USCIS recently posted a notice informing the public that it has fully
implemented the Secure Mail Initiative (SMI). This initiative uses the
U.S. Postal Service’s (USPS) Priority Mail with Delivery Confirmation
option to deliver certain immigration documents in a secure, safe and
timely manner. This initiative was made possible through a partnership
between USCIS and USPS and enables USCIS to confirm that permanent
residence cards and documents related to travel and employment
authorization were successfully delivered to recipients.
Through the use of USPS tracking data, applicants can easily access
delivery information and stay up to date on the status of their
documents. In addition, the new initiative will enable a speedier
delivery process; on average, documents sent through priority mail will
arrive two to four business days earlier than if they were sent via
first-class mail.