Looking for logging into the Zimbra Ics site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Zimbra Ics site. After that you can login as usual with your login credentials.
https://mail.icsaddis.edu.et/zimbra/;jsessionid=126r9zn4dg7d1v9pz0w4ryjrd?loginOp=relogin&client=socialfox&loginErrorCode=service.AUTH_REQUIRED
https://wiki.zimbra.com/wiki/Accessing_Zimbra_Collaboration_Server_with_iCal_and_Calendar
https://wiki.zimbra.com/wiki/How_To_Link_Remote_iCal_Calendar
https://www.zimbra.com/open-source-email-overview/
https://zimbra.org/extend/category/calendar
https://zimbra.org/extend/category/utilities
https://wiki.xmission.com/Zimbra_Migration:_Calendar_ICS_Import/Export
https://www.hampshire.edu/it/zimbra-calendar
https://www.greenviewdata.com/wiki/Calendar_Backup
https://kb.brandeis.edu/display/SCI/Using+Google+Calendar
https://github.com/phacility/libphutil/blob/master/src/parser/calendar/ics/__tests__/data/zimbra-timezone.ics
https://www.jevents.net/discussions/solved-ics-url-import-from-zimbra-doesn-t-work
https://smallbusiness.chron.com/connect-zimbra-calendar-outlook-60726.html