"y" means "remove from current view", to be exact. So if you click a message from the "Work" label, it removes the "Work" label. And if you click a message fro

"y" means "remove from current view", to be exact. So if you click a message from the "Work" label, it removes the "Work" label. And if you click a message from Inbox and hit "y", it removes it from Inbox (i.e. archives it).