Multifactor Authentication Required for Access to LiteBlue Liteblue is a user-friendly online platform provided by USPS. It is created for easy access to staff benefits, schedules, salary, and additional. Using Liteblue, USPS employees can stay well-informed about their employment details, connect with colleagues, and manage various HR tasks. Liteblue USPS aims to optimize USPS operations and establish a more efficient work environment.