Mail Manager and Package Master named “Best Locking Mailboxes of 2021”

Vanessa Spilios of wrote this fantastic write up of the importance of having a mailbox with a lock and key, in her article The 5 Best Locking Mailboxes In 2021 and we were honored to be named as 2 of her top picks for mailbox security.

“A good anti-theft mailbox provides extra peace of mind when you’re expecting important letters or parcels. Made from sturdy materials like galvanized steel and cast aluminum, the best locking mailboxes are outfitted with features like baffle doors to prevent fishing and magnetic closures to seal out moisture. They’re available in both post- and wall-mounted options, and some use combination locks instead of keys.

The first consideration: Where do you plan to place the mailbox? Standard curbside boxes secure to posts that you can position in the ground, while mounted mailboxes sit flush against a flat wall. Curbside security mailboxes have more interior capacity, and the larger slots can also accept a wider range of mail — and some can even accommodate packages. Since these slots are bigger, you’ll want to look for magnetic closures that keep out rain, as well as baffle doors that prevent fishing (similar to the shields you encounter at a post office drop box). One thing to note: Curbside boxes tend to be pricey, and oftentimes you’ll have to purchase a post separately. Wall-mounted mailboxes, on the other hand, have less capacity, but if you check your mail frequently and aren’t concerned about packages being locked away, they’re a much more affordable choice. And although they may not have upgraded features like baffle doors and magnetic closures, the incoming slots are generally too narrow to necessitate them.

For the most part, the best locking residential mailboxes come with multiple keys, but you can also find styles that use combination locks, which allow you to give the code to anyone you like — and then change it as needed for security. One last thing: Curbside looking mailboxes need to be United States Postal Service-approved (wall-mounted models do not, but you will need approval if you’re switching from a curbside to wall model). For convenience, all of these are USPS- or Post Master General-approved. With all that, these are the best locking mailboxes of 2021.

Boasting an impressive 4.8-star overall rating on Amazon after more than 5,000 reviews, the Mail Boss Mail Manager is made with durable galvanized steel to reduce pry points. The incoming slot is large enough to accept parcels like mail bundles, magazines, and padded envelopes, but the baffle door prevents fishing while the magnetic closure seals out rain and snow. This mailbox has a red outgoing mail flag on the exterior, along with a concealed clip on the interior, so your mail carrier can pick up outgoing envelopes when making deliveries. According to reviewers, the door must be in the locked position to remain closed, a helpful feature that ensures the mailbox will always be locked behind you.

The USPS-approved Mail Manager comes with three keys and can be mounted on any standard 4-by-4-inch post. For convenience, you can purchase an in-ground post or surface-mounted post from the Mail Boss store on Amazon.

Helpful review: “Having worked in the stamped steel industry for the past 32 years, I can say this product is one of the most well-built locking mailboxes on the market. […] Love the box, four neighbors ordering the same to resolve mail theft, a huge problem today.”

  • Interior dimensions: 18.6 x 10.75 x 11.25 inches
  • Mail slot dimensions: 10.2 x 3.5 inches
  • Available colors: black, bronze, granite, white
The Best Locking Mailbox For Packages

If you travel frequently or do a lot of online shopping, the Package Master mailbox from Mail Boss has a similar design to the first pick but is sized to accept larger packages and hold more mail. The incoming slot is a full 4.5-inches tall to allow for thick parcels, but a baffle door prevents fishing. Made with galvanized steel, this USPS-approved mailbox has an anti-pry lock, magnetic doors to seal out rain and snow, and a flag and interior shelf for outgoing mail.

Also included are three keys, as well as reflective house numbers that can be affixed to the side or front of the mailbox for easy viewing. The base of the mailbox has a fast-track mounting plate for secure installation to any 4-by-4-foot post, and you can buy an in-ground post or surface-mounted post.

Helpful review: “I get a lot of Amazon Prime shipments, and packages slip right into this box and sneaky hands can’t snatch them out of this box. Lots of mail thefts in my area, so now I feel comfortable that my packages are secure. Love it.”

  • Interior dimensions: 21.5 x 12 x 16.5 inches
  • Mail slot dimensions: not listed, but accepts packages up to 10.5 x 4.5 x 3.5 inches

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