Postal Service replacing universal mail keys 00:29. WASHINGTON - The U.S. Postal Service has announced a new measure to keep mail carriers safe. The number of letter carrier robberies is on the ...

A former U.S. Postal Service employee is headed to prison after federal prosecutors said she sold a USPS key for $2,500 — resulting in hundreds of pieces of mail stolen in Alabama.

When police arrested Smalling, he was found with a counterfeit USPS arrow key, also known as a master key, which unlocks certain mailboxes within a specific zip code. "There's only so much you can ...