Letter Envelopes

JAM Paper #10 Window Envelope, 4 1/8" x 9 1/2", White, 100/Pack (1633173I)~#|#~sp58557833_sc7JAM Paper #10 Window Envelope, 4 1/8" x 9 1/2", White, 100/Pack (1633173I)~#|#~sp137085580_sc7
Item: 2103312
Model: 1633173I
Price is $17.09
Unit of measure 100/Pack
Delivery by Fri, Jul 17
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Quality Park Redi-Seal Security Tinted Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (QUA11218)~#|#~sp145132158_sc7Quality Park Redi-Seal Security Tinted Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (QUA11218)~#|#~sp145132157_sc7
Item: 507690
Model: QUA11218
Price is $101.59
Unit of measure 500/Box
Free delivery by Tue, Jul 14
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Quality Park Redi-Strip Security Tinted #10 Treated Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box ~#|#~s1154906_sc7Quality Park Redi-Strip Security Tinted #10 Treated Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box ~#|#~s1172750_sc7
Item: 683586
Model: QUA90019R
Price is $95.99
Unit of measure 500/Box
Free delivery by Tue, Jul 14
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Orange, 50/Pack (15860I)~#|#~sp112110495_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Orange, 50/Pack (15860I)~#|#~sp112110494_sc7
Item: 1588559
Model: 15860I
Price is $17.09
Unit of measure 50/Pack
Delivery by Fri, Jul 17
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Great Papers #10 Business Envelope 4 1/8" x 9 1/2", Black, 40/Pack (2013208)~#|#~s0953749_sc7
Item: 1605564
Model: 2013208
Price is $7.99
Unit of measure 40/Pack
Delivery by Thu, Jul 23
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Quality Park Redi-Strip Security Tinted #10 Envelopes, 4-1/8" x 9-1/2", White, 30/Box (QUA69112)~#|#~s0375270_sc7Quality Park Redi-Strip Security Tinted #10 Envelopes, 4-1/8" x 9-1/2", White, 30/Box (QUA69112)~#|#~s0171469_sc7
Item: 813435
Model: QUA69112
Price is $24.99
Unit of measure 30/Box
Delivery by Tue, Jul 14
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, White w/ Sec Tint, P&S (75747-50)~#|#~sp14807366_sc7
Item: 24260683
Model: 75747-50
Price is $31.69
Unit of measure 50/Pack
Delivery by Thu, Jul 16
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Yellow, 25/Pack (15859)~#|#~sp111772364_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Yellow, 25/Pack (15859)~#|#~sp111772363_sc7
Item: 260986
Model: 15859
Price is $10.29
Unit of measure 25/Pack
Delivery by Fri, Jul 17
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Baby Blue, 25/Pack (2155778)~#|#~sp121511889_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Baby Blue, 25/Pack (2155778)~#|#~sp121511888_sc7
Item: 261365
Model: 2155778
Price is $19.49
Unit of measure 25/Pack
Delivery by Fri, Jul 17
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JAM Paper Peel & Seal #10 Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 50/Pack (11789I)~#|#~sp36388124_sc7JAM Paper Peel & Seal #10 Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 50/Pack (11789I)~#|#~sp36388044_sc7
Item: 1588623
Model: 11789I
Price is $16.99
Unit of measure 50/Pack
Delivery by Fri, Jul 17
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JAM Paper #10 Policy Envelope, 4 1/8" x 9 1/2", Olive, 50/Pack (125137469I)~#|#~0317A995-6346-4603-94E01FB41B4EF7F4_sc7
Item: 24557948
Model: 125137469I
No reviews yet
Price is $26.09
Unit of measure 50/Pack
Delivery by Fri, Jul 17
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Box, 24lb. White Linen (WS-2960-50)~#|#~m004063955_sc7
Item: 2146463
Model: WS-2960-50
Price is $32.29
Unit of measure 50/Pack
Delivery by Thu, Jul 16
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Quality Park Gummed Brightly Colored Business #10 Envelopes, 4-1/8" x 9-1/2", Red, 25/Pack~#|#~s0171214_sc7
Item: 507682
Model: QUA11134
Price is $8.19
Unit of measure 25/Pack
Delivery by Wed, Jul 15