Integrate Google Calendar Into Thunderbird

Google Calendar Tab is an extension for the Thunderbird email client that integrates Google Calendar in the desktop email program.
If you are a Gmail user chance is that you are also subscribed to other Google services such as Google Calendar.
We all know that Thunderbird users can integrate Gmail in the desktop email client to archive messages, access mails while the computer is offline, and manage the account almost as if they would use the Google web mail interface.
There has not however been a way to integrate other Google services that are related to Gmail into Thunderbird, and that includes Google Calendar.
Update: The Lightning Calendar add-on was integrated in Thunderbird recently. It enables you to integrate Google Calendar with Thunderbird. Instructions on how to do so are provided here.
Integrate Google Calendar Into Thunderbird
The Google Calendar Tab add-on for Thunderbird changes this. It displays the web interface of Google Calendar in a new tab in Thunderbird.
And since the extension uses the same account system, all calendar information from Google accounts are already available in Thunderbird once you install the extension and connect it to a Google account.
It is possible to view, edit and add events to Google Calendar which are then also visible on the Google Calendar website.Basically, all information are synced between the email client and Google Calendar from the time of set up so that you have access to them in all other applications on on the web.
If the calendar has been configured to show popups, then they will be shown in Thunderbird as well.
The extension for the email client supports both Google Calendar and Calendar for Google Apps.
Google Calendar Tab is an interesting add-on for Thunderbird that aids Google Calendar users who work with Thunderbird to integrate their calendar into the email client. There are other options to do that. IIRC it is possible to integrate Google Calendar into Lightning as well.
Update: It is 2014 now and the extension works fine in all recent versions of the Thunderbird email client. To install it, download it from the official project page on the Thunderbird Extensions repository.
Once done, open Thunderbird and select Tools > Add-ons from the menu. Click on the small settings icon next to search at the top of that page, and select the install add-on from file option. Use the file browser to select the downloaded extension file and confirm the prompt asking whether you want to install it to the email client.
The extension has not been updated since 2011, and some features may not work anymore. Its core feature set, the ability to display Google Calendar events in Thunderbird, is still working however.






You said that Outlook isn’t your main email client, so which is your main one?
I think its thunderbird
It is Mozilla Thunderbird.
Awesome! This actually solved my problem… what a stupid bug.
If this is the same bug that I’ve encountered, there may be another fix: (1) hover over open Outlook item in Taskbar, cursor up to hover over Outlook window item, and right-click; (2) this should give you Restore / Move / Size / Minimize / Maximize — choose Move or Size; (3) use your cursor keys, going arbitrarily N/S/E/W, to try to move or size the Outlook window back into view. Basically, the app behaves as though it were open in a 0x0 window, or at a location that’s offscreen, and this will frequently work to resize and/or move the window. Don’t forget to close while resized/moved, so that Outlook remembers the size/position for next time.
THANK YOU Claude!!! I could get the main window to launch but could not get any other message window to show on the desktop. You are my hero!!!!
Solved my issue! 6 years later and this is still problem…
Fantastic. Thank you. Size did the trick.
This solved my Outlook problem, too. Thank you. :)
Thank you so much, this started happening to me today and was causing big problems. You are a life saver, I hope I can help you in some way some day.
You are a god – thank you!
thanks a lot…. work like charm.. :-)
Yah…thanks Claude. I’ve been having the same problem and tried all the suggestions…your solution was the answer. It had resized itself to a 0/0 box. Cheers
Excellent post. This had me baffled even trying to accurately describe the problem. This fixed it for me.
Thank you
Thanks a lot for the article. Don’t know why it happenend, don’t know how it got fixed, but it was really annoying and now it works :-)
Thanks a lot. I was facing this issue from past 3 week. I tried everything but no resolution. The issue was happening intermittently and mainly when I was changing the display of screen ( as i use 2 monitors). The only option i had was to do system restore. But thanks to you.
I’ve been tried to sole this problem for 12hours. Your comment about changing the display of screen helped me a lot!! Thanks!!
Thank you…don’t know why this happened but your instructions helped me fix it. Running Windows 10 and office pro 2007
Great tip! Thanks!
Worked for me, too – thank you!!!
It’s Worked for me, too
thank you very much!
I had a similar issue with Outlook 2013 on Windows 10 and this helped me to fix it. Thank you very much!
Thank you so much. Solved!
Considering you published this in 2012, incredible not been debugged by Microsoft.
Thank you again. M
This problem was faced by only one user logging to TS 2008 r2 using outlook 2010.The issue was resolved.
Thanks.
Great tip. Thank you!!!! If it helps, I had to use the Control Key and the arrow keys at the same time to bring my window back into view. Worked like a charm.
Thank you, this worked !!!!
Man, you are a fucking god. Thanks a lot, what an annoying bug!!
Awesome, this post solved the issue. Many thanks!