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 Elevate your brand presentation with these premium 10.75x13
Envelopes & Mailers

10.75x13 2.8 Mil Blue Metallic Self-Seal Mailers 250/Case

PN: GFM1013B

10 3/4 x 13 in 2.8 Mil Aluminized Polyester Laminate 250 PER CASE
$180.44 / CASE
IN STOCK Elevate your brand with these 9.5x12.75 silver metallic mailing bags–durable 2.8 mil aluminized polyester laminate with peel & seal closure. Water-resistant and puncture-resistant for reliable protection. Case of 250 units delivers professional presentation that increases response rates.
Envelopes & Mailers

9.5x12.75 2.8 Mil Silver Peel & Seal Metallic Mailers 250/Case

PN: GFM0912S

9 1/2 x 12 3/4 in 2.8 Mil Aluminized Polyester Laminate 250 PER CASE
$148.60 / CASE
IN STOCK Elevate your brand with these premium 9.5x12.75 gold metallic glamour mailers featuring 2.8 mil aluminized polyester construction and peel-and-seal closure. Water-resistant and puncture-resistant design ensures professional presentation every time. Sold as case of 250 units.
Envelopes & Mailers

9.5x12.75 2.8 Mil Gold Self-Seal Metallic Mailers 250/Case

PN: GFM0912GD

9 1/2 x 12 3/4 in 2.8 Mil Aluminized Polyester Laminate 250 PER CASE
$148.60 / CASE
IN STOCK Heavy-duty 18x51
Envelopes & Mailers

18x51 4 Mil Self-Seal Poly Mailers 25/Case

PN: LPM1851

18 x 51 in Polyethylene 25 PER CASE
$52.05 / CASE
IN STOCK Professional 18x48
Envelopes & Mailers

18x48 4 Mil White Self-Seal Poly Mailers 25/Case

PN: LPM1848

18 x 48 in Polyethylene 25 PER CASE
$45.30 / CASE
IN STOCK Professional-grade 13x45
Envelopes & Mailers

13x45 2.5 Mil Self-Seal Poly Mailers 50/Case

PN: LPM1345

13 x 45 in 2.5 Mil Polyethylene 50 PER CASE
$65.74 / CASE
IN STOCK Protect your shipments with our 9.5x45
Envelopes & Mailers

9.5x45 2.5 Mil White Self-Seal Poly Mailers 50/Case

PN: LPM945

9 1/2 x 45 in 2.5 Mil Polyethylene 50 PER CASE
$48.07 / CASE
IN STOCK Durable 8.5
Envelopes & Mailers

8.5x39 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: LPM839

8 1/2 x 39 in 2.5 Mil Polyethylene 100 PER CASE
$77.34 / CASE
IN STOCK Premium 8.5 x 33
Envelopes & Mailers

8.5x33 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: LPM833

8 1/2 x 33 in 2.5 Mil Polyethylene 100 PER CASE
$71.28 / CASE
IN STOCK Durable 6x39
Envelopes & Mailers

6x39 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: LPM639

6 x 39 in 2.5 Mil Polyethylene 100 PER CASE
$69.07 / CASE
IN STOCK Professional 27 x 22
Envelopes & Mailers

27x22 Kraft Chipboard Tab Lock Stayflats Mailers 50/Case

PN: RM27

27 x 22 in .036 Chipboard 50 PER CASE
$124.37 / CASE
IN STOCK Professional 27x20
Envelopes & Mailers

27x20 Kraft Chipboard Tab Lock Stayflats Mailers 50/Case

PN: RM12

27 x 20 in .036 Chipboard 50 PER CASE
$105.47 / CASE
IN STOCK Professional 18 x 24
Envelopes & Mailers

18x24 Kraft Chipboard Tab Lock Stayflats Mailers 50/Case

PN: RM11

18 x 24 in .036 Chipboard 50 PER CASE
$80.99 / CASE
IN STOCK Professional 17x21
Envelopes & Mailers

17x21 Kraft Chipboard Tab Lock Stayflats Mailers 50/Case

PN: RM7

17 x 21 in .036 Chipboard 50 PER CASE
$58.70 / CASE
IN STOCK Protect high-value shipments with 18 x 13
Envelopes & Mailers

18x13 Kraft Chipboard Tab Lock Stayflats Mailers 100/Case

PN: RM6

18 x 13 in .036 Chipboard 100 PER CASE
$73.71 / CASE
IN STOCK Rigid .036 kraft chipboard stayflats mailers with integrated tab lock closure–no additional stiffeners needed. Perfect for e-commerce brands shipping photos, documents, and flat goods. Lightweight design reduces postage costs while maintaining professional presentation. Sold by the case of 100.
Envelopes & Mailers

15x12.75 Kraft Chipboard Tab Lock Stayflats Mailers 100/Case

PN: RM4

15 x 12.75 in .036 Chipboard 100 PER CASE
$67.51 / CASE
IN STOCK Professional-grade 11x16
Envelopes & Mailers

11x16 Kraft Tab Lock Rigid Stayflats Mailers 100/Case

PN: RM8

11 x 16 in .036 Chipboard 100 PER CASE
$71.07 / CASE
IN STOCK Professional-grade 11x13.5
Envelopes & Mailers

11x13.5 Kraft Tab Lock Stayflats Mailers 100/Case

PN: RM3

11 x 13 1/2 in .036 Chipboard 100 PER CASE
$58.73 / CASE
IN STOCK Protect documents, photos, and merchandise with professional-grade 9 3/4 x 12 1/4
Envelopes & Mailers

9 3/4 x 12 1/4 in Kraft Stayflats Tab Lock Mailers 100/Case

PN: RM5

9 3/4 x 12 1/4 in .036 Chipboard 100 PER CASE
$48.23 / CASE
IN STOCK Protect high-value shipments with our 9x11.5
Envelopes & Mailers

9x11.5 Kraft Chipboard Tab Lock Stayflats Mailers 100/Case

PN: RM2

9 x 11 1/2 in .036 Chipboard 100 PER CASE
$46.37 / CASE
IN STOCK Protect your shipments with these professional-grade 8x6
Envelopes & Mailers

8x6 Kraft Chipboard Tab Lock Stayflats Mailers 100/Case

PN: RM1

8 x 6 in .036 Chipboard 100 PER CASE
$29.12 / CASE
IN STOCK Professional-grade 27 x 20
Envelopes & Mailers

27x20 Kraft Self-Seal Stayflats Plus Mailers 50/Case

PN: RM12PSK

27 x 20 in .028 Chipboard 50 PER CASE
$129.58 / CASE
IN STOCK Professional-grade 18x24
Envelopes & Mailers

18x24 Kraft Self-Seal Stayflats Plus Mailers 50/Case

PN: RM11PSK

18 x 24 in .028 Chipboard 50 PER CASE
$97.83 / CASE
IN STOCK Professional-grade 21x17
Envelopes & Mailers

21x17 Kraft Self-Seal Stayflats Plus Mailers 100/Case

PN: RM7K

21 x 17 in .028 Chipboard 100 PER CASE
$138.54 / CASE
IN STOCK Professional-grade 13 x 18
Envelopes & Mailers

13x18 Kraft Self-Seal Stayflats Plus Mailers 100/Case

PN: RM6K

13 x 18 in .028 Chipboard 100 PER CASE
$92.08 / CASE
IN STOCK Protect your products with these 12 3/4 x 15
Envelopes & Mailers

12 3/4 x 15 in Kraft Self-Seal Stayflats Plus Mailers 100-Pack

PN: RM4K

12 3/4 x 15 in .028 Chipboard 100 PER CASE
$77.96 / CASE
IN STOCK Heavy-duty 11x13.5
Envelopes & Mailers

11x13.5 Kraft Self-Seal Stayflats Plus Mailers 100/Case

PN: RM3K

11 x 13 1/2 in .028 Chipboard 100 PER CASE
$65.52 / CASE
IN STOCK Professional-grade kraft self-seal stayflats plus mailers protect documents and photos with .028 chipboard construction and reliable peel-and-seal closure. 9.75
Envelopes & Mailers

9.75x12.25 Kraft Self-Seal Stayflats Plus Mailers 100/Case

PN: RM5K

9 3/4 x 12 1/4 in .028 Chipboard 100 PER CASE
$54.60 / CASE
IN STOCK Professional-grade 9 x 11.5
Envelopes & Mailers

9x11.5 Kraft Self-Seal Stayflats Plus Mailers 100/Case

PN: RM2K

9 x 11 1/2 in .028 Chipboard 100 PER CASE
$52.78 / CASE
IN STOCK Professional-grade 7x9
Envelopes & Mailers

7x9 Kraft Self-Seal Stayflats Plus Mailers 100/Case

PN: RM10K

7 x 9 in .028 Chipboard 100 PER CASE
$48.55 / CASE
IN STOCK Protect your e-commerce shipments with professional-grade 6x8
Envelopes & Mailers

6x8 Kraft Self-Seal Stayflats Plus Mailers 100/Case

PN: RM1K

6 x 8 in .028 Chipboard 100 PER CASE
$35.49 / CASE
IN STOCK Professional-grade 6x6
Envelopes & Mailers

6x6 Kraft Self-Seal Stayflats Plus Mailers 200/Case

PN: RM9K

6 x 6 in .028 Chipboard 200 PER CASE
$58.24 / CASE
IN STOCK These 20
Envelopes & Mailers

20x14.25 #7 Kraft Self-Seal Padded Mailers 25-Pack

PN: B811SS25PK

20 x 14.25 in Fiber Padding 25 PER CASE
$49.88 / CASE
IN STOCK Protect your shipments with these 19
Envelopes & Mailers

19x12.5 #6 Kraft Self-Seal Padded Mailers 25-Pack

PN: B810SS25PK

19 x 12.5 in Fiber Padding 25 PER CASE
$33.81 / CASE
IN STOCK Professional-grade #5 kraft self-seal padded mailers deliver superior protection without extra cushioning materials. These 10.5x16 inch kraft padded envelopes feature puncture-resistant fiber padding that expands on handling, plus moisture-resistant construction with secure peel-and-seal closure. Trusted by e-commerce brands for reliable, cost-effective shipping.
Envelopes & Mailers

10.5x16 #5 Kraft Self-Seal Padded Mailers 25-Pack

PN: B809SS25PK

10 1/2 x 16 in Fiber Padding 25 PER CASE
$37.53 / CASE
IN STOCK Ship with confidence using these 9.5
Envelopes & Mailers

9.5x14.5 #4 Kraft Self-Seal Padded Mailers 25-Pack

PN: B807SS25PK

9 1/2 x 14 1/2 in Fiber Padding 25 PER CASE
$23.69 / CASE
IN STOCK Professional-grade #3 kraft self-seal padded mailers designed for e-commerce brands shipping small products and documents. Features expanding fiber padding that absorbs shock, natural rubber adhesive closure, and puncture-resistant construction–no additional cushioning needed. Pack of 25 mailers sized 8.5
Envelopes & Mailers

8.5x14.5 #3 Kraft Self-Seal Padded Mailers 25-Pack

PN: B806SS25PK

8 1/2 x 14 1/2 in Fiber Padding 25 PER CASE
$24.78 / CASE
IN STOCK Professional kraft padded mailers with natural rubber self-seal closure and expandable fiber padding that absorbs shock during handling. Puncture and moisture resistant design eliminates the need for extra cushioning. Perfect for e-commerce brands shipping lightweight to medium items–25 mailers per case, ready to ship.
Envelopes & Mailers

12x8.5 #2 Kraft Self-Seal Padded Mailers 25-Pack

PN: B805SS25PK

12 x 8.5 in Fiber Padding 25 PER CASE
$36.22 / CASE
IN STOCK Professional-grade kraft self-seal padded mailers sized 7.25
Envelopes & Mailers

7.25x12 #1 Kraft Self-Seal Padded Mailers 25-Pack

PN: B804SS25PK

7 1/4 x 12 in Fiber Padding 25 PER CASE
$26.79 / CASE
IN STOCK Professional kraft self-seal padded mailers built for e-commerce brands shipping small items with confidence. 6x10 #0 size features fiber padding that expands on contact to absorb shock and protect contents, plus moisture and puncture-resistant construction. Case of 25 mailers ready to ship.
Envelopes & Mailers

6x10 #0 Kraft Self-Seal Padded Mailers 25-Pack

PN: B803SS25PK

6 x 10 in Fiber Padding 25 PER CASE
$20.62 / CASE
IN STOCK Professional kraft padded mailers (20x14.25
Envelopes & Mailers

20x14.25 #7 Kraft Self-Seal Padded Mailers 50/Case

PN: B811SS

20 x 14.25 in Fiber Padding 50 PER CASE
$74.10 / CASE
IN STOCK Protect your shipments with Packrift's 19 x 12.5
Envelopes & Mailers

19x12.5 #6 Kraft Self-Seal Padded Mailers 50/Case

PN: B810SS

19 x 12.5 in Fiber Padding 50 PER CASE
$62.08 / CASE
IN STOCK 10.5x16
Envelopes & Mailers

10.5x16 #5 Kraft Self-Seal Padded Mailers 100/Case

PN: B809SS

10 1/2 x 16 in Fiber Padding 100 PER CASE
$94.12 / CASE
IN STOCK Professional Kraft #4 self-seal padded mailers measuring 9.5
Envelopes & Mailers

9.5x14.5 #4 Kraft Self-Seal Padded Mailers 100/Case

PN: B807SS

9 1/2 x 14 1/2 in Fiber Padding 100 PER CASE
$69.65 / CASE
IN STOCK Professional #3 kraft self-seal padded mailers (14.5
Envelopes & Mailers

14.5x8.5 #3 Kraft Self-Seal Padded Mailers 100/Case

PN: B806SS

14 1/2 x 8.5 in Fiber Padding 100 PER CASE
$73.79 / CASE
IN STOCK Professional kraft padded mailers (12
Envelopes & Mailers

12x8.5 #2 Kraft Self-Seal Padded Mailers 100/Case

PN: B805SS

12 x 8.5 in Fiber Padding 100 PER CASE
$62.44 / CASE
IN STOCK Ship with confidence using our 7.25x12
Envelopes & Mailers

7.25x12 #1 Kraft Self-Seal Padded Mailers 100/Case

PN: B804SS

7 1/4 x 12 in Fiber Padding 100 PER CASE
$54.51 / CASE
IN STOCK Protect your products in transit with these 6 x 10
Envelopes & Mailers

6x10 #0 Kraft Self-Seal Padded Mailers 250/Case

PN: B803SS

6 x 10 in Fiber Padding 250 PER CASE
$112.20 / CASE

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