Dear Maintainer, Currently, Evolution suffers from a bug whereby CalDAV calendars can be incorrectly marked as read-only, thus rendering them pretty much useless for anyone who wants to add or modify events on a shared event. This has been fixed upstream (bug #721712) The actual fix can be found at https://git.gnome.org/browse/evolution-data-server/commit/?id=8b2746f Unfortunately, that fix has not been backported to jessie. This is a serious problem for anyone who wants to use CalDAV on their GNOME desktop with Jessie! Thanks in advance!