I've been using both Thunderbird and Google Calendar for over 15 years. Although most often those two apps are used separately, sometimes I like to be able to use them together in a single location. For that, I turn to Thunderbird.
When Mozilla first introduced the ability to add Google Calendars, it was a rather cumbersome process. With the latest releases of the email client, adding those calendars has been greatly simplified. In fact, it's become so easy that the most challenging part is typing your Gmail address and then giving Thunderbird permission by clicking a couple of buttons. You no longer have to locate a hidden address within Google Calendar or jump through other hoops.
Also: Google Calendar just added bookable appointment scheduling, and it's pretty sweet
It really is that easy.
Let me show you.
What you'll need:To do this, you'll need two things -- a valid Google account and the Thunderbird email client installed on your desktop or laptop. That's it. Let's get to work. I will demonstrate this on the most recent release of Thunderbird, which I would highly suggest you upgrade to immediately (as it offers a much cleaner interface).
The first thing to do is open the Thunderbird email client and then click the Calendar icon near the top right of the app window.
The fastest way to access Thunderbird's Calendar feature is from the top left corner of the app.
Jack Wallen/At the bottom left corner of Thunderbird, you'll see New Calendar. Click that to create the calendar.
Adding a new Calendar happens from the bottom left corner of the Thunderbird Calendar window.
Jack Wallen/In the resulting window, select On the Network and click Next.
You can create either local or remote calendars in Thunderbird.
Jack Wallen/Also: How to quickly search Google Calendar for past or future events
In the next window, type your Gmail address as the Username. Thunderbird will autofill the Location. Once you've done that, click Find Calendars.
Use your Gmail address as your username.
Jack Wallen/A new window will appear, allowing you to sign into the Gmail account you intend to use. In that window, type your Gmail address and click Next. Finish going through the Google sign-in wizard and, when prompted, click Allow to give Thunderbird the necessary permissions.
Make sure to select the correct Gmail address (if you have multiple accounts).
Jack Wallen/In the final window of the calendar add wizard, select only the calendar(s) you want to add to Thunderbird and then click Subscribe. Thunderbird will then begin to sync your Google Calendar. Depending on how many entries you have in your calendar, this can take some time, so be patient as it syncs.
Also: How to create multiple Google Calendars (and why you should)
And that's all there is to adding your Google Calendar to Thunderbird. If you prefer to manage your email and calendar in one place, this could be just what you've been looking for.