Mailers & Envelopes

SELECTION EXPERT ADVICE

Rigid vs Flexible Mailers
MORE INFO
Corrugated mailer boxes provide structure and protection for items that cannot be bent or compressed in transit. Poly and padded mailers work well for soft goods, clothing, and flexible items where keeping the shipment lightweight is the primary cost driver.
Built-In Protection Levels
MORE INFO
Bubble-lined mailers add a cushioning layer for fragile or delicate items without requiring additional packing materials inside the package. For documents and flat goods that do not need padding, flat and paper mailers are the more cost-effective choice.
Closure Type and Packing Speed
MORE INFO
Peel-and-seal closures reduce packing time significantly on high-volume fulfillment lines. For operations processing hundreds of orders per shift, the closure method on your mailer has a real cumulative impact on throughput and labor cost over the course of a workday.

Need help choosing a mailer?

Pick the right mailer for your product weight and protection level

Use these buying guides to choose between poly and bubble mailers, and decide when to use a box instead.

Mailers Guide → Poly vs bubble vs rigid mailers Bubble Mailer Size Guide → Standard sizes 000 through 7 explained Mailer vs Box Selector → When a mailer is enough and when you need a box
Overview

1,487 mailers and envelopes: spiral wound mailing tubes with caps, white and kraft literature mailers, bubble and poly mailers and packing list pouches. Sizes run from 2 to 24 inches with pack counts of 10 to 1,000 shown on each listing. 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 Mailers & Envelopes 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

  • Usable inside size
  • Padding or material
  • Closure type
  • Case quantity
Common wrong-order risk: Forgetting item thickness. A mailer that fits flat dimensions can still be too tight once the product is packed.
Compare mailer vs box -> Contact support for larger orders -> Read the mailers guide -> View products below ->
IN STOCK One-piece white corrugated mailers manufactured from ECT-32-B material with crush-resistant double-wall protection on front and sides. Dimensions 36.25x4.875x4 inches fold together in seconds–no tape, glue, or staples required. Sold as a bundle of 50 units.
Boxes - Mailers

36.25x4.875x4 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M3644

36 1/4 x 4.875 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$110.89 / BUNDLE
IN STOCK Ship lightweight items with confidence using these 36x4x4 ECT-32-B white corrugated mailers. Double-wall crush-resistant construction folds in seconds with no tape, glue, or staples required. Bundle of 50 mailers reduces per-unit costs and shipping weight for maximum freight efficiency.
Boxes - Mailers

36x4x4 ECT-32 White Corrugated Mailers 50/Bundle

PN: MLR3644

36 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$150.39 / BUNDLE
IN STOCK Ship small, lightweight items with confidence using these 30x4x4 white corrugated mailers manufactured from ECT-32-B material. One-piece fold-and-tuck design provides double-wall crush resistance on front and sides–no tape, glue, or staples required. Sold as a bundle of 50 for maximum volume savings.
Boxes - Mailers

30x4x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M3044

30 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$140.52 / BUNDLE
IN STOCK Industrial-grade ECT-32-B corrugated mailers engineered for lightweight shipping without compromise. One-piece fold-and-tuck design provides double-wall protection on front and sides–no tape, glue, or staples required. 50-unit bundle optimizes freight efficiency and warehouse operations.
Boxes - Mailers

27.5x3.5x3.5 ECT-32 White Corrugated Mailers 50/Case

PN: M2733

27 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$69.12 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers engineered for maximum crush resistance and rapid deployment. One-piece fold-and-tuck design requires zero tape, glue, or staples–pack 50 units per bundle at optimal freight efficiency. Ideal for fulfillment operations shipping small to mid-sized items with double-wall protection on front and sides.
Boxes - Mailers

26x6x2 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M2662

26 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$107.10 / BUNDLE
IN STOCK Heavy-duty ECT-32 white corrugated mailers engineered for lightweight shipping efficiency. One-piece fold-and-tuck design delivers double-wall protection on front and sides without tape, glue, or staples. Perfect for fulfillment operations shipping small fragile items–50 per bundle.
Boxes - Mailers

24x4x4 ECT-32 White Corrugated Mailers 50/Bundle

PN: M2444

24 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$97.98 / BUNDLE
IN STOCK Ship small, lightweight items with confidence using these ECT-32-B white corrugated mailers. The one-piece fold-and-tuck design assembles in seconds without tape, glue, or staples, while double-wall construction provides crush-resistant protection. Bundle of 50 units optimizes your fulfillment efficiency and reduces per-unit shipping costs.
Boxes - Mailers

