Recommended Rated 5 out of 5 stars

Thanks, Philipp, for making this great tool freely available. I've been using it for several years now with different versions of Thunderbird and it always worked like a charm.

Thunderbird BETA 59.0b Workaround Rated 5 out of 5 stars

For those using the Thunderbird Beta and looking for a workaround for Google Calendar access, the instructions here worked for me:
https://blog.mozilla.org/calendar/2013/09/google-is-changing-the-location-url-of-their-caldav-calendars/

Short version:
- Open the calendar tab
- Add a new calendar (right-click the left panel, choose "New Calendar")
- Select "On the Network"
- Choose "CalDAV"
- Set location to: "https://apidata.googleusercontent.com/caldav/v2/[your-gmail-address]/events"
(Replace [your-gmail-address] with your gmail. Don't include quotes or square brackets.)
- Enter a display name for your calendar and set the email account.
- When completed the Google account login window will appear. Enter gmail account and password.

Formidable, mais...LENT ! Rated 1 out of 5 stars

Cet add-on fonctionne très bien...Mais il ralentit tellement thunderbird que j'ai dû me résoudre à l'enlever.
De même, il est impossible de définir une période de synchronisation (genre ne pas récupérer la totalité des évènement de google agenda, mais juste l'année en cours, ou le mois ou autre).
Cela permettrait certainement d'alléger le tout sans être obligé de virer les vieux évènements. (besoins ponctuels oblige)

This user has a previous review of this add-on.

Don't work with Thunderbird 59.0b2 Rated 1 out of 5 stars

Calendar google provider does not work with Thunderbird 59.0b2 and lightning-6.2a1.
Is there an update planned?
Fournisseur google agenda ne fonctionne pas avec Thunderbird 59.0b2 et lightning-6.2a1.
Est ce qu'il y a une mise à jour prévu?

Works well Rated 5 out of 5 stars

The only thing I noticed lacking was some progress indicators while it was connecting to Google to retrieve e.g. the list of calendars. A white window looks odd, but it got there after 30 seconds or so, and everything's worked great since. Sync works in both directions.

Always ask for login information when starting Thunderbird 52.5.2 (32-bit) Rated 3 out of 5 stars

Always ask for login information when starting Thunderbird 52.5.2 (32-bit). Thought was a fluke so I uninstalled and re-installed. Every time you open Thunderbird, you must login to your Google account to authenticate. Please fix!

New version stopped working Rated 3 out of 5 stars

In my version Thunderbird 52.5.2 the addon was not great. Today it becomes not working. Specifically, when I choose google calendar,
it doesn't dismiised the task. So I'm just stuck there.

Does not work under Thunderbird 59.0a1 Rated 1 out of 5 stars

Does not work under Thunderbird 59.0a1, can't press next. I've never been able to use it as a result.

Stopped working? Rated 4 out of 5 stars

Great add-on, but for some reason I cannot bring it to work after last MS W10 update yesterday. Does not connect...
I re-installed Lightning, the add-on itself, etc, no use. Not working... :-(

bo Rated 5 out of 5 stars

funcionament correctecte i bona sincronització

Pesky reminders Rated 2 out of 5 stars

This installed OK. Got shared calendars to work. Unfortunately, I am plagued by reminders from the past month (someone else's calendar) . I set the calendar not to send me reminders. Get these every few minutes or so. Unusable. Pity.

Seems broken in Thunderbird 58 Rated 4 out of 5 stars

This add-on was super useful to me but seems to be broken in Thunderbird 58. Many thanks for its past usefulness, though.

Edit: See these links for an alternative solution, using CalDAV.
https://blog.mozilla.org/calendar/2013/09/google-is-changing-the-location-url-of-their-caldav-calendars/

https://developers.google.com/google-apps/calendar/caldav/v2/guide#connecting_to_googles_caldav_server

Unverzichtbar! Rated 5 out of 5 stars

Auch nach dem letzten Update auf SeaMonkey 49.1 funktioniert der Provider für Google Calendar wunderbar. Hiermit hat Philipp eine großartigen Beitrag für Mozilla geleistet. Ich halte meine Google-Kalender hiermit auf allen Systemen (Windows, Linux; zuhause, am Arbeitsplatz) synchron. Auch mobile Änderungen von Android aus werden unmittelbar in Lightning übernommen. Ich werde gerne noch einmal spenden!

This user has 2 previous reviews of this add-on.

Does not work with v56 Rated 1 out of 5 stars

Cannot click "Next" when adding the calendar. Does NOT work.

Top ***** Rated 5 out of 5 stars

Funktioniert einwandfrei, wenn sämtliche Voraussetzungen erfüllt / gegeben sind!
Schlechte Bewerter sollten mal ihre Rechner etc. checken!
Für mich unersetzlich! - Top!

Fonctionne nickel Rated 5 out of 5 stars

Après avoir ajouté l'extension, j'ai accès en lecture et en écriture à tous mes calendriers Google. Bon quand on ajoute un calendrier Google par après, il faut à nouveau faire l'ajour dans Thunderbird.

Still working from Thunderbird to Android (SPlanner) Rated 4 out of 5 stars

The addon is really great.
The synchro still working if you create an event from Thunderbird (but not in the other way anymore).
[Myconfig: Thunderbird 52.4.0 on Linux + SPlanner on Android 5.0.1]

Doesn't work anymore Rated 1 out of 5 stars

The addon was great. But I found today it becomes not working. Specifically, when I choose google calendar, it doesn't black out the location space and let me advance. So I'm just stuck there.

No syncing capability Rated 1 out of 5 stars

The instructions for integrating the add-on are not valid. There is no way to combine what is already on my Google calendar with lightning.

Now works for Thunderbird on Mac OS Rated 5 out of 5 stars

After my previous review, the add-on was updated to support Mac OS, really happy with this now :)

This user has a previous review of this add-on.