Is there a good Android app that lets you see your incoming mail before it's delivered?

Informed Delivery® Mobile is a free official service from the United States Postal Service that offers a digital preview of physical mail. Its core function is to send users a daily email digest containing grayscale images of the exterior, address side of letter-sized mailpieces scheduled for delivery that day. This allows residents to see what bills, catalogs, or letters are coming, which is particularly useful for planning or identifying important correspondence while away from home. The app integrates this feature with package tracking, providing a consolidated view of all incoming items with estimated delivery dates and a map for certain tracked packages.

For use cases, it benefits frequent travelers who want to monitor their home mailbox, individuals managing household admin who need a heads-up on time-sensitive documents, or anyone wanting to verify a specific piece of mail was sent. A key feature is the ability to report if a mailpiece shown in the digest does not arrive, initiating a search request. Notifications can be configured for package delivery and daily digest availability.

However, the service has limitations. It is only available for eligible residential addresses, not business P.O. Boxes in all areas, and the image preview is limited to mail processed through automated equipment. The images are in black and white and do not show the contents. Some user reviews indicate that notifications can occasionally be delayed compared to the physical delivery, and a small subset of users report reliability issues with the login or image generation. Despite these minor imperfections, it provides a unique and practical utility not offered by standard package tracker apps.