22x6x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M2262

22 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$99.50 / BUNDLE
IN STOCK Heavy-duty ECT-32-B white corrugated mailers in 21
Boxes - Mailers

21x6x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M2162

21 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$96.46 / BUNDLE
IN STOCK Ship lightweight items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck construction delivers double-wall crush resistance on front and sides–no tape, glue, or staples required. Bundle of 50 units reduces per-unit freight costs and accelerates fulfillment.
Boxes - Mailers

20x4x4 ECT-32-B White Corrugated Mailers 50-Pack

PN: M2044

20 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$96.46 / BUNDLE
IN STOCK Heavy-duty 18x12x4 white corrugated mailers engineered for reliable protection on every shipment. ECT-32-B construction delivers crush resistance without the weight penalty–reducing freight costs while safeguarding contents. One-piece fold-and-tuck design assembles in seconds with zero tape, glue, or staples required. Sold as a bundle of 50.
Boxes - Mailers

18x12x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M18124

18 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$212.67 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers deliver double-wall crush resistance in a lightweight, one-piece fold-and-tuck design. At 18
Boxes - Mailers

18x4x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1844

18 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$82.79 / BUNDLE
IN STOCK Premium ECT-32 white corrugated mailers deliver crush-resistant protection with zero assembly time. One-piece fold-and-tuck design collapses flat for storage and unfolds with double-wall coverage on front and sides. Ships 50 mailers per bundle–ideal for high-volume e-commerce, fulfillment centers, and warehouse operations.
Boxes - Mailers

17.5x3.5x3.5 ECT-32 White Corrugated Mailers 50/Bundle

PN: MLR84

17 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$46.03 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers deliver professional protection in a one-piece fold-and-tuck design–no tape, glue, or staples required. These 17x6x6 crush-resistant mailers feature double-wall protection on front and sides, reducing product damage and freight costs per unit. Sold in bundles of 50 for immediate stocking.
Boxes - Mailers

17x6x6 ECT-32 White Corrugated Mailers 50-Pack

PN: M1766

17 x 6 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / BUNDLE
IN STOCK One-piece 16x6x6 white corrugated mailers with double-wall crush resistance on front and sides–no tape, glue, or staples required. Manufactured from ECT-32-B material for superior stacking performance and lightweight postage savings. Sold as a bundle of 50 units.
Boxes - Mailers

16x6x6 ECT-32 White Corrugated Mailers 50-Pack

PN: M1666

16 x 6 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$102.54 / BUNDLE
IN STOCK Heavy-duty ECT-32-B white corrugated mailers in 16x6x4
Boxes - Mailers

16x6x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1664

16 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$101.02 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers deliver crush-resistant protection with zero assembly time–fold-and-tuck design requires no tape, glue, or staples. These 16x5x5 one-piece mailers provide double-wall protection on front and sides while reducing dimensional weight for freight savings. Ideal for fulfillment centers shipping small, lightweight items in bulk.
Boxes - Mailers

16x5x5 ECT-32 White Corrugated Mailers 50-Pack

PN: M1655

16 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$96.46 / BUNDLE
IN STOCK Ship with confidence using these 16x4x4 white corrugated mailers manufactured from ECT-32-B material. One-piece fold-and-tuck design eliminates tape, glue, and staples while delivering double-wall crush resistance. Sold as a bundle of 50–reduce labor time and maximize freight efficiency on lightweight shipments.
Boxes - Mailers

16x4x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1644

16 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$94.94 / BUNDLE
IN STOCK Engineered ECT-32-B white corrugated mailers in 15x7x5
Boxes - Mailers

15x7x5 ECT-32 White Corrugated Mailers 50-Pack

PN: M1575

15 x 7 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$105.58 / BUNDLE
IN STOCK Heavy-duty ECT-32-B white corrugated mailers in 15x2x2 dimensions deliver double-wall crush resistance without tape, glue, or staples. These one-piece folding mailers reduce labor and material costs while protecting small, lightweight items during shipping. Bundle of 50 units ready to deploy in your fulfillment operation.
Boxes - Mailers

15x2x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M1522

15 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$44.81 / BUNDLE
IN STOCK Ship lightweight fragile items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck design delivers double-wall crush protection without tape, glue, or staples. 50-box bundle reduces per-unit costs and speeds fulfillment operations.
Boxes - Mailers

14x6x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1464

14 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$85.07 / BUNDLE
IN STOCK Ship small, lightweight items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck design delivers double-wall protection on front and sides without tape, glue, or staples. Each bundle contains 50 ready-to-use 14x6x2 mailers.
Boxes - Mailers

