Mail Boss 7506 Mail Manager Security Mailbox and 7121 Mounting Post, Black

Why it's worth it

The 7506 Mail Manager pairs the same welded steel box, anti-pry latch and baffled slot with Mail Boss's 7121 mounting post. Buying them together means the post is actually rated for the weight, which is the step most people get wrong when they upgrade a mailbox.

The security story here is identical to our top pick: same 14- and 16-gauge galvanized welded steel, same 12-disc wafer lock, same anti-pry latch, same baffle door and stainless hinges. What changes is what's underneath. The 7121 post is 10- and 14-gauge galvanized steel, so it won't flex or lean under a heavy box the way a hollow decorative post does after a couple of winters.

The post is the part people underestimate. A steel box on a rotting 4x4 is a box that comes off in one pull, and then the lock is just a lock on a stolen container. Buying the matched post takes that decision away from you, and it ships with four bolts and a mounting pattern that already lines up. Owners whose neighbors got hit report scratches and pry marks on this one and nothing more.

From our review of 6 mailbox security lock boxes

What we like

• +The security story here is identical to our top pick: same 14- and 16-gauge galvanized welded steel, same 12-disc wafer lock,…
• +The post is the part people underestimate
• +It's also the simpler purchase if you're starting from nothing — a new build, a replaced post, a box that a plow took out

What to know

• –The post doesn't reach carrier height on its own
• –You're also buying a post you may not need