Geek to Live: Eight killer Thunderbird extensions - Lifehacker. Calendar:Lightning:0.1:Release Notes. What is Lightning 0.1?
Lightning 0.1 is an embedding of the Mozilla calendar code specifically designed to run inside Mozilla Thunderbird 1.5 and 1.5.0.*. This release is a preliminary, non-production release designed to showcase the work that's been done and allow contributors to help us test it out. Mail/news. Mozilla Mail Archiving and Retrieval.