Today I opened my (Apple) mail and it had a completely new look. What I mean is when I opened a message it would let me look at ONLY one message and nothing else, with ONLY the options, done forward or reply. This really panicked me becuase I often toggle between drafts I save, other messages and cut/paste between them and I could no longer do this. Everything but ONE message was grayed out and not accessible.
Well to help save you the panic, IT'S WAS BECAUSE I WAS IN FULL SCREEN MODE. Just go back up view on top and un-check full screen mode. This way you can once again toggle (window) between messages, drafts and other email accounts or leave message being composed in the background.
I could not find another post that addresses this and after I resolved my own issue hope this helps you...
Well to help save you the panic, IT'S WAS BECAUSE I WAS IN FULL SCREEN MODE. Just go back up view on top and un-check full screen mode. This way you can once again toggle (window) between messages, drafts and other email accounts or leave message being composed in the background.
I could not find another post that addresses this and after I resolved my own issue hope this helps you...