Sync Google Calendar with Zimbra Calendar

Questions, comments, and problems with Zimbra on Apple desktops & general CalDAV / CardDAV questions.
CBACIT
Posts: 10
Joined: Fri Aug 08, 2014 6:54 am

Sync Google Calendar with Zimbra Calendar

Postby CBACIT » Wed Aug 17, 2016 2:50 am

Is it possible to have some way with Zimbra 8.0.6 to sync a google calendar with Zimbra calendar an vice versa?


gusans
Posts: 24
Joined: Thu Sep 25, 2014 9:02 am

Re: Sync Google Calendar with Zimbra Calendar

Postby gusans » Fri Aug 19, 2016 12:51 am

+1

I'm trying to do the same but with no luck.

so far I added zimbra calendar into Google on read only mode, but then it doesn't sync changes.
I copied the ICS link from the sharing calendar dialog box. then in google clicked on other calendars > add from URL. I had to modify the URL to read like this: https://zimbradomain/home/username/Calendar (username without @domain part).
then Google shows the entries in Calendar but if I change something from zimbra then Google doesn't reflect any changes.
michaelL
Posts: 2
Joined: Fri Sep 02, 2016 5:34 pm

Re: Sync Google Calendar with Zimbra Calendar

Postby michaelL » Fri Sep 02, 2016 5:42 pm

The only way I've found to sync Zimbra Calendar to a Google Calendar is to "Add by URL". It will display it as a different calendar and then I have to click "Copy to My Calendar" and each individual appointment to move it over to my Google Cal. I've tried importing the ics file from Zimbra into Google Calendar but nothing actually gets copied.

Anyone know of a sync tool or possible a google add-on that may be able to do this automatically both ways?

Thanks!
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Greg Solovyev
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Re: Sync Google Calendar with Zimbra Calendar

Postby Greg Solovyev » Wed Sep 07, 2016 5:09 pm

I wanted the same functionality for a while and could not find anything free (there are some desktop calendar sync apps that cost $40/month and more). So last weekend I wrote a utility on Google App Engine: http://zimbra-calendar-sync.appspot.com/. It's very basic. You log in with Google account, then log int to Zimbra. Then, select source calendar and target calendar and save the options. It saves your auth token in Google Datastore, so it will work until your auth token expires. After than, you'll need to come back to the website, log in and save the settings again. For now, it runs the sync task every 6 hours. Open to suggestions on how to add zimbra authentication without having to save login/password in the app. The sync is only one way for now (your Zimbra events will be reflected on your Google Calendar).
michaelL
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Joined: Fri Sep 02, 2016 5:34 pm

Re: Sync Google Calendar with Zimbra Calendar

Postby michaelL » Wed Sep 07, 2016 6:26 pm

I did a quick test and it seems to work well! I'll see how it keeps up in the next few days but otherwise this is the type of tool I was looking for. Thank you for sharing with me. Too bad we can't have it bidirectional.
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Greg Solovyev
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Re: Sync Google Calendar with Zimbra Calendar

Postby Greg Solovyev » Wed Sep 07, 2016 6:45 pm

michaelL wrote:I did a quick test and it seems to work well! I'll see how it keeps up in the next few days but otherwise this is the type of tool I was looking for. Thank you for sharing with me. Too bad we can't have it bidirectional.


You are welcome and thanks for testing! LMK if you find any issues. As far as bi-directional. Frankly, I didn't need it to be bi-directional so far, but maybe another hackathon weekend and I'll make it bi-directional :) I was thinking maybe adding ability to sync multiple Zimbra calendars onto one Google Calendar first.
ywng
Posts: 5
Joined: Sat Jul 14, 2018 11:22 am

Re: Sync Google Calendar with Zimbra Calendar

Postby ywng » Sat Jul 14, 2018 11:39 am

If you have an android phone you can try using the following apps to synchronise.

First sync with a local calendar using app:
https://f-droid.org/en/packages/at.bitfire.davdroid/

Than sync this local calendar with google calendar using:
https://play.google.com/store/apps/deta ... ClonerFree

tip: Hide the local calendar so it won't be shown in your calendar app.

Hope this works for you, for me it works perfect.
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Greg Solovyev
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Re: Sync Google Calendar with Zimbra Calendar

Postby Greg Solovyev » Wed Aug 08, 2018 6:28 pm

A quick update. I've re-implemented this application using Zimbra's native Java client, so it works much better now. I've also updated the UI using Polymer 3 to make it work in mobile browsers. https://zimbra-calendar-sync.appspot.com/
hane
Posts: 2
Joined: Fri Aug 31, 2018 1:13 pm

Re: Sync Google Calendar with Zimbra Calendar

Postby hane » Wed Sep 05, 2018 2:40 pm

Thanks Greg,
Any other solution which doens not imply to give you my access ?
ywng
Posts: 5
Joined: Sat Jul 14, 2018 11:22 am

Re: Sync Google Calendar with Zimbra Calendar

Postby ywng » Wed Sep 12, 2018 6:59 pm

Use the solution 3 posts higher if you have an android phone. No need for permissions for access.

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