[Dovecot] Whether the THREAD command support cross-mailbox thread?

[Timo Sirainen]

On 9.3.2012, at 10.09, Andy YB Hu wrote:

> 
> In the real world, the mails which belongs to one thread could be dispersed
> in different mailbox, at least Inbox and SENT, so whether the command can
> search different mailboxes and grap them in one talk with dovecot?
> 
> If Not, any other approach to do that?

Create a virtual mailbox containing all mails. Then you see all the mails within a thread. http://wiki2.dovecot.org/Plugins/Virtual

> BTW, what the THREAD=REFS stands for? In the RFC,
> http://tools.ietf.org/html/rfc5256, i didn't find this algorithm.

It's from http://tools.ietf.org/html/draft-gulbrandsen-imap-inthread-05 which never made it to an actual RFC.