Multifactor Authentication Now Required for SelfService ProfileBlueLite is a user-friendly online platform provided by USPS. It is developed for easy access to employee advantages, calendars, payroll, and more. Using BlueLite, USPS employees can stay informed about their work details, connect with colleagues, and organize various HR tasks. Liteblue USPS aims to simplify USPS operations and create a more productive work environment.