Unable to fix the mail application as it would not display incoming mail without selecting "new View"...decided to re-install the OS that I had on the computer (10.11) without asking me...I got 10.13 and apple mail is still broken and now my MS office 2011 will be DEAD....Would it be asking too much if Apple put a text: Do you want to keep your old OS or do you want to update your mac with 10.13??????? The computer is now very slow as well....the mail is still broken.....................Apple's Geeks don't have the judgement to think of asking the user aka customer what they want....I guess its not really my computer...its Apple's