Zimbra: Thunderbird Contacts
Zimbra calendar and contacts follow the CalDAV and ContactDAV standards.
For Thunderbird, you need to install the "Zindus" contacts addon. Go to Tools -> Addons, and search for "Zindus".
Once you have the Zindus component installed, the steps to sync your Zimbra contacts are as follows:
a. Tools -> Zindus b. click on 'Add' c. select "Zimbra" d. Server Url: https://mail.ncf.ca/ e. Enter your email address and password, should be "firstname.lastname@example.org" and your password f. Select "No" for the Global Address List/GAL g. Click on "Test Connection"
If it worked, you should be set. Click 'Sync now' if you like, and then 'OK'.