How to use your Zimbra email account (Zimbra Collaboration 8.6)
Note: You will to know the HIS Zimbra server name URL: it is provided when your account is setup.
Appointments & Meetings
Searching Your Account
Sharing Your Items
Changing Your password
You will find many more articles on how to use your Zimbra email account in the Zimbra Help center.
and in the Zimbra Web Client User Guide for Zimbra Collaboration 8.6.