You got a new credit card, maybe, or signed up for a food-delivery service. Let the emailing begin. First there’s one to verify your new account, then a message to confirm that you’ve verified your new account, then an offer for an upgrade or a discount. A service I recently started using sent four emails for a single activity, counting log-in notices, confirmations, receipts, and confirmations of the confirmations. Workday, the software that manages HR and payroll for my office, emailed me an alert to approve the hours I had already approved. Online retailers seem to send at least three logistical emails for every order—when it’s placed, when it’s shipped, and when it’s been delivered. Then they send a handful more: a customer-satisfaction survey, a nag to fill out a customer-satisfaction survey, a thank-you for filling out a customer-satisfaction survey. Also in your inbox: All of the email you get that is, you know, actually related to your job, your interests, or your personal life. Forget reading or responding; even just finding those messages amid …