usps priority mail does it require a signature

usps priority mail does it require a signature USPS Priority Mail does it require a signature only if the sender has specifically purchased Signature Confirmation as an add-on. Otherwise, Priority Mail packages are typically delivered without requiring a recipient’s signature. However, if the package is high value, or if the address has delivery restrictions, USPS may leave a notice instead of delivering directly. Customers can track the package and request redelivery or pickup. Signature service adds security, especially for expensive or sensitive items.