Shipping Mailer Boxes
Great
366 reviews on
Trustpilot
Self-locking, tape-free Shipping Mailer Boxes for e-commerce fulfillment, wholesale from Crat Packaging.
$0.91
UNLIMITED CUSTOMIZATION OPTIONS
A printing technique employing a plate to transfer designs onto paper. Ideal for extensive print jobs.
Plate-free digital printing transfers designs electronically, cost-effective for short runs.
Screen printing is a method using a mesh screen and stencil to transfer ink onto a substrate.
Quick-drying printing technique utilizing ultraviolet lights for ink curing, yielding a glossy finish.
Consisting of water-based pigments, Ensures top-notch color output with a 100% eco-friendly profile.
Fluorescent inks are vibrant, UV-reactive pigments that emit vivid colors under ultraviolet light.
Generate pure colors using specific ink formulas to consistently & precisely reproduce color in printing.
Produce metallic colors through precise ink formulations to replicate color in printing.
Premium bleached white paperboard, specially coated on one side to enhance printing & finishing.
Bleached white paperboard, coated on both sides to achieve superior printing quality and finishes.
Top-notch textured paper, perfect for adding a touch of style when wrapping up durable boxes.
A unique paper material showcasing a shiny or matte metallic laminated surface.
Bleached kraft paper crafted from a blend of new and recycled pulp, coated on both sides for optimal printing.
Kraft paper produced from a combination of new and recycled paper pulp, with coating on both sides for printing purposes.
Kraft paper dyed black, manufactured from a blend of new and recycled pulp, and coated on both sides for printing applications.
Crafted from recycled grey chipboard cardboard, also known as uncoated recycled paperboard, ideal for luxury rigid boxes.
Unique paper material showcasing a holographic laminated surface in either glossy or matte finish.
Grey chipboard, one-sided white cardboard with a smooth, printable surface, ideal for luxury rigid boxes.
Gloss lamination enhances visual appeal by applying a shiny finish, and protecting printed materials.
Matte lamination offers a non-reflective finish, providing elegant appearance to printed materials.
Made with a smooth lamination that feels like touching a peach, can choose between a satin or matte.
A UV coating is applied to a specific area and then cured using ultraviolet light to make it sturdy.
A transparent coating is applied using the CMYK printing technique, and it comes in gloss, satin, or matte.
A fast-drying coating that undergoes curing through ultraviolet light is offered in both gloss and matte.
In a printing method, dies are pressed onto the back of the material to create a raised motif.
A printing technique that involves pressing dies onto the front of the material to create a raised motif.
In foil relief printing, foil is transferred at high temperatures, often employing multiple colors.
Craft a die-cut shape with a plastic film layer, revealing a window to showcase the product inside.
We recommend the ideal material and add-ons like lamination, foiling, embossing UV, etc.
Get Free Design Support with your box 3d Renders or Send Your Design File for Printing.
Upon design approval, we’ll print and conduct quality checks before shipping the boxes to you.
Technical Specifications
| Dimensions | Available in Custom Sizes |
| Printing | CMYK, Pantone Color, Full Color & No Printing |
| Paper Stock | Eco-Friendly Kraft, Corrugated Cardboard & Premium Rigid Stock |
| Coating | Semi-Gloss AQ, Gloss UV, Matte UV & Spot UV |
| Default Process | Die Cutting, Gluing, Scoring, Perforating |
| Custom Options | Window Cut Out, Gold/Silver Foiling, Embossing, Raised Ink |
| Proof | Digital Proof, 3D Mock-Up |
| Shipping | Shipped FLAT (Free Shipping Across USA & Canada) |
| Help | For further inquiries and Quotes, contact us or email at sales@cratpackaging.com |
Crat Packaging manufactures Shipping Mailer Boxes as a distinct self-locking mailer subtype — not a standard RSC carton, but a tuck-flap, tape-free structure purpose-built for e-commerce parcel shipping straight out of the box. The self-locking mailer format has become the default choice for online sellers who want a fast-assemble, tape-free box that still holds up through the parcel network.
Shipping Mailer Boxes Specifications
| Box Style | Self-locking tuck-flap mailer (no tape required) |
|---|---|
| Material | E-flute corrugated, kraft or white exterior |
| Assembly | Flat-shipped, folds and locks with interlocking flaps |
| Best For | E-commerce parcel shipping, subscription boxes, DTC brands |
| Print Options | Flexo 1-4 color, full-color litho, interior print |
| Order Volume (MOQ) | 150 units minimum |
| Shipping | Flat-packed cartons, US-wide parcel |
A Distinct Self-Locking Mailer Subtype
Unlike a standard RSC that needs tape on every seam, a mailer box uses interlocking tuck flaps that fold and click into place, cutting assembly time and eliminating packing tape from the fulfillment line entirely. This isn’t just a smaller shipping box — it’s a different structural category built specifically around fast, tape-free e-commerce fulfillment, often with the interior printed for an unboxing moment the outside doesn’t reveal. Our general Shipping Boxes use standard tape-sealed construction; this product is the purpose-built mailer alternative.
Common Use Cases
- E-commerce fulfillment: fast, tape-free assembly for high-volume parcel shipping.
- Subscription boxes: recurring shipments with a branded unboxing experience.
- DTC brand shipping: customer-facing packaging that reflects brand quality.
- Small parcel and apparel shipping: lightweight goods needing quick pack-out.
Locking Style and Interior Print Options
Standard tuck-and-lock flaps suit most parcel weights, with a reinforced double-lock available for heavier contents. Interior printing — a full-color pattern or message on the inside panels — is a popular option for brands wanting a surprise-and-delight moment when the box opens.
Eco-Friendly Packaging
A 2025 McKinsey & Company survey found over 60% of U.S. consumers pick green packaging when they have the choice. Crat Packaging offers recyclable and FSC-certified board options for Shipping Mailer Boxes at no premium over standard stock, and the tape-free design itself reduces plastic tape waste.
Who Buys This Wholesale
- E-commerce and online retail brands
- Subscription box companies
- DTC apparel and lifestyle brands
- Fulfillment centers optimizing pack-out speed
Why Order From Crat Packaging
- Wholesale pricing on bulk mailer-box runs
- Free design support for interior and exterior artwork
- Low MOQ starting at 150 units
- Fast US-wide delivery from domestic production
- Tape-free locking mechanism that speeds up fulfillment
- Interior print options for branded unboxing moments
How to Order
- Send us your box dimensions, material preference, and print needs.
- Receive a free digital proof for review.
- Request an optional physical sample before committing to a full run.
- Approve the proof and we move straight to production and shipping.
Frequently Asked Questions
Do these really need no tape?
Correct, the interlocking flap design holds securely without tape for most standard parcel weights.
How is this different from a regular shipping box?
Mailer boxes use a self-locking tuck-flap structure instead of standard tape-sealed RSC construction, making them faster to assemble.
Can I print the inside of the box?
Yes, interior printing is available for a branded unboxing experience.
What’s the minimum order quantity?
150 units for standard runs.
Are these strong enough for heavier items?
Yes, a reinforced double-lock option is available for heavier contents.
How long does production take?
Most orders ship within 10-15 business days after proof approval.
Shop with Confidence
