Is it possible to disable CalDAV iTip notifications? The below settings aren't working.
Unfortunately, disabling the notifications don't work as it is caused by a bug in Horde. Horde resolved this issue but it won't be available until version 6.0 goes to stable. cPanel servers use the stable version of Horde. Currently, their stable version is 5.2.22 which doesn't include this fix.
When Horde releases version 6.0 to stable, cPanel will update the Horde version to include the fix for turning off CalDAV notifications.
The steps in the below feature request can be followed to work around this problem manually.
Note: Using this workaround is at your own risk. I would advise waiting until an official stable release of Horde resolves this problem.