There's no need to pay extra for tracking, all USPS® shipping services come with it for free! That includes all First Class Package®, Priority Mail®, and Parcel Select® services.
Every USPS® package gets a tracking number that's printed on the label. You can see the latest tracking status update in Pirate Ship, and Pirate Ship can automatically email your recipient the tracking number so they can track their package online to keep an eye on their delivery. Learn more about tracking emails here.