+ SEARCH supports INTHREAD search key, but the rest of the INTHREAD
draft isn't implemented yet and isn't advertised.
+ THREAD X-REFERENCES2 algorithm where threads are sorted by their
- latest message instead of the thread root message.
+ latest message instead of the thread root message. There is also no
+ base subject merging.
+ Thread indexes for optimizing IMAP THREAD command and INTHREAD
search key.
- + Virtual mailboxes
+ + Virtual mailboxes: http://wiki.dovecot.org/Plugins/Virtual
v1.1.3 2008-09-02 Timo Sirainen <tss@iki.fi>