No extra service - Your letter will be sent via USPS First Class service without any of the extra services below.
Certified Mail - an additional USD $7.99 per letter - A special service that provides proof of mailing via a receipt to the sender. The sender is notified when the mailing was delivered or that a delivery attempt was made.
Certified Mail with Electronic Return Receipt - an additional USD $9.49 per letter - It's Certified Mail with the additional service of getting an electronic delivery record showing the recipient's signature when they received the letter.
Registered Mail - an additional USD $19.99 per letter - Get maximum security for your valuable items. Tracking service begins from the time the we present the mail to the carrier to the point of delivery. An accountable individual must sign for the Registered Mail piece each time it changes hands and each intermediary office must prepare control logs. Registered Mail pieces also require specific packaging and sealing methods for security and protection. When not in transit, Registered Mail pieces must be stored in a locked safe, room, or cage separated from other mail.