Proof of Mailing: This USPS approved Manifest has also been called the Firm Book or Firm Sheet.  This manifest details each letter you are mailing, postage and USPS Certified Mail Special Service fees.

 In Route Certified Mail Letter Tracking:   

Tracking-USPS-Certified-Letter

 Proof of Delivery – Electronic Return Receipt:

Electronic-Return-Receipt-ERR-USPS-Certified-Mail

USPS Signature Image: 
USPS provides a PDF file displaying to you an image from each mailing who signed for the letter when it was delivered.  You may purchase Signatures before or after your mailing.  Buying the signature after the mailing allows you to buy any images you need or you may purchase all the images at the time of mailing.

PDF-Signature-Confirmation-USPS-Certified-Mail