Meeter is a free useful App that will read iCal Calendars and collect all the upcoming Zoom (and others) meeting links together. You just need to make sure the link is your Zimbra calendar entry.
To setup Meeter for you Zimbra events.
1. Make sure your Zimbra calendar is setup in your Mac Calendar (iCal), if you have not setup your calendar follow the directions in the link below. Then continue to step two.
Zimbra – Setup Calendar on the Mac
2. Go to the App Store and install Meeter
3. Launch Meeter and grant it permission to access you Calendar.
4. Meeter will now read your Calendar and show you upcoming Zoom meeting links.