I am running Tahoe 26, and this morning I sat down to open my mail (Mail 16), but the "All Inboxes" is missing. I have searched, and everyone says to hover your mouse over Favorites, and a (+) will show up. This does not happen. There is NO (+) to add anything. I need help, please, to figure out how to add my "All Inboxes" back to Favorites. I have far too many emails to scroll through each one to see new ones. The All Inboxes simplified this process, and I am desperate to get it back. Can anyone help me, please?

