For some reason, zoho mail UI now has a left extension with icons down the side : Mail, Calendar, Tasks, Notes, etc. Then a column starting with the blue "New Mail" box , then STREAMS, FOLDERS, TAGS, VIEWS. All that takes up about a quarter of the window. Then, finally Mail. It only shows one folder at a time in the drop-down box. i.e. Inbox, Trash , Sent, etc.

How do I only show Mail? And get rid of all the stuff on the left?