will the ical feed work with 30 boxes?

will the ical feed work with 30 boxes?

Unfortunately, Zoho doesn't have a robust calendar for scheduling, so it has referred developers to Google Calendar. I (and a number of others) am very unhappy with the Google Calendar and am trying to find an acceptable alternative. I have heard 30 boxes is a much better calendar that google, but I can't seem to get the Zoho generates iCal url to work in 30 boxes. Do you know if it will work with 30 boxes or not? If so do you have any tips on how to make it work with the zoho generated ical feed.