Beyond just email, the group scheduling and calendar experience is pretty much the best you're going to find. Google does pretty good, but it's still not nearly as good as the integrated corp experience with Outlook for scheduling... that said, I hate that I now get teams messages for meetings more than a business day in the future... I have outlook for that, I don't need it in teams... having a calendar and notifications in teams is fine, but limit notifications to things in the near future.