This simple How To, talks you through step by step to how to set up your SoGo Calendar in Thunderbird. This is how to set up SoGo Calendar in Thunderbird.
Open Thunderbird and click the Calendar tab at the top of the screen, or click the calendar icon to the right.
Right click on an existing calendar and select New Calendar… in the menu that appears.
Select On the network and click Next.
Log in to Webmail and click on calendar, right click on the calendar you want to set up and select properties. Another tab will open, select Links to this Calendar
Copy the unique CalDAV url for your calendar and go back to Thunderbird.
Select CalDAV under format and paste in the CalDAV url for Location. Click Next to continue.
Enter a name for your calendar and select a colour and click Next.
Your calendar has now been created, click Finish to close.
Note: Sometimes you need to confirm your login details. Enter your email address and password when asked.
To make sure everything is set up correctly, create an event in Webmail, in the calendar you have just set up.
Go back to Thunderbird and click Synchronize in the top left corner.
The event you just created in Webmail should now appear in your calendar in Thunderbird. If the calendar doesn’t sync properly, please check your settings and try again.