GNOME Bugzilla – Bug 777274
add support for reminder sync with Mozilla Lightning through CalDAV
Last modified: 2017-02-21 13:53:50 UTC
Mozilla Lightning appears to store the status of snoozed and dismissed reminders on the server-side (CalDAV) using X-MOZ-LASTACK and X-MOZ-SNOOZE-TIME These fields appear to work for standalone servers like DAViCal and also for cloud services like Google Calendar that have their own front-end. Therefore it may be useful to support in Evolution
See also #777275 and discussion on list https://mail.gnome.org/archives/evolution-list/2017-January/msg00049.html
More about the way alarms and their persistence is implemented in Mozilla: https://wiki.mozilla.org/Calendar:Feature_Implementations:Alarms
Thanks for bug report. The WiKi page summarizes it very nicely. Once it comes to a multi-user environment the whole concept of these properties being saved on the server misbehaves, thus I'd not rather do it. It's different for a private and not shared calendars, but this is very hard to distinguish.