UNSEEN in the 
> response? This is true for dovecot, how about others? We could skip one 
> SEARCH call.

Directly contradicting the RFC? ;)

What about STATUS ... (UNSEEN)?


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