Mailers & Envelopes

Check your size. Plan your quantity.

Open a product’s measurement checker and bundle planner, then carry your SKU and quantity into a delivered quote.

SELECTION EXPERT ADVICE

Match Structure to the Contents
MORE INFO
Compare flexible envelopes, padded mailers and corrugated mailer boxes. Check the packed item and the protection it needs; no single format is suitable for every shipment.
Check Cushioning and Usable Space
MORE INFO
A padded lining takes up interior space and does not guarantee protection for every fragile item. Confirm the usable opening, packed thickness and closure, adding appropriate protection when the item needs it.
Confirm the Closure
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Check whether the selected mailer uses a peel-and-seal strip, tuck closure, tape or separate end caps. Allow room for the packed item and any cushioning so the closure works as intended.

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

Shop by type

All product lines

Choose a mailer by usable size, format and closure. Compare flexible mailers, padded envelopes, corrugated literature mailers and mailing tubes. Measure the item after adding any cushioning; width and length alone do not show whether a filled mailer will close. For a larger or mixed-format order, request a mailer quote.

Start with the right format

  • Flexible or padded: check the usable opening and room for the item's thickness. A padded lining does not establish that the package is suitable for every fragile item.
  • Corrugated mailer: compare all three inside dimensions and the closure. Check whether the exact SKU needs tape or has a self-seal strip.
  • Mailing tube: confirm usable length, diameter and whether end caps are included. Packing list envelopes hold documents on another package; they are a separate format.

A bulk mailer example

M1433: 14 x 3 x 3 inch white ECT-32 corrugated mailers is a long, narrow format with a 3 x 3 inch inside cross-section. Each bundle contains 50 mailers: 8 bundles supply 400. For a different shape, compare M754: 7 x 5 x 4 inch white literature mailers, 50 per pack. These are different sizes, not interchangeable options.

For a quote, send each SKU or required usable size, format, closure and quantity. Specify individual mailers or packs, the delivery ZIP and required date. Product pages show current prices and availability; delivery depends on the order and destination.

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 orders, send your list and ZIP and get a delivered price by email.

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 -> Get a delivered quote for larger orders -> Read the mailers guide -> View products below ->
IN STOCK Professional-grade 20x24x4 expansion poly mailers built for e-commerce brands shipping books, binders, and catalogs. Features self-seal closure with tear strip, puncture-resistant 2.5 mil polyethylene, and gusseted design for thicker items. Sold by the case of 100.
Envelopes & Mailers

20x24x4 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: EPM20244

20 x 24 x 4 in 2.5 Mil Polyethylene 100 PER CASE
$59.96 / CASE
IN STOCK 3.5x5 Clear 2 Mil Document Envelopes - Tamper Proof, Case of 1000 Packrift
Packing List Envelopes

3.5x5 Clear Packing List Envelopes, 2 Mil, 1000/Case

PN: PL471

3 1/2 x 5 in 2 Mil Poly 1000 PER CASE
$54.42 / CASE
IN STOCK 7 x 5 x 4 inch white corrugated mailer with folded tab closure, SKU M754.
Boxes - Mailers

7x5x4 White Corrugated Literature Mailers 50-Pack

PN: M754

7 x 5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$44.38 / BUNDLE
IN STOCK 8x8x3 inch kraft corrugated literature mailer with fold-and-tuck construction. ECT-32-B board; bundle of 50.
Boxes - Mailers

8x8x3 Kraft Fold-and-Tuck Corrugated Literature Mailers 50-Pack

PN: ML883K

8 x 8 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$56.21 / BUNDLE
IN STOCK Professional-grade 15x20x4" expansion poly mailers built for e-commerce brands shipping books, binders, and catalogs. Each case contains 100 white polyethylene mailers featuring self-seal closure with double perforation tear strip, 2.5 mil puncture-resistant material, and silver inner lining that accepts labels and ink perfectly.
Envelopes & Mailers

