CardDAV is an address book that allows our customers to access and share contact data on a server. CalDAV is an Internet standard allowing to access scheduling information on a remote server. It’s a calendaring and scheduling client/server protocol designed to allow users to access calendar data on a server.
With CalDAV and CardDAV, email accounts created on cPanel can access their calendars and contacts remotely with third-party applications.
To use CalDAV/CardDAV with Epik's email hosting you'll need an active Web/Email Hosting Plan, and an email account tied to that plan (created inside cPanel).