Email Services/Zimbra User Documentation/External Sharing

Sharing with Everyone

Note: You should first create a calendar for public sharing

To share the public calendar so that anyone can read it, again from the Zimbra calendar web interface click the Preferences tab at top right, pick Sharing in the Preferences menu at left, and at the bottom of the screen select Calendar as the Folder type and click on Share:

Again select your public calendar:

This time for Share with pick Public: