Just added an Outlook account from @GoDaddy to Apple Mail. The process is a little convoluted, but I stumbled upon it on my own and will share here. 1) Login to your account via web on outlook dot com (this should work fine) 2) Download Outlook, install, and add your account (this will fail, and that's OK) 3) Now add on Apple Mail, and it'll work. Not sure why (suspect it's a chain priming issue), but you have to follow exactly in that order. 🤣