Mozilla Thunderbird review Catch up with emails, appointments and headlines, all in one place By Cat Ellis 10 May 2017. Adding a Google calendar to Thunderbird is easy too (use the main menu. Thanks, I’ve got it set up but I’m missing one thing. I can’t visualize the tasks associated to my google account, with the extension provider google calendar they were shown in version 68 but that extension doesn’t work in the new thunderbird.

If Lightning is installed and enabled, the calendar can be displayed from the main window under Events & Tasks/Calendar (press Alt if the Menu Bar is hidden), or Ctrl+Shift+C, or by clicking the calendar icon at the right end of the tab bar (see picture). The Provider add-on, like most add-ons, requires a restart to be enabled.

This article describes how to change the preferences (name, color, location etc.) of a single calendar.

Accessing calendar preferences

To change the preferences of a single calendar, either double-click on it or highlight the calendar you want to edit, then click the Edit menu from the top and select Calendar properties.

Available options

Mozilla Thunderbird Calendar Extension

• Calendar Name: Here you can choose to change the name of your calendar, for example from Home to Private.
• Color: By clicking on the box next to the word Color, you can change the background of all your calendar events to something more pleasing to you than blue, like mauve, purple, or yellow.
• Location: This is the location of your calendar. Do not edit this unless you know what you are doing.
• E-Mail: This is the email address Thunderbird uses to send invitations for events.
• Refresh Calendar: This is how frequent Thunderbird will check for changes on the calendar details.
• Read Only: If checked, this makes the calendar not editable by default. This is very nice for shared office calendars that you don't want to edit by accident. (Can also be made read-only by clicking on the 'color' of the calendar in the calendar tab.)
• Show Reminders: This enables/disables the reminders portion of the calendar.
• Offline Support: If checked, your remote calendar is synchronized on your hard disk. This allows you to read and write to your calendar while offline and can also reduce network traffic.