MetaSysPackaging
Custom Mailer Boxes

Mailer Boxes Built to Your Specs

Self-locking mailer boxes shipped flat and assembled in seconds. The unboxing star of the e-commerce world.

Sizes
4x4x4 to 24x18x18 inches
Min Order
50 units
Production
7 to 15 days
Free 3D Mockup Ships All 50 States 48hr Quote Response
Custom Mailer Boxes produced by MetaSys Packaging
KraftWhite SBSCorrugated E-Flute
Top Use Cases

Where Mailer Boxes Perform Best

  • Subscription box brands shipping monthly

  • Direct to consumer launches that need a memorable unboxing

  • Apparel and accessories brands shipping under 5 lbs

In the Wild

Mailer Boxes Examples

Mailer Boxes packaging example 1 by MetaSys Packaging
Mailer Boxes packaging example 2 by MetaSys Packaging
Mailer Boxes packaging example 3 by MetaSys Packaging
Mailer Boxes packaging example 4 by MetaSys Packaging
Materials

Material Options

Full guide
SBS Board (Solid Bleached Sulfate)
12pt

SBS Board

Cosmetics, luxury goods, food packaging

Bright WhiteFood SafePrint ReadyPremium Feel
Kraft Paperboard
14pt

Kraft Paperboard

Eco brands, artisan food, craft positioning

Recycled ContentBiodegradableFSC Certified
Corrugated E-Flute
3

Corrugated E-Flute

Mailer boxes, ecommerce shipping, fragile items

LightweightStrongRecyclablePrint Ready
Corrugated B-Flute
3.5

Corrugated B-Flute

Shipping cartons, heavy products, stackable applications

Heavy DutyStackableRecyclable
Print Methods

Printing Options Available

Finishing guide
50 to 500 units

Digital

No plates. Fast turnaround.

Best for runs under 500 units and prototypes. No setup fees, variable data possible.

500+ units

Offset

Sharp, consistent, cost-effective at scale.

Pantone color matching, lowest per-unit cost for runs of 500 or more. CMYK or spot.

Brand-critical

Pantone

Exact brand colors, every run.

Solid coated Pantone inks guarantee color consistency from press to press across every order.

FAQ

Mailer Boxes Questions

Answers to the 7 questions brands ask us most often about mailer boxes.

How much weight can a mailer box hold?+

E-flute mailers hold up to 5 lbs comfortably. B-flute mailers handle 10 to 15 lbs depending on dimensions. For anything heavier, choose a shipping carton.

Do mailer boxes need tape?+

No. The tuck-end and locking flaps hold the box closed. Some brands add a single branded sticker for the unboxing reveal, but tape is never required.

Can I print on the inside of a mailer box?+

Yes. Interior print is one of the most powerful unboxing moves. We offer inside printing at a 30 to 40 percent cost increase over outside-only printing.

What is the smallest mailer box you make?+

Our smallest standard mailer is 4 by 4 by 4 inches. Custom sizes start at 3 by 3 by 1 inch for jewelry and accessories.

Are mailer boxes recyclable?+

Yes. Every mailer box we produce is 100 percent recyclable curbside. Choose our FSC certified kraft or recycled content options for an even smaller footprint.

Can I get a sample before ordering 500 units?+

Yes. We produce a single physical sample of your final design for a flat fee that gets credited toward your first production order.

How long do mailer boxes take to produce?+

Digital print runs ship in 7 to 10 business days. Offset runs ship in 12 to 15 business days. Rush is available for an added fee.

Ready When You Are

Get a quote for Mailer Boxes

Send your specs. We respond with a detailed quote plus a free 3D mockup within 48 business hours.

  • Free 3D design mockup included
  • Response within 48 business hours
  • No commitment required
  • Ships to all 50 US states
Related Box Styles

Other Styles Worth Considering

Product Boxes

Product Boxes

Classic retail packaging. Tuck top or auto-bottom.

Sizes
Fully custom
Min Order
100 units
Rigid Setup Boxes

Rigid Setup Boxes

Premium unboxing experience. Lid and base construction.

Sizes
Fully custom
Min Order
50 units
Shipping Cartons

Shipping Cartons

Durable brown kraft cartons for safe shipping.

Sizes
6x4x4 to 24x18x18 inches
Min Order
25 units