USPS Window Academy Practice Exam

Requiring a signature at delivery is the defining feature of Signature Confirmation. This service is used when you need proof that someone actually received the item, because the carrier must obtain the recipient’s signature before handing over the mailpiece. You can also add Adult Signature to ensure the signer is an adult, adding another layer of verification.

Standard mail services like Priority Mail or First-Class Mail do not mandate a signature upon delivery; they focus on speed and tracking rather than proof of receipt. Certified Mail provides proof of mailing and delivery and can include a return receipt, but the explicit, built-in requirement for a recipient’s signature at delivery is the hallmark of Signature Confirmation (with the option for Adult Signature).