Certified Mail (US)

Certified Mail is a service offered by the United States Postal Service that provides proof of mailing and delivery. When you send something via Certified Mail, the postal service records the date and recipient's signature upon delivery, creating an official receipt. This ensures you have documented evidence that your letter or package was sent and received, which is particularly useful for legal, business, or important personal communications. The sender can track the item’s status online, and it often includes optional return receipt to confirm the recipient's signature and address.