Win 10 comes with mail, from there you can add any pop3 or live account. I have Verizon, optimum and live running. For $400 or $100/year for 4 seats you can get office 360 (the $100 updates the $400 permanent 1 seat does not)
My suggestion is to move to an online platform and use mail. Mail has some quirks, but almost all email providers have a web based interface. So you use mail to see what is in your inbox and delete the crap and then the web for the things that are more important.
I’ve had enough stand alone mail clients die and take everything.
Gmail and the like are better to me.