To use the calendar facility in VPOP3 you need a CalDAV aware client. We have tested it with the free Mozilla Sunbird & Lightning products.

These products need a URL to be able to access the CalDAV data store. The simplest way of finding out the URL is to log into your VPOP3 Webmail page, go to Tools→Settings and go to the Calendar tab. Your calendar(s) are listed there, and if you select one, its URL will be displayed. Copy this into the URL section in the CalDAV client, and enter any other settings required by the client (eg your username/password) and that should be it.

If you have VPOP3 Enterprise and need to create/delete/share any calendars you also do that through the Webmail Tools→Settings→Calendar tab.