Am Freitag, 12. Juni 2020, 09:35:30 CEST schrieb Marco: from my last experiences / knowledge: > Roundcube, is not able to use "external" CardDav/CalDav server But there seem to exist external (commercial?) plugins which allow "manual configurable" client mode (see bottom): https://roundcubeplus.com/tutorials/caldav/creating-caldav-connection some third party developments: https://github.com/christian-putzke/Roundcube-CardDAV https://packagist.org/packages/roundcube/carddav > or Horde Webmail. Horde 4 has it's own CardDAV/CalDAV server implementation wwhich is default. However, it provides usage / connectivity to "special" external IMAP based CardDAV/CalDAV within the Kolab project which is developed on/with cyrus, but still does not provide the new HTTP standards mechs.. "manual client mode": ================= But Horde is able to "use" CalDAV" als client by "external calendars" over HTTP ressources, but must be manually added / configured to a users account (with ugly manual auth). So this is probably not what you looking for. Would be cool if Horde 4 get Cyrus HTTP support too in the future. cheers, niels. -- --- Niels Dettenbach Syndicat IT & Internet http://www.syndicat.com PGP: https://syndicat.com/pub_key.asc --- ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus