Multifactor Authentication Required for Access to LiteBlueBlueLite is a user-friendly online platform provided by USPS. It is developed for trouble-free access to staff advantages, calendars, salary, and more. Using Blue Lite, USPS employees can stay informed about their job details, connect with colleagues, and handle various HR tasks. Liteblue USPS aims to optimize USPS operations and establish a more effective work environment.