14x6x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M1462

14 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$80.51 / BUNDLE
IN STOCK One-piece white corrugated mailers with double-wall crush resistance on front and sides–no tape, glue, or staples required. ECT-32-B rated for reliable protection of lightweight, fragile items. Fold flat to reduce freight costs and warehouse footprint.
Boxes - Mailers

14x4x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1444

14 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$74.44 / BUNDLE
IN STOCK Premium 14
Boxes - Mailers

14x4x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M1442

14 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$61.52 / BUNDLE
IN STOCK Save on postage with lightweight, crush-resistant 14x3x3 white corrugated mailers. ECT-32-B rated construction provides double-wall protection on front and sides. One-piece fold-and-tuck design requires no tape, glue, or staples–perfect for high-volume shipping operations. 50-pack bundle.
Boxes - Mailers

14x3x3 ECT-32 White Corrugated Mailers 50-Pack

PN: M1433

14 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$58.49 / BUNDLE
IN STOCK Lightweight one-piece white corrugated mailers built from ECT-32-B material for maximum crush resistance and freight efficiency. Pre-scored design folds in seconds with no tape, glue, or staples required. Perfect for small, lightweight items–50 mailers per bundle.
Boxes - Mailers

13.5x3.5x3.5 ECT-32 White Corrugated Mailers 50-Pack

PN: MLRBL

13 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$41.78 / BUNDLE
IN STOCK Ship with confidence using these ECT-32-B white corrugated mailers engineered for maximum crush resistance and minimal prep time. The one-piece fold-and-tuck design eliminates tape, glue, and staples while doubling protection on front and sides. At 12
Boxes - Mailers

12x9x6 ECT-32 White Corrugated Mailers 50/Bundle

PN: MLR1296

12 x 9 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$154.95 / BUNDLE
IN STOCK Heavy-duty ECT-32-B white corrugated mailers in 12x9x4 dimensions deliver crush-resistant protection with zero assembly time. One-piece fold-and-tuck design requires no tape, glue, or staples–saving your team labor costs while cutting postage expenses. Sold as a bundle of 50 per case.
Boxes - Mailers

12x9x4 ECT-32-B White Corrugated Mailers 50/Bundle

PN: MLR1294

12 x 9 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$130.64 / BUNDLE
IN STOCK Ship lightweight items efficiently with these ECT-32-B white corrugated mailers (12
Boxes - Mailers

12x9x3 ECT-32 White One-Piece Corrugated Mailers 50-Pack

PN: MLR1293

12 x 9 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$122.29 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers engineered for small item shipping with double-wall crush resistance. One-piece fold-and-tuck design eliminates tape, glue, and staples–assembly takes seconds. 50-pack bundle maximizes cost savings per unit.
Boxes - Mailers

12x9x2 ECT-32 White Corrugated Mailers 50/Bundle

PN: MLR1292

12 x 9 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$113.93 / BUNDLE
IN STOCK One-piece, one-fold design with double-wall crush resistance on front and sides–no tape, glue, or staples required. ECT-32-B corrugated construction rated for repeated stacking and handling. Bundle of 50 white mailers sized 12
Boxes - Mailers

12x6x6 ECT-32 White Corrugated Mailers 50-Pack

PN: M1266

12 x 6 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$84.31 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers deliver crush-resistant protection with zero assembly required–fold and ship in seconds. Engineered for small parcel logistics, these 12x6x4 one-piece mailers reduce material waste and freight costs while securing fragile items with double-wall front and side protection. Sold as a 50-bundle for volume efficiency.
Boxes - Mailers

12x6x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1264

12 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$58.11 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers in 12x6x3
Boxes - Mailers

12x6x3 ECT-32 White Corrugated Mailers 50-Pack

PN: M1263

12 x 6 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$75.20 / BUNDLE
IN STOCK Ship small, lightweight items with confidence using these ECT-32-B white corrugated mailers. Pre-scored fold-and-tuck design delivers double-wall protection on front and sides without tape, glue, or staples. Bundle of 50 units ready to stock your fulfillment operation.
Boxes - Mailers

12x6x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M1262

12 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$72.92 / BUNDLE
IN STOCK Professional-grade 12x5x5 white corrugated mailers built from ECT-32-B material for maximum crush resistance and freight efficiency. One-piece fold-and-tuck design eliminates tape, glue, and staples–ready to pack in seconds. Bundle of 50 mailers reduces per-unit cost and keeps your fulfillment operation lean.
Boxes - Mailers

12x5x5 ECT-32 White Corrugated Mailers 50-Pack

PN: M1255

12 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$80.51 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck design assembles in seconds with double-wall crush resistance on front and sides–no tape, glue, or staples required. Bundle of 50 mailers per case.
Boxes - Mailers

12x5x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1254

12 x 5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$74.44 / BUNDLE
IN STOCK Save 15-20% on shipping costs with lightweight ECT-32-B white corrugated mailers that require zero assembly. These crush-resistant 12x4x4 one-piece mailers fold in seconds and provide double-wall protection on front and sides–perfect for small parcels, samples, and lightweight fragile items.
Boxes - Mailers

12x4x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1244

12 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$45.71 / BUNDLE
IN STOCK Professional-grade 12x4x3 white corrugated mailers engineered with ECT-32-B material for superior crush resistance and stacking performance. One-piece fold-and-tuck design eliminates tape, glue, and labor–ready to ship in seconds. Sold as 50-count bundles for maximum volume savings.
Boxes - Mailers

12x4x3 ECT-32 White Corrugated Mailers 50-Pack

PN: M1243

12 x 4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$61.52 / BUNDLE
IN STOCK ECT-32-B corrugated mailers sized 12
Boxes - Mailers

12x4x2 ECT-32-B White Corrugated Mailers 50/Case

PN: M1242

12 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$34.61 / BUNDLE
IN STOCK Ship lightweight items with confidence using these ECT-32-B white corrugated mailers in 12x3.5x3 dimensions. One-piece fold-and-tuck construction eliminates assembly time while crush-resistant double walls protect fragile contents. Bundle of 50 delivers maximum freight efficiency and volume savings for warehouse operations.
Boxes - Mailers

12x3.5x3 ECT-32 White Corrugated Mailers 50-Pack

PN: MLR7

12 x 3.5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$36.02 / BUNDLE
IN STOCK Engineered ECT-32-B white corrugated mailers with crush-resistant double-wall protection. These 12x2x2 one-piece fold-and-tuck mailers require no tape, glue, or staples–reducing prep time and material costs. Bundle of 50 ships ready to maximize your fulfillment efficiency.
Boxes - Mailers

12x2x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M1222

12 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$34.94 / BUNDLE
IN STOCK Crush-resistant one-piece white corrugated mailers built from ECT-32-B material for maximum durability without added weight. Ships in bundles of 50 with zero assembly required–fold, tuck, and seal in seconds. Perfect for lightweight fragile items, electronics, and small package shipments.
Boxes - Mailers

11.5x3.5x3.5 ECT-32 White Corrugated Mailers 50/Bundle

PN: MLRB

11 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$35.70 / BUNDLE
IN STOCK Save on postage and labor with these ECT-32-B white corrugated mailers in 11x8x4
Boxes - Mailers

11x8x4 ECT-32-B White Corrugated Mailers 50/Bundle

PN: MLR1184

11 x 8 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$97.98 / BUNDLE
IN STOCK Engineered ECT-32-B white corrugated mailers designed for warehouse and fulfillment operations shipping small, lightweight items. One-piece fold-and-tuck construction requires no tape, glue, or staples–double walls crush resistant and ready to use in seconds. Bundle of 50 mailers optimizes freight efficiency and reduces per-unit packaging costs.
Boxes - Mailers

11x8x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M1182R

11 x 8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$94.19 / BUNDLE
IN STOCK Heavy-duty ECT-32-B white corrugated mailers in 11x5x5 dimensions engineered for reliable protection of small, lightweight shipments. One-piece fold-and-tuck design assembles in seconds with no tape, glue, or staples required. Bundle of 50 crush-resistant boxes reduces labor time and freight costs per unit.
Boxes - Mailers

11x5x5 ECT-32 White Corrugated Mailers 50-Pack

PN: M1155

11 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$78.23 / BUNDLE
IN STOCK Ship small items faster and cheaper with these ECT-32-B white corrugated mailers in 11x4x4
Boxes - Mailers

11x4x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1144

11 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$63.80 / BUNDLE
IN STOCK 10x10x2 White Corrugated Mailers ECT-32-B , 50-Pack
Boxes - Mailers

10x10x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M10102R

10 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$121.53 / BUNDLE
IN STOCK 10x8x8 ECT-32-B White Corrugated Mailers, 50 Pack
Boxes - Mailers

10x8x8 ECT-32 White Corrugated Mailers 50-Pack

PN: M1088

10 x 8 x 8 in ECT-32-B Corrugated 50 PER BUNDLE
$123.81 / BUNDLE
IN STOCK 10x8x5 ECT-32-B White Corrugated Mailers, Bundle of 50
Boxes - Mailers

10x8x5 ECT-32 White Corrugated Mailers 50-Pack

PN: M1085

10 x 8 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$99.50 / BUNDLE

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