From AppSource, like agsteele pointed out. It's also the "oficial" way, I followed the instruction in the post from agsteele. It can be installed, but the login fails and I suspect it's because the Addin uses the WebView (not WebView2) which is IE based and the Evernote Servers do not accept this anymore. It would be nice to get an official response... Until recently, I had the old COM Addins working perfectly in Outlook, but the update uninstalled it.