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Thunderbird Adds Native Microsoft Exchange Email Support - The Thunderbird Blog
(blog.thunderbird.net)
This is a most excellent place for technology news and articles.
Awesome. I really needed this about 5 years ago, but I'm glad they've added it for sure.
I've been using Nine as exchange client since 2014, it's working great. Didn't receive any updates in well over a year though, but that's hopefully because there's nothing needed.