Hello, does Sogo support Collection Synchronization (sync-token) https://tools.ietf.org/html/rfc6578
or just ctag https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/caldav-ctag.txt ? Thanks -- Jurgis Pralgauskis tel: 8-616 77613; Don't worry, be happy and make things better ;) -- users@sogo.nu https://inverse.ca/sogo/lists
