Madeira Beach, FL, Letter Carrier Lance Carswell scans a package in the Postal Service’s new TV ad. You’ll know right when your packages arrive. That’s the message of a new television advertisement that encourages customers to use the Postal Service for timely and accurate package shipping and delivery. The new spot promotes real-time delivery notifications, a service that alerts customers when their packages arrive. The alerts are available year-round through My USPS.com. The 15-second commercial, which will run through March, also can be viewed on Blue and the Postal Service’s YouTube channel.