If someone's interested, here's an explanation and test code how I was planning on replacing the current .imap.index.tree file's functionality. The .tree file will be removed so you'll save some disk/memory as well, something like 5-20% of whole indexes. -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: index.c URL: <http://dovecot.org/pipermail/dovecot/attachments/20030714/cabc8eed/attachment-0001.c>