## Address and Eligibility Considerations The service supports most residential addresses across the United States. Enter the address in the precise format used by USPS for delivery to avoid mismatches. Business addresses and certain specialized mail services generally fall outside standard eligibility. If multiple people share an address, only one primary account holder typically manages the Informed Delivery profile, though household members may receive shared notifications depending on setup choices. Keep your mailing address current with USPS to prevent delivery issues that could delay the invitation notice. ## What to Do If the Code Does Not Arrive Allow several business days for standard mail delivery after submitting the request. Confirm that your mailbox is accessible and that regular mail continues to arrive without interruption. Double-check the address submitted during registration for any typos or incomplete unit details. If the notice still does not appear, restart the request process on the website or contact USPS customer support through official phone or online help channels. Local post office staff can also review address records and advise on next steps for verification. ## Additional Guidance for Smooth Enrollment Use a secure internet connection and an up-to-date browser when accessing the USPS site. Have your email account ready for confirmation messages that accompany account creation. After successful enrollment, review privacy settings to control how mail images are shared and stored. For the most reliable instructions and any address-specific details, rely exclusively on the official USPS Informed Delivery pages rather than third-party summaries. If technical problems arise during registration, the site’s help resources or USPS support can resolve common account or verification errors without needing a new code request.