The cPanel emails can be synced with Outlook, but unfortunately, the calendar cannot be synced by default. However, there are multiple third-party applications available.
To overcome this, firstly download & install this app: "https://caldavsynchronizer.org/download-2/" Outlook CalDav Synchronizer is a free Outlook Plugin, which synchronizes events, tasks and contacts between Outlook and Google, SOGo, Nextcloud or any other CalDAV or CardDAV server. Supported Outlook versions are Office 365, 2019, 2016, 2013, 2010 and 2007.
Once installed, follow the steps from the Roundcube documentation here: https://roundcubeplus.com/tutorials/caldav/calendar-outlook.
Once completed, you will be able to sync your events, tasks and contacts to Outlook.
