Code of Federal Regulations Title 39. Postal Service § 39.122.1 Ancillary special services

(1) For the following special services, the service standard for the electronic provision of delivery-related information is that it be made available to the sender no later than 24 hours after the time of the recorded delivery-related scan performed by the Postal Service on mail for which the following special services have been purchased:  Domestic Certified Mail^TM service, domestic Delivery Confirmation^TM service, domestic and inbound international Registered Mail^TM service, domestic Collect On Delivery, domestic electronic Return Receipt, and domestic Signature Confirmation^TM scans.

(2) For domestic electronic Address Correction Service, the service standard for the electronic provision of address change information is that it be made available to the sender no later than 24 hours after the time of the scan of the mailpiece by the Postal Automated Redirection System.