Apple's system doesn't work. At least not for everyone. https://www.grepular.com/Apples_Protect_Mail_Activity_Doesnt_Work https://www.grepular.com/Apples_Protec

Apple's system doesn't work. At least not for everyone. https://www.grepular.com/Apples_Protect_Mail_Activity_Doesnt_Work https://www.grepular.com/Apples_Protect_Mail_Activity_Doesnt...