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Finding Lightning add-on

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Greetings! I read everywhere that we must install the Lightning add-on to use the calendar feature in Thunderbird. But when I search for this add-on, I get a bazillion options, none of which appears Lightning. There is something called Lightning Calendar Tabs that keeps coming up. Is this it? Doesn't seem so.

Where can one download/install the Lightning add-on?

Thank you.

Greetings! I read everywhere that we must install the Lightning add-on to use the calendar feature in Thunderbird. But when I search for this add-on, I get a bazillion options, none of which appears Lightning. There is something called Lightning Calendar Tabs that keeps coming up. Is this it? Doesn't seem so. Where can one download/install the Lightning add-on? Thank you.

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Lightning was discontinued when the Calendar was integrated into the base application in version 78 See https://www.thunderbird.net/en-US/thunderbird/78.0/releasenotes/

Perhaps read the user support article on calendars. https://support.mozilla.org/en-US/kb/creating-new-calendars.

The standard shortcut key to open the calendar tab is Alt+3

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