Mozilla Calendar Feature for Thunderbird Released

An early version of Lightning, the calendar integrated with Mozilla Thunderbird is now available. Keep in mind that this is an early, testing release, and not a final version; therefore, there is a much higher chance of data loss, and several features (like undo/redo) have not yet been implemented. If you have just been dying to try it out, now is your chance; however, use it with caution!

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