Your email inbox is a stream of messages that all aim to grab your attention. Some subject lines are intriguing, but you’ve had to become a master of sorting out the noise. You go directly to messages from proven senders — those who have built a track record of delivering value or entertainment. At some point in the past, these authors crafted messages that resonated with you. You keep reading what they send because their words have weaved a path to your heart or reliably present useful information.