15x20x4 2.5 Mil Self-Seal Poly Mailers 100/Case

PN: EPM15204

15 x 20 x 4 in 2.5 Mil Polyethylene 100 PER CASE
$37.43 / CASE
IN STOCK 10x13" Clear View Poly Mailers, 2.5 Mil Self-Seal, Case of 100
Envelopes & Mailers

10x13 2.5 Mil Clear Self-Seal Poly Mailers 100/Case

PN: CV1013100PK

10 x 13 in 2.5 Mil Polyethylene 100 PER CASE
$25.97 / CASE
IN STOCK Professional-grade white corrugated literature mailers in 14.25" x 11.25" x 4" dimensions deliver your marketing materials with impact. Featuring ECT-32-B crush-resistant construction with self-sealing tabs that require no additional supplies, these one-piece folding mailers assemble in seconds for efficient order fulfillment. Perfect for e-commerce brands shipping catalogs, brochures, and promotional materials–sold as a convenient 50-piece bundle.
Boxes - Mailers

14.25x11.25x4 White Corrugated Literature Mailers 50-Pack

PN: M14114

14 1/4 x 11.25 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$104.82 / BUNDLE
IN STOCK Professional white corrugated literature mailer sized 11" x 11" x 4" with integrated self-sealing tabs that fit snugly for secure closure. Made from durable ECT-32-B corrugated material designed for quick assembly without additional supplies. Sold in convenient bundles of 25.
Boxes - Mailers

11x11x4 White Self-Seal Corrugated Literature Mailers 25-Pack

PN: ML11114

11 x 11 x 4 in ECT-32-B Corrugated 25 PER BUNDLE
$85.98 / BUNDLE
IN STOCK 10.25x8.25x2 White Corrugated Literature Mailers - 50 Pack
Boxes - Mailers

10.25x8.25x2 White Corrugated Literature Mailers 50-Pack

PN: ML1082

10 1/4 x 8.25 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$58.49 / BUNDLE
IN STOCK 11 1/8 x 8 5/8 x 1" White Corrugated Easy-Fold Mailers - 50 Pack
Boxes - Mailers

11 1/8 x 8 5/8 x 1 in White Corrugated Easy-Fold Mailers 50-Pack

PN: M1181

11 1/8 x 8 5/8 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$44.81 / BUNDLE
IN STOCK Ship with confidence using these 9.5x6.5x2 white corrugated easy-fold mailers designed for maximum crush resistance and professional presentation. Engineered from ECT-32-B corrugated material with multiple-depth scoring, they collapse flat for storage and fold to your exact needs in seconds. Sold in bundles of 50–the trusted choice for e-commerce brands shipping flat items, artwork, and merchandise.
Boxes - Mailers

9.5x6.5x2 White Corrugated Easy-Fold Mailers 50-Pack

PN: M9621BF

9 1/2 x 6.5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$53.17 / BUNDLE
IN STOCK Ship small items with confidence using these 24x2x2 ECT-32-B white corrugated mailers. One-piece fold-and-tuck design eliminates tape and glue while delivering double-wall crush resistance. Bundle of 50 saves money on per-unit costs and freight efficiency.
Boxes - Mailers

24x2x2 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M2422

24 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$61.52 / BUNDLE
IN STOCK ECT-32-B corrugated mailers sized 12" x 4" x 2" deliver crush-resistant protection with zero assembly overhead–fold, seal, ship in seconds. Double-wall construction on front and sides absorbs impact while reducing freight costs through lightweight design. 50-piece bundle ideal for warehouses processing mixed SKU volumes.
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 10x8x6 ECT-32-B White Corrugated Mailers, 50-Pack
Boxes - Mailers

10x8x6 ECT-32 White Corrugated Mailers 50-Pack

PN: M1086

10 x 8 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$101.78 / BUNDLE
IN STOCK Professional kraft corrugated literature mailers that assemble in seconds without tape, glue, or staples. Made from strong ECT-32-B material for crush-resistant protection. Perfect for e-commerce brands shipping documents, catalogs, and marketing materials with impact. 50 mailers per bundle.
Boxes - Mailers

12 1/8 x 9 1/4 x 2 in Kraft Literature Mailers Self-Seal 50/Bundle

PN: M1292K

12 1/8 x 9 1/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$53.17 / BUNDLE
IN STOCK Save 30% on storage and shipping costs with these ECT-32-B kraft corrugated mailers. The one-piece fold-and-tuck design eliminates assembly time while dual-wall construction protects fragile items. Ships flat in 50-count bundles for maximum warehouse efficiency.
Boxes - Mailers

7x5x2 ECT-32 Kraft Corrugated Mailers 50-Pack

PN: M752K

7 x 5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$51.65 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B kraft corrugated mailers. One-piece fold-to-close design requires no tape, glue, or staples–assemble in seconds and cut labor costs. Double-wall construction on front and sides provides superior crush resistance while staying lightweight to reduce postage.
Boxes - Mailers

5x5x5 ECT-32-B Kraft Corrugated Mailers 50/Bundle

PN: M555K

5 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$60.00 / BUNDLE
IN STOCK Professional-grade 13x10x2 white corrugated literature mailers designed for e-commerce brands shipping documents, catalogs, and promotional materials. ECT-32-B crush-resistant construction with front-locking tabs and protective side flaps ensures maximum protection without tape, glue, or staples. 50-box bundle delivers cost-effective shipping solutions.
Boxes - Mailers

13x10x2 White Corrugated Literature Mailers 50/Bundle

PN: MFL13102

13 x 10 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$113.17 / BUNDLE
IN STOCK Professional 14" x 10" x 4" kraft corrugated literature mailers designed for e-commerce brands shipping documents, catalogs, and flat products. Crush-resistant ECT-32-B material with protective side flaps and front tuck closure assembles in seconds without tape, glue, or staples. Sold as bundle of 50 boxes.
Boxes - Mailers

14x10x4 Kraft Corrugated Literature Mailers 50/Bundle

PN: MFL14104K

14 x 10 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$132.92 / BUNDLE
IN STOCK Professional-grade ECT-32-B corrugated carrying cases engineered for warehouse and fulfillment operations. Pre-assembled with integrated plastic handles, these 20" x 11 3/8" x 5 1/2" crush-resistant mailers ship as a bundle of 10 to maximize your freight efficiency and reduce per-unit costs.
Boxes - Mailers

20 x 11 3/8 x 5 1/2 in White Corrugated Carrying Cases with Handles 10/Bundle

PN: MCC5

20 x 11 3/8 x 5 1/2 in ECT-32-B Corrugated 10 PER BUNDLE
$61.37 / BUNDLE
IN STOCK 12x7.25 Kraft Self-Seal Bubble Mailers #1 - Lightweight Protection, Case/100
Envelopes & Mailers

12x7.25 #1 Kraft Self-Seal Bubble Mailers 100/Case B854SS

PN: B854SS

12 x 7.25 in Paper Exterior/Bubble Lining 100 PER CASE
$34.50 / CASE
IN STOCK 2x15 Kraft Crimped End Mailing Tubes 50/Case
Mailing Tubes

2x15 Kraft Crimped End Mailing Tubes 50/Case

PN: S2015K

15 in 50 PER CASE
$56.76 / CASE
IN STOCK 4.5x5.5 Orange "Packing List/Invoice Enclosed" Envelopes 1000/Case
Packing List Envelopes

4.5x5.5 Orange "Packing List/Invoice Enclosed" Envelopes 1000/Case

PN: PL417

4.5 x 5.5 in 1000 PER CASE
$33.55 / CASE

Request Custom Quote

Send the SKU, quantity, delivery ZIP, and any required specs so we can review the request.