Rated 5 out of 5 stars

Thank you!
This is the simplest yet most useful integration of Google Calender in Thunderbird, showing you not only the calendars, but also Google Notes and Tasks!

Rated 4 out of 5 stars

Hi,
It's a very good exension, but it doesn't work with thunderbird 70 o:((

It's necessary to modify manifest.json and install.rdf

Rated 1 out of 5 stars

It works with one account only.
It shows new empty tab when I try to add second account.

Rated 5 out of 5 stars

I've been mucking around, on and off, for years, making sure that my online and offline calendars are synchronised. Now they are, thanks to your Open Google Calendar extension. I also have the same issue (it's not much of an issue, really) with Google Contacts. Do you fancy writing an Open Google Contacts Add-on? :-)

Rated 5 out of 5 stars

works perfect. hope it will work with any new version of TB

Rated 5 out of 5 stars

Best add-on ever used.
Using Open Google Calendar I'm able to include Google Calendar, Google Contacts, Google Keep, Google Drive, Google Photos, Google News & Google Search tabs whenever I open Thunderbird. Everthig is bi-directional & updates instantly across all my devices.
Don't really need a browser anymore.
Will be making a donation after this review

Rated 3 out of 5 stars

Hi, again Tasks not working, update didn't help.
Pls fix. Thank you

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

Rated 5 out of 5 stars

Just installed it.
It is exactly what I was looking for.

Rated 1 out of 5 stars

Grottenschlecht.
Seit 3 oder 4 Stunden suche ich mir den Ast ab. ich habe hier ein Falsches google Kontro drin. Es gbt 100 % keinen weg wo man das richtige Google Kontro hinzufügen kann. Es haben sich gleich mehrere bekannte/Freunde an diesen Addon versucht. keiner hat es gefunden. Immer hin sehe ich Termine von Fremden Accounts.. Ein Account ist drin der nicht mir gehört. Datenschutz gibt es hier wohl nicht.

Rated 4 out of 5 stars

Great add-on! However, I cannot sign into a second account. I need to be able to see calendars for multiple accounts.

Rated 5 out of 5 stars

A note for those who have problems with the tasks disappearing: I had the same problem, but found out that, if you close the tasks sub-window before closing the calendar tab, the next time you open the tab, the tasks will be closed, but when you open the window, the taks won´t disappear! So, you just need to close it before closing the tab! Don´t know why it works...rs

I´m a user of Google Calendar, and have been looking for quite a good time for the best way to use it with a email client, without the need to open browser or apps. I like Thunderbird and now with this extension it is simply very good.

Rated 4 out of 5 stars

I have the same problem with the tasks, they appear at the beginning of selecting the calenadario icon, but only for a brief period of time, then they disappear and the window remains blank.
It hurts, because I use this part of the calendar a lot, and it forces me to have the Google application open.
I hope it can be resolved soon.

Rated 2 out of 5 stars

I also have this same problem "Since yesterday (March 14, 2019) the tasks appear for a very short time and then there is only a white window"

Rated 3 out of 5 stars

It has a lot of potential, especially since Lighting is so poor as a synched calendar. Sadly, I installed it today, and like many others find that 'Tasks' appear in their window but are visible for only a second or so, then they disappear leaving a blank window that cannot be closed. This is a pain, not only can I not see my tasks, but the rest of the calendar is made small by the blank task window. Shame., I hope it improves because TB needs a good synched calendar.

On the positive side, the Google calendar appears exactly like it does in the GUI interface, and changes made in your calendar in both the tab and the web GUI appear in the other calendar within a few seconds. Creating new events, deleting events and editing existing everts can be made in either calendar.
Once the task window problem is resolved it will be a really good addon.

Rated 3 out of 5 stars

It's good to be able to check calendars and tasks without signing in to Google on browser. However, since a couple of weeks ago, the tasks view keeps disappearing few seconds after loading. The settings window doesn't work either. I'm using another option 'Provider for Google Calendar' at the same time, when I want to copy and paste schedules. It also has problems in tasks management, though.

Rated 4 out of 5 stars

good work except Tasks - they disappear after 1-2 seconds after loading.

Rated 5 out of 5 stars

So many poeple with an Android device make use of Google Calendar. So why not get easy access to it from your Windows computer? Making it pop up as a side effect of checking your mails in Thunderbird is the ultimate idea.
Thank you so much! Had been using "Google Calendar Tab for years until Mozilla decided to change s.th. by introducing TB 60, which did no longer allow this great trick. Emmanuel Roecker found a way to reactivate it by programming "Open Google Calendar". so: 5 Stars only because there are no more.

Rated 5 out of 5 stars

Very good

Rated 5 out of 5 stars

Thanks Eddy. Works like a dream

Rated 5 out of 5 stars

UPDATE Jan 28 2019:
If Thunderbird cookie settings are set to refuse cookies, you must add an exception for https://calendar.google.com ! A simple exception for the entire google.com domain does NOT work! Once I did this, the Open Google Calendar v1.4 extension works as promised: i.e., it opens my Google calendar account in a Thunderbird tab.
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Original rating 1, with review below:
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Doesn't work with Thunderbird 64 bit v.65.03b
returns error from Google:
"400. That’s an error from Google:

The requested URL was not found on this server. That’s all we know."
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I will upgrade review when extension starts working.