My email/calendar provider only supports CalDAV as external request. After some investigations: It’s no baikal, “?export” returns an error It’s no owncloud Manual ICS download with regular webmail interface returns an single ICS file with BEGIN:VCALENDAR/END:VCALENDAR around every BEGIN:VEVENT/END:VENVENT. And MirrorMirror’s default calendar component get’s only the last VCALENDAR/VEVENT in file. One of my ideas: Search or write a lightweight CalDAV client which converts from CalDAV to ICS. An MirrorMirror loads ICS file from local webserver like here explained (works fine). According to http://sabre.io/dav/building-a-caldav-client/ : Options and Report works in REST client, but is missing Response-Header says “NMMDav v0.1 CalDav” - Any ideas how to solve this situation? Make the calendar component more flexible/robust? Integrate an official CalDAV support? Switch to a better calendar provider or set up an owncloud? :-) Greetings, Christian