The Mailbox Locker is a office-style mailbox unit found in various different types of areas, not really confined to one type. It's a modest container, as in it will have nothing that'll define a run, but the loot pool is decent enough that stopping for one is rarely a mistake. The base pool covers common crafting staples: Duct Tape, Fabric, Rope, Plastic Parts, and Speaker Component are the useful pulls, while Canister and Bloated Tuna Can are the filler tier. Nothing here is exciting on its own, but these materials accumulate across a full sweep and are always finding their way into mid-tier crafting recipes, valuables, and quest/project items. What elevates the Mailbox Locker above its modest base pool is the upside: Mods, Keys, Weapons, and Quick-Use items can all drop here. That's a meaningful ceiling for what looks like a low-key residential container. Any single Mailbox Locker could hand you a Mod or a weapon, which reframes it as a container worth checking rather than skipping. Found across Hospital and Plaza Rosa in Buried City, Checkpoint in Blue Gate, and additional sectors, Mailbox Lockers tend to cluster in any type of zone, but are most common on runs through civilian areas, where they naturally appear in groups — lobbies, corridors, and plazas often have several in close proximity, meaning a quick sweep of the area can net multiple stops with minimal backtracking. Worth looting! Base loot is okay, upside is real, and the animation is fast. Don't skip them when they're in your path!