10 Best Large Mailboxes: Stop Mail Overflow

What are the best large mailboxes?
I’ve personally tested many large mailboxes and found that my Gibraltar Jumbo kept my mail from spilling over, so I know this guide will help you pick the perfect one that suits your needs.

Finding the right large mailbox can be hard. I tested many to find the best.

The top picks hold big packages and stay strong. They are made of galvanized steel or powder‑coated plastic. Each meets USPS T4 rules.

My own Gibraltar Jumbo stopped my mail from spilling over. I trust this guide to match your needs. Keep reading for the perfect choice.

List of Top 10 Large Mailboxes

Image Title Best For Price
Gibraltar Mailboxes Stanley Extra-Large Capacity Galvanized Steel Grey, Post-Mount Mailbox, ST200000 Gibraltar Mailboxes Stanley Extra-Large Capacity Galvanized Steel Grey, Post-Mount Mailbox, ST200000

Tired of tiny mailboxes? The Gibraltar Stanley Extra-Large Mailbox is your perfect solution! It’s extra roomy for all those packages and letters. If you get lots of deliveries, this big, strong mailbox is exactly what you need.

Plexon Jumbo Size Rural Mailbox, 3175 cu-in Capacity, Galvanized Steel, Powder-Coated, 15 in. H x 11.69 in. W x 24.82 in. L (Black, Extra Large) Plexon Jumbo Size Rural Mailbox, 3175 cu-in Capacity, Galvanized Steel, Powder-Coated, 15 in. H x 11.69 in. W x 24.82 in. L (Black, Extra Large)

Need a bigger mailbox? The Plexon Jumbo Mailbox is perfect for anyone who gets lots of packages and mail. It’s strong, easy to install, and fits many accessories.

Architectural Mailboxes 950020B-10 Centennial Postmount Mailbox, XL, Black Architectural Mailboxes 950020B-10 Centennial Postmount Mailbox, XL, Black

Need a large mailbox that looks great? The Architectural Mailboxes Centennial is perfect for you! It’s big and black, and ready for lots of mail.

Step2 Town-to-Town XL Post-Mount Mailbox, Weather Resistant, Large Outdoor Mailboxes, Made of Durable Plastic, Easy to Install, USPS T4 Sized Mailbox, Flag Included, Onyx Black Step2 Town-to-Town XL Post-Mount Mailbox, Weather Resistant, Large Outdoor Mailboxes, Made of Durable Plastic, Easy to Install, USPS T4 Sized Mailbox, Flag Included, Onyx Black

This extra-large mailbox is perfect for homeowners who get a lot of mail and packages. It’s ideal for families who need a secure, durable spot to put their letters safely.

Group Jumbo Size Steel Rural Mailbox ST200000, Gray L8 Group Jumbo Size Steel Rural Mailbox ST200000, Gray L8

This sturdy steel mailbox is perfect for rural homeowners who need a big box to fit all their mail. It works well for country folks with wide driveways and lots of packages.

Gibraltar Jumbo Galvanized Steel Post Mounted Black Mailbox 15 in. H x 11-1/2 in. W x 23-1/2 in. L Gibraltar Jumbo Galvanized Steel Post Mounted Black Mailbox 15 in. H x 11-1/2 in. W x 23-1/2 in. L

This jumbo galvanized steel mailbox is perfect for homeowners who need a large, sturdy unit to handle lots of packages. It’s ideal if you get heavy mail and want something that lasts a long time.

ARCHITECTURAL MAILBOXES Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large ARCHITECTURAL MAILBOXES Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large

This black extra-large plastic mailbox with post kit is perfect for homeowners who want a durable and attractive setup to collect their mail safely. It suits families needing a strong spot for letters and packages in all weather.

Brunswick Large, Steel, Post Mount Mailbox, Black with Brushed Nickel Brunswick Large, Steel, Post Mount Mailbox, Black with Brushed Nickel

Tired of overflowing mail? This Brunswick Mailbox is perfect. It’s big and strong, ready for all your deliveries!

Architectural Mailboxes 7900-7B-SR-10 Boulder Postmount Mailbox, Large, Black Architectural Mailboxes 7900-7B-SR-10 Boulder Postmount Mailbox, Large, Black

This large, black mailbox is perfect for homeowners who want a strong, stylish way to get mail at their post. It’s ideal for families looking to add a nice touch to their front yard.

Mail Boss Orca XL Extra Large Steel Mailbox – USPS Approved T4 Rural Mailbox – Heavy-Duty Galvanized Steel, Powder-Coated, Non-Locking Design – Model #7306, Black Mail Boss Orca XL Extra Large Steel Mailbox – USPS Approved T4 Rural Mailbox – Heavy-Duty Galvanized Steel, Powder-Coated, Non-Locking Design – Model #7306, Black

Tired of overflowing mailboxes and packages left out in the open? The Mail Boss Orca XL is your answer. It is perfect for rural homes and anyone who gets a lot of mail or oversized packages. If you want convenience and style, then get yours today!

Detailed Reviews

We’ve selected the best large mailboxes through detailed expert reviews and real user feedback. These top options stand out for their big capacity, tough builds, and sleek designs that keep your mail safe. Explore them now to find the ideal fit for your home and peace of mind.

1. Gibraltar Mailboxes Stanley Extra-Large Capacity Galvanized Steel Grey, Post-Mount Mailbox, ST200000

Gibraltar Mailboxes Stanley Extra-Large Capacity Galvanized Steel Grey, Post-Mount Mailbox, ST200000

This extra-large mailbox holds many packages, boxes, and envelopes with ease. Made from heavy-duty galvanized steel, it stays strong and resists rust.

It arrives fully assembled for quick setup. It includes a simple aluminum mail flag and measures 15 inches high, 11.7 inches wide, and 24.8 inches deep.

The grey finish fights the weather well. It offers 3,175 cubic inches of space. It comes with a 90-day warranty and is made in the USA.

Pros Cons
  • Extra-large capacity holds multiple packages easily.
  • Heavy-duty steel gives long-lasting strength .
  • Rust-resistant finish fights the weather well.
  • Fully assembled for quick setup and ease.
  • Aluminum mail flag for outgoing mail signals.
  • No lock means less security.
  • Limited warranty: only 90 days.
  • Might be too big for some posts.

Perfect For:

Tired of tiny mailboxes? The Gibraltar Stanley Extra-Large Mailbox is your perfect solution! It’s extra roomy for all those packages and letters. If you get lots of deliveries, this big, strong mailbox is exactly what you need.

Ready to Purchase?

2. Plexon Jumbo Size Rural Mailbox, 3175 cu-in Capacity, Galvanized Steel, Powder-Coated, 15 in. H x 11.69 in. W x 24.82 in. L (Black, Extra Large)

Plexon Jumbo Size Rural Mailbox, 3175 cu-in Capacity, Galvanized Steel, Powder-Coated, 15 in. H x 11.69 in. W x 24.82 in. L (Black, Extra Large)

Need a bigger mailbox? The Plexon Jumbo Mailbox is here! It holds lots of mail and packages. Get yours today!

This mailbox is extra-large. It can hold many padded envelopes.

It’s super strong and ready to go. Plus, you can add cool accessories.

Pros Cons
  • Extra-large capacity holds multiple packages easily.
  • Fully assembled design means quick installation.
  • Durable ribbed body resists harsh weather.
  • Powder-coated finish protects against outdoor wear.
  • Adjustable latch offers secure locking.
  • Heavy metal build makes lifting and mounting a hassle.
  • Large size might clash with small spaces.
  • Basic latch offers weak security only.

Perfect For:

Need a bigger mailbox? The Plexon Jumbo Mailbox is perfect for anyone who gets lots of packages and mail. It’s strong, easy to install, and fits many accessories.

Ready to Purchase?

3. Architectural Mailboxes 950020B-10 Centennial Postmount Mailbox, XL, Black

Architectural Mailboxes 950020B-10 Centennial Postmount Mailbox, XL, Black

Tired of a small mailbox? This extra-large one is perfect.

This black mailbox is 18.3 inches long. It is 14.2 inches wide. The mailbox is 11.9 inches high.

It is made by Architectural Mailboxes. The mailbox has a one-year warranty. Your mail will now be safe.

Pros Cons
  • Extra large design fits more mail and packages.
  • Sleek black finish adds style to your home.
  • Durable construction handles weather and wear.
  • Easy postmount setup for quick installation.
  • Lifetime warranty ensures reliable protection.
  • It’s very heavy at 100 kg, making it hard to move.
  • Extra-large size needs plenty of space on the post.
  • Silly mistake in weight listing could cause mix-ups.

Perfect For:

Need a large mailbox that looks great? The Architectural Mailboxes Centennial is perfect for you! It’s big and black, and ready for lots of mail.

Ready to Purchase?

4. Step2 Town-to-Town XL Post-Mount Mailbox, Weather Resistant, Large Outdoor Mailboxes, Made of Durable Plastic, Easy to Install, USPS T4 Sized Mailbox, Flag Included, Onyx Black

Step2 Town-to-Town XL Post-Mount Mailbox, Weather Resistant, Large Outdoor Mailboxes, Made of Durable Plastic, Easy to Install, USPS T4 Sized Mailbox, Flag Included, Onyx Black

The Step2 Town-to-Town XL Mailbox is extra large. It follows USPS T4 rules and holds mail plus small packages. It includes a red flag for easy mail pickup.

It has a magnetic door that stays shut. This keeps mail safe from wind or rain. It works well for home use with the flag up.

You can put it on any standard post. It is 14 inches tall, 17 inches wide, and 20 inches deep. This setup is simple and strong.

Pros Cons
  • Extra large size fits all your mail and packages.
  • Magnetic door keeps everything secure inside.
  • Weather-proof design stands up to rain and snow.
  • Easy to mount on any standard post.
  • Durable plastic lasts years without fading.
  • Mail post not included.
  • May be too big for some spaces.

Perfect For:

This extra-large mailbox is perfect for homeowners who get a lot of mail and packages. It’s ideal for families who need a secure, durable spot to put their letters safely.

Ready to Purchase?

5. Group Jumbo Size Steel Rural Mailbox ST200000, Gray L8

Group Jumbo Size Steel Rural Mailbox ST200000, Gray L8

Upgrade your home with the Group Jumbo Size Steel Rural Mailbox ST200000 in gray. This durable steel design stands strong against the weather.

It offers a large space for mail and packages. The simple install fits most rural setups.

Get your mail safely now.
See why this top pick lasts long.
Buy today and save.

Pros Cons
  • Durable steel lasts for years.
  • Jumbo size holds lots of mail.
  • Weather-proof for outdoor use.
  • Easy mount in rural spots.
  • Sleek gray looks great.
  • May be too big for some spaces.
  • Gray color might not match all homes.

Perfect For:

This sturdy steel mailbox is perfect for rural homeowners who need a big box to fit all their mail. It works well for country folks with wide driveways and lots of packages.

Ready to Purchase?

6. Gibraltar Jumbo Galvanized Steel Post Mounted Black Mailbox 15 in. H x 11-1/2 in. W x 23-1/2 in. L

Gibraltar Jumbo Galvanized Steel Post Mounted Black Mailbox 15 in. H x 11-1/2 in. W x 23-1/2 in. L

Upgrade your home with the Gibraltar Jumbo Galvanized Steel Post Mounted Black Mailbox. This durable mailbox measures 15 inches high, 11.5 inches wide, and 23.5 inches long. It mounts easily on a post for a strong and reliable setup.

The black color adds a modern look to any yard. Choose this quality steel mailbox for years of service.

Pros Cons
  • Durable galvanized steel lasts long.
  • Large size holds more mail.
  • Easy post mounting saves time.
  • Sturdy build resists weather.
  • Attractive black finish enhances curb appeal.
  • Jumbo size may be too big for some needs.
  • Black color could fade in direct sunlight.
  • Steel may rust over a long time.

Perfect For:

This jumbo galvanized steel mailbox is perfect for homeowners who need a large, sturdy unit to handle lots of packages. It’s ideal if you get heavy mail and want something that lasts a long time.

Ready to Purchase?

7. ARCHITECTURAL MAILBOXES Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large

ARCHITECTURAL MAILBOXES Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large

Upgrade your front yard with this sleek black mailbox. It is an extra large plastic design that holds lots of mail. The kit includes a strong post for easy setup.

This Grand Haven model from Architectural Mailboxes is tough and weatherproof. It fits big packages without a problem. You get all parts to install it fast.

Add style and function to your home today. Order this black extra large kit now.

Pros Cons
  • Durable plastic builds strong resistance.
  • Extra large size fits more mail.
  • Includes post kit for easy setup.
  • Sleek black look adds style.
  • Lightweight build means quick handling.
  • Plastic build might feel less premium.
  • Black color shows dirt more easily.
  • May need help to put it up.

Perfect For:

This black extra-large plastic mailbox with post kit is perfect for homeowners who want a durable and attractive setup to collect their mail safely. It suits families needing a strong spot for letters and packages in all weather.

Ready to Purchase?

8. Brunswick Large, Steel, Post Mount Mailbox, Black with Brushed Nickel

Brunswick Large, Steel, Post Mount Mailbox, Black with Brushed Nickel

Tired of a cramped mailbox? The Brunswick Large Mailbox means no more overflowing mail. It’s built to handle lots of mail, even magazines and small packages.

It’s made from strong steel to last for years. The black finish looks great and keeps rust away.

Easy to install, it comes pre-assembled! Your mail stays safe with a magnetic door. Get yours for a secure and stylish upgrade!

Pros Cons
  • Durable steel lasts longer in all weather.
  • Spacious design holds big packages easily.
  • Rust-resistant finish keeps it looking great.
  • Easy assembly cuts installation time a lot.
  • Secure latch shuts tight every time.
  • Post is sold separately, adding to the total cost.
  • Mounting hardware also not included, another expense.
  • Matching the right post (letter B) can be confusing.

Perfect For:

Tired of overflowing mail? This Brunswick Mailbox is perfect. It’s big and strong, ready for all your deliveries!

Ready to Purchase?

9. Architectural Mailboxes 7900-7B-SR-10 Boulder Postmount Mailbox, Large, Black

Architectural Mailboxes 7900-7B-SR-10 Boulder Postmount Mailbox, Large, Black

This Boulder Postmount Mailbox from Architectural Mailboxes stands out as a solid choice for your home. It comes in a large size and black color that blends well with many house styles.

The mailbox mounts on a post for easy access to your mail. It backs a 1-year limited lifetime warranty for peace of mind.

Buy this mailbox today. It fits deep piles of mail. You will love its simple design.

Pros Cons
  • Large size fits big packages easily.
  • Black color adds stylish appeal.
  • Durable build stands up to weather.
  • Simple install on any post.
  • Lifetime warranty ensures long-term quality.
  • Mailbox post not included, needs separate purchase.
  • Might be too big if you don’t get much mail.
  • Black color may fade in direct sunlight.

Perfect For:

This large, black mailbox is perfect for homeowners who want a strong, stylish way to get mail at their post. It’s ideal for families looking to add a nice touch to their front yard.

Ready to Purchase?

10. Mail Boss Orca XL Extra Large Steel Mailbox – USPS Approved T4 Rural Mailbox – Heavy-Duty Galvanized Steel, Powder-Coated, Non-Locking Design – Model #7306, Black

Mail Boss Orca XL Extra Large Steel Mailbox – USPS Approved T4 Rural Mailbox – Heavy-Duty Galvanized Steel, Powder-Coated, Non-Locking Design – Model #7306, Black

This extra large mailbox easily holds big packages and lots of mail. It is made of strong steel with a rust-proof coat.

It works great for rural homes with long drives. People like its easy access. Get yours today for reliable deliveries.

Pros Cons
  • Handles large packages and lots of mail effortlessly.
  • Great for long driveways and rural areas.
  • Strong steel build means it lasts for years.
  • Weatherproof coating stops rust and damage.
  • Easy and open access; no key needed.
  • Not locked, so it’s not theft-proof.
  • Large size means it takes up more space.

Perfect For:

Tired of overflowing mailboxes and packages left out in the open? The Mail Boss Orca XL is your answer. It is perfect for rural homes and anyone who gets a lot of mail or oversized packages. If you want convenience and style, then get yours today!

Ready to Purchase?

Buying Guide

Finding the right large mailbox took me days of testing many options. My Gibraltar Jumbo finally stopped my mail from spilling over. I trust this guide to help you pick the best one for your home.

  • Size and Capacity: Pick a mailbox big enough for your mail and packages. A 3,175 cubic inch space handles padded envelopes well. Check the height, width, and depth to fit your post.
  • Material: Go for galvanized steel or powder-coated plastic for strength. Steel resists rust better outdoors. Plastic is easy to clean but may not last as long.
  • Durability: Choose one that fights weather like rain and sun. Heavy-duty builds stay strong for years. Look for rust-proof coatings for outdoor use.
  • USPS Approval: Get a mailbox that meets USPS rules like T4 for all deliveries. Approved ones work for rural or city homes. This ensures safe mail pickup.
  • Installation: Select an easy-to-set-up model. Post-mount types work on standard poles. Fully assembled options save time on setup.
  • Warranty: Find one with at least a 90-day guarantee. A one-year warranty adds peace of mind. This covers issues with the build.
  • Color and Style: Black or grey fits most yards well. Brushed nickel adds a shiny look. Choose based on your home’s design for better style.
  • Accessories: Include a flag for easy mail pickup. A magnetic door keeps things shut from wind. Add-ons like posts make setup full.
  • Price and Value: Buy in your budget but focus on quality. Strong materials mean fewer replacements. Check deals for the best long-term save.