Hi, We are building webmail & groupware software using cyrus for the mail storage part. I'm wondering if any programming interface existed to extend cyrus parts ? Interesting things for us would be : - extending sieve (for exemple to implement "in my organisation" / "out of my organisation" vacation messages) - IMAP protocol extensions (most needed thing would be to "idle" on every folders, not just inbox) - custom authentification mechanism (for single sign-on purpose, because kerberos doesn't fit everywhere) ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html