Staying safe at the post office can be stressful these days. As an alternative, you can sign up for Informed Delivery, free from the U.S. Postal Service (informeddelivery.usps.com). You’ll get a daily email with a grayscale image of the items coming your way. If something you’re waiting for has not arrived, you can skip the trip. The service is ad-supported, so direct mail advertisers may show up digitally in your email.