USPS created Informed Address to help mailers derive more value from marketing mail:
Develop high-fidelity prototypes from user stories with required acceptance criteria and research from third-party partners in order gain approval to proceed to Pilot Program testing.
This pilot was developed to give a mailer the ability to upload a list of email addresses and convert them into single-use encrypted labels, which can be used to deliver a piece of mail.
Through Agile development principles, high-fidelity prototypes were developed from user stories with required acceptance criteria and research from third-party partners.