How can I create keyboard shortcuts in Mail.app that do not require modifiers? For example, I'd like j/k to scroll the message pane. Maybe n/p to navigate between messages. Maybe N/P to navigate to unread messages. Maybe a to archve a message.
The key point here is that the shortcuts should not require modifiers: No Command, no Ctrl, no Option.
The gmail shortcuts are different, but similar in that they don't require modifiers.