How to Set Up Google Calendar in Thunderbird Without a Plugin (Using CalDAV)

If you want to add your Google Calendar to Thunderbird without using a plugin, you can do so by setting up a CalDAV link. Follow these steps:

Step 1: Get Your Google Calendar ID

1. Open Google Calendar in your web browser.
2. Find the calendar you want to add in Thunderbird. Click on the three dots next to it and select "Settings and sharing".
3. Scroll down to the "Integrate calendar" section.
4. Copy the Calendar ID (it may look like an email address or a long string).

Step 2: Build the CalDAV Link

The CalDAV URL follows this format:

https://apidata.googleusercontent.com/caldav/v2/your_calendar_id/events

• Replace your_calendar_id with the Calendar ID you copied in Step 1.
• If your Calendar ID is an email address (e.g., This email address is being protected from spambots. You need JavaScript enabled to view it.), replace @ with %40.
  • Example: If your Calendar ID is This email address is being protected from spambots. You need JavaScript enabled to view it., the CalDAV URL would be:
    

    https://apidata.googleusercontent.com/caldav/v2/example%40gmail.com/events​

Step 3: Add the Calendar to Thunderbird

1. Open Thunderbird and go to the Calendar tab.
2. Click New Calendar.
3. Select "On the Network" and click Next.
4. Choose CalDAV as the format. If it ask.
5. Enter your Google email address as the username
6. In the Location field, enter the CalDAV link you created in Step 2.
7. Click Find Calendars.
8. Select the calendar you want to display.
9. When prompted, add your password or an App Password if you have 2-Step Verification enabled.
10. Click Finish to save the settings.

Your Google Calendar should now be visible and synced in Thunderbird.