P.S. I should mention that although I fixed our family mail server to work with the #Windows Mail app, I don't actually think my daughter or anyone else should be using it, because it's a #privacy and #infosec nightmare. The app stores the user's credentials and emails on #Microsoft servers; logs into the user's email account from those servers; and displays targeted ads that look just like email messages and can't be disabled. It's a case study in shitty tech. Use Thunderbird!