Can Calendars and Contacts be setup on non-Apple devices?

We only test Calendars and Contacts on Apple®-distributed clients. These clients natively support CalDAV and CardDAV. If you have other calendar or contacts applications that support those protocols, you may be able to access your calendars and contacts from those applications. Further information can be found in our documentation.

 

https://docs.cpanel.net/knowledge-base/webmail/how-to-set-up-calendars-and-contacts/