As much as i dislike Teams (and other Microsoft products), i have to say that the most recent version of Outlook (on desktop) is actually not bad. I've also heard folks speak highly of outlook web, but i rarely use it. Given the choice, I still prefer Thunderbird personally (on linux). But for many folks - especially lay people who happen to use Windows - i just recommend desktop outlook (and remind them to make sure they keep up with their system updates and MS Defender and other such security updates), and then call it a day.
Outlook at least offers good performance. The ui could be better. On the other hand teams takes more resources than excel, my ide and browser with 100 tabs.