Mailer Boxes

SELECTION EXPERT ADVICE

Self-Locking vs Tape-Seal Mailer Formats
MORE INFO
Self-locking mailer boxes close without tape using interlocking tabs, which speeds up packing on high-volume lines and creates a cleaner, more professional appearance. Tape-sealed formats allow more flexibility in fill height and can handle slightly oversized contents that exceed the box depth without a visible gap at the closure.
Size Selection for Common Product Categories
MORE INFO
Literature mailers suit flat, rigid items like books, catalogs, and framed prints. Garment mailers handle folded clothing and accessories efficiently. Multimedia mailers are sized for CDs, DVDs, and gaming cartridges. Choosing the right format for your specific product eliminates wasted space and reduces the cushioning material needed to fill the gap.
Mailer Boxes for Branded DTC Packaging
MORE INFO
Branded mailer boxes with consistent dimensions create a repeatable unboxing experience that can be photographed, shared, and recognized as part of your brand identity. Standardizing on one or two mailer sizes across your product line simplifies procurement, reduces pack station training time, and lowers your per-unit packaging cost.

Need help choosing a mailer box?

Decide between a mailer box and a poly or bubble mailer

Use these buying guides to choose the right format for your product weight, protection level, and unboxing experience.

Mailers Guide → Poly vs bubble vs rigid mailers Mailer vs Box Selector → When a mailer is enough and when you need a box
Overview

644 corrugated mailer boxes from 4 to 30 inches: white and kraft literature mailers, self-seal tab-lock and ECT-32 styles in packs of 10, 25 and 50. Inside dimensions and board grade are listed on each box. Orders ship from five US regional warehouses; for mixed or recurring orders use the bulk quote path with SKU, quantity and destination ZIP.

Related collections

Buying path

Buy Mailer Boxes by the specs that change the order

Use filters, product titles, and product pages to compare size, material, pack count, case quantity, and fit before ordering.

Compare

Use filters and product titles to narrow by the specs that affect fit.

Confirm

Open the product page before ordering a case so you can check quantity, unit, and limits.

Reorder

Save the SKU or product link for repeat purchasing and support questions.

Larger orders

For pallet, recurring, or mixed-SKU needs, send support the details before placing a large order.

What to check first

  • Inside dimensions
  • Board grade or strength rating
  • Box style and closure
  • Case or bundle quantity
Common wrong-order risk: Choosing the outside size instead of the inside size. Confirm product fit, void fill, and storage space before ordering.
Use the box size calculator -> Contact support for larger orders -> Compare corrugated box types -> View products below ->
IN STOCK 8x5x5 ECT-32-B White Corrugated Mailers 50-Pack M855 - alias listing
Boxes - Mailers

8x5x5 ECT-32-B White Corrugated Mailers 50-Pack M855

PN: M855

8 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$75.20 / BUNDLE
IN STOCK 8x5x4 ECT-32 White Corrugated Mailers 50-Pack M854 - alias listing
Boxes - Mailers

8x5x4 ECT-32 White Corrugated Mailers 50-Pack M854

PN: M854

8 x 5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$71.40 / BUNDLE
IN STOCK 8x5x3 ECT-32 White Corrugated Mailers 50/Bundle M853 - alias listing
Boxes - Mailers

8x5x3 ECT-32 White Corrugated Mailers 50/Bundle M853

PN: M853

8 x 5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$44.99 / BUNDLE
IN STOCK 8x5x2 ECT-32 White Corrugated Mailers 50-Pack M852 - alias listing
Boxes - Mailers

8x5x2 ECT-32 White Corrugated Mailers 50-Pack M852

PN: M852

8 x 5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$60.00 / BUNDLE
IN STOCK 8x5x1 ECT-32-B White Corrugated Mailers 50-Pack M851 - alias listing
Boxes - Mailers

8x5x1 ECT-32-B White Corrugated Mailers 50-Pack M851

PN: M851

8 x 5 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$50.13 / BUNDLE
IN STOCK 8x4x2 ECT-32 White Corrugated Mailers 50-Pack M842 - alias listing
Boxes - Mailers

8x4x2 ECT-32 White Corrugated Mailers 50-Pack M842

PN: M842

8 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$26.64 / BUNDLE
IN STOCK 8x3x3 ECT-32 White Corrugated Mailers 50-Pack M833 - alias listing
Boxes - Mailers

8x3x3 ECT-32 White Corrugated Mailers 50-Pack M833

PN: M833

8 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$27.02 / BUNDLE
IN STOCK 8x3x2 ECT-32-B White Corrugated Mailers 50-Pack M832 - alias listing
Boxes - Mailers

8x3x2 ECT-32-B White Corrugated Mailers 50-Pack M832

PN: M832

8 x 3 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$24.05 / BUNDLE
IN STOCK 8x2x2 ECT-32-B White Corrugated Mailers 50-Pack M822 - alias listing
Boxes - Mailers

8x2x2 ECT-32-B White Corrugated Mailers 50-Pack M822

PN: M822

8 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$30.38 / BUNDLE
IN STOCK 7.5x3.5x3.25 ECT-32 White Corrugated Mailers 50-Pack MIBM5C - alias listing
Boxes - Mailers

7.5x3.5x3.25 ECT-32 White Corrugated Mailers 50-Pack MIBM5C

PN: MIBM5C

7 1/2 x 3.5 x 3 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$29.62 / BUNDLE
IN STOCK 7.5x3.25x1.75 ECT-32 White Corrugated Mailers 50-Pack MIBM250 - alias listing
Boxes - Mailers

7.5x3.25x1.75 ECT-32 White Corrugated Mailers 50-Pack MIBM250

PN: MIBM250

7 1/2 x 3.25 x 1 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$25.07 / BUNDLE
IN STOCK 7 1/8 x 5 x 3 in ECT-32-B White Corrugated Mailers 50-Pack MLR3 - alias listing
Boxes - Mailers

7 1/8 x 5 x 3 in ECT-32-B White Corrugated Mailers 50-Pack MLR3

PN: MLR3

7 1/8 x 5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$33.60 / BUNDLE
IN STOCK 7x7x7 ECT-32 White Corrugated Mailers 50/Bundle M777 - alias listing
Boxes - Mailers

7x7x7 ECT-32 White Corrugated Mailers 50/Bundle M777

PN: M777

7 x 7 x 7 in ECT-32-B Corrugated 50 PER BUNDLE
$114.69 / BUNDLE
IN STOCK 7x7x5 ECT-32-B White Corrugated Mailers 50/Bundle M775 - alias listing
Boxes - Mailers

7x7x5 ECT-32-B White Corrugated Mailers 50/Bundle M775

PN: M775

7 x 7 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$104.82 / BUNDLE
IN STOCK 7x7x4 ECT-32-B White Corrugated Mailers 50-Pack M774 - alias listing
Boxes - Mailers

7x7x4 ECT-32-B White Corrugated Mailers 50-Pack M774

PN: M774

7 x 7 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$96.46 / BUNDLE
IN STOCK 7x7x3 ECT-32-B White Corrugated Mailers 50-Pack M773 - alias listing
Boxes - Mailers

7x7x3 ECT-32-B White Corrugated Mailers 50-Pack M773

PN: M773

7 x 7 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$85.07 / BUNDLE
IN STOCK 7x6x3 ECT-32-B White Corrugated Mailers 50-Pack M763 - alias listing
Boxes - Mailers

7x6x3 ECT-32-B White Corrugated Mailers 50-Pack M763

PN: M763

7 x 6 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$69.88 / BUNDLE
IN STOCK 7x6x2 ECT-32 White Corrugated Mailers 50-Pack M762 - alias listing
Boxes - Mailers

7x6x2 ECT-32 White Corrugated Mailers 50-Pack M762

PN: M762

7 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$64.56 / BUNDLE
IN STOCK 7x5x2 ECT-32-B White Corrugated Mailers 50/Bundle M752 - alias listing
Boxes - Mailers

7x5x2 ECT-32-B White Corrugated Mailers 50/Bundle M752

PN: M752

7 x 5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$32.65 / BUNDLE
IN STOCK 7x5x5 ECT-32-B White Corrugated Mailers 50-Pack M755 - alias listing
Boxes - Mailers

7x5x5 ECT-32-B White Corrugated Mailers 50-Pack M755

PN: M755

7 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$72.16 / BUNDLE
IN STOCK 7x5x1 ECT-32-B White Corrugated Mailers 50/Bundle M751 - alias listing
Boxes - Mailers

7x5x1 ECT-32-B White Corrugated Mailers 50/Bundle M751

PN: M751

7 x 5 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$48.61 / BUNDLE
IN STOCK 7x4x3 ECT-32-B White Corrugated Mailers 50-Pack M743 - alias listing
Boxes - Mailers

7x4x3 ECT-32-B White Corrugated Mailers 50-Pack M743

PN: M743

7 x 4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$29.30 / BUNDLE
IN STOCK 7x4x2 ECT-32-B White Corrugated Mailers 50-Pack M742 - alias listing
Boxes - Mailers

7x4x2 ECT-32-B White Corrugated Mailers 50-Pack M742

PN: M742

7 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$24.12 / BUNDLE
IN STOCK 7x3x3 ECT-32-B White Corrugated Mailers 50/Bundle M733 - alias listing
Boxes - Mailers

7x3x3 ECT-32-B White Corrugated Mailers 50/Bundle M733

PN: M733

7 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$20.84 / BUNDLE
IN STOCK 7x3x2 ECT-32 White Corrugated Mailers 50-Pack M732 - alias listing
Boxes - Mailers

7x3x2 ECT-32 White Corrugated Mailers 50-Pack M732

PN: M732

7 x 3 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$22.46 / BUNDLE
IN STOCK 7x3x1 ECT-32-B White Corrugated Mailers 50-Pack M731 - alias listing
Boxes - Mailers

7x3x1 ECT-32-B White Corrugated Mailers 50-Pack M731

PN: M731

7 x 3 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$28.86 / BUNDLE
IN STOCK 7x2x2 ECT-32-B White Corrugated Mailers 50-Pack M722 - alias listing
Boxes - Mailers

7x2x2 ECT-32-B White Corrugated Mailers 50-Pack M722

PN: M722

7 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$20.51 / BUNDLE
IN STOCK 6.5x4.875x2.625 ECT-32 White Corrugated Mailers 50/Bundle MRX6X - alias listing
Boxes - Mailers

6.5x4.875x2.625 ECT-32 White Corrugated Mailers 50/Bundle MRX6X

PN: MRX6X

6 1/2 x 4.875 x 2 5/8 in ECT-32-B Corrugated 50 PER BUNDLE
$34.94 / BUNDLE
IN STOCK 6.5x4.875x3.75 ECT-32 White Corrugated Mailers 50-Pack MLR4 - alias listing
Boxes - Mailers

6.5x4.875x3.75 ECT-32 White Corrugated Mailers 50-Pack MLR4

PN: MLR4

6 1/2 x 4.875 x 3 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$38.74 / BUNDLE
IN STOCK 6.5x3.625x2.5 ECT-32 White Corrugated Mailers 50-Pack MRX4X - alias listing
Boxes - Mailers

6.5x3.625x2.5 ECT-32 White Corrugated Mailers 50-Pack MRX4X

PN: MRX4X

6 1/2 x 3.625 x 2 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$22.79 / BUNDLE
IN STOCK 6.5x2.5x1.75 ECT-32 White Corrugated Mailers 50-Pack MRX2X - alias listing
Boxes - Mailers

6.5x2.5x1.75 ECT-32 White Corrugated Mailers 50-Pack MRX2X

PN: MRX2X

6 1/2 x 2.5 x 1 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$15.65 / BUNDLE
IN STOCK 6.5x2.5x1 ECT-32 White Corrugated Mailers 50/Bundle MRX1X - alias listing
Boxes - Mailers

6.5x2.5x1 ECT-32 White Corrugated Mailers 50/Bundle MRX1X

PN: MRX1X

6 1/2 x 2.5 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$13.67 / BUNDLE
IN STOCK 6x6x6 ECT-32-B White Corrugated Mailers 50/Bundle M666 - alias listing
Boxes - Mailers

6x6x6 ECT-32-B White Corrugated Mailers 50/Bundle M666

PN: M666

6 x 6 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$72.92 / BUNDLE
IN STOCK 6x6x3 ECT-32-B White Corrugated Mailers 50-Pack M663 - alias listing
Boxes - Mailers

6x6x3 ECT-32-B White Corrugated Mailers 50-Pack M663

PN: M663

6 x 6 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$80.23 / BUNDLE
IN STOCK 6x6x1 ECT-32-B White Corrugated Mailers 50/Bundle M661 - alias listing
Boxes - Mailers

6x6x1 ECT-32-B White Corrugated Mailers 50/Bundle M661

PN: M661

6 x 6 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$41.78 / BUNDLE
IN STOCK 6x5x3 ECT-32 White Corrugated Mailers 50-Pack M653 - alias listing
Boxes - Mailers

6x5x3 ECT-32 White Corrugated Mailers 50-Pack M653

PN: M653

6 x 5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$61.52 / BUNDLE
IN STOCK 6x5x4 ECT-32-B White Corrugated Mailers 50/Bundle M654 - alias listing
Boxes - Mailers

6x5x4 ECT-32-B White Corrugated Mailers 50/Bundle M654

PN: M654

6 x 5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$64.56 / BUNDLE
IN STOCK 6x5x2 ECT-32-B White Corrugated Mailers 50-Pack M652 - alias listing
Boxes - Mailers

6x5x2 ECT-32-B White Corrugated Mailers 50-Pack M652

PN: M652

6 x 5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$50.13 / BUNDLE
IN STOCK 6x4x4 ECT-32-B White Corrugated Mailers 50/Bundle M644 - alias listing
Boxes - Mailers

6x4x4 ECT-32-B White Corrugated Mailers 50/Bundle M644

PN: M644

6 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$30.83 / BUNDLE
IN STOCK 6x5x1 ECT-32-B White Corrugated Mailers 50/Bundle M651 - alias listing
Boxes - Mailers

6x5x1 ECT-32-B White Corrugated Mailers 50/Bundle M651

PN: M651

6 x 5 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$46.20 / BUNDLE
IN STOCK 6x4x1 ECT-32-B White Corrugated Mailers 50-Pack M641 - alias listing
Boxes - Mailers

6x4x1 ECT-32-B White Corrugated Mailers 50-Pack M641

PN: M641

6 x 4 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$34.94 / BUNDLE
IN STOCK 6x2.5x1.75 ECT-32 White Corrugated Mailers 50/Bundle MRX2L - alias listing
Boxes - Mailers

6x2.5x1.75 ECT-32 White Corrugated Mailers 50/Bundle MRX2L

PN: MRX2L

6 x 2.5 x 1 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$24.59 / BUNDLE
IN STOCK 6x2.5x2.38 ECT-32 White Corrugated Mailers 50/Bundle MRX3L - alias listing
Boxes - Mailers

6x2.5x2.38 ECT-32 White Corrugated Mailers 50/Bundle MRX3L

PN: MRX3L

6 x 2.5 x 2 3/8 in ECT-32-B Corrugated 50 PER BUNDLE
$19.75 / BUNDLE
IN STOCK 6x2.5x1 ECT-32 White One-Piece Corrugated Mailers 50/Bundle MRX1L - alias listing
Boxes - Mailers

6x2.5x1 ECT-32 White One-Piece Corrugated Mailers 50/Bundle MRX1L

PN: MRX1L

6 x 2.5 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$20.12 / BUNDLE
IN STOCK 6x2x2 ECT-32-B White Corrugated Mailers 50-Pack M622 - alias listing
Boxes - Mailers

6x2x2 ECT-32-B White Corrugated Mailers 50-Pack M622

PN: M622

6 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$16.54 / BUNDLE
IN STOCK 5.5x3.5x3.5 ECT-32 White Corrugated Mailers 50/Bundle MSOL - alias listing
Boxes - Mailers

5.5x3.5x3.5 ECT-32 White Corrugated Mailers 50/Bundle MSOL

PN: MSOL

5 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$32.66 / BUNDLE
IN STOCK 5x5x5 ECT-32-B White Corrugated Mailers 50/Bundle M555 - alias listing
Boxes - Mailers

5x5x5 ECT-32-B White Corrugated Mailers 50/Bundle M555

PN: M555

5 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$43.29 / BUNDLE
IN STOCK 5x5x3 ECT-32 White Corrugated Mailers 50-Pack M553 - alias listing
Boxes - Mailers

5x5x3 ECT-32 White Corrugated Mailers 50-Pack M553

PN: M553

5 x 5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$30.25 / BUNDLE

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