The Maximizing Agency Integration on Letter Theft Act of 2025 directs federal agencies to work together to combat organized postal theft. Within 180 days of the law's enactment, the Attorney General, Secretary of Homeland Security, Postmaster General, and other relevant agencies must develop a coordinated strategy to improve information sharing about postal crime networks, help state and local law enforcement prosecute these crimes, and increase cooperation between federal and local authorities. The agencies must then submit a joint report to Congress detailing their strategy, and within one year, the Comptroller General must publish a separate report on how the private sector and law enforcement can work together to prevent organized postal theft. The bill defines organized postal crime as coordinated theft or fraud schemes involving mail intended for interstate commerce and applies to any federal agency involved in investigating or sharing information about these criminal networks.