Re: dominate corporate email client is Outlook.
I was told that this broke with TB 52, which is unfortunate. Sticking with the previous version for now, hopefully someone will get on the ball about getting this back up to date. It's a TB addon that adds an EWS provider, enabling calendars and what-not. I've been using it for about a year, with basically no issues. https://github.com/Ericsson/exchangecalendar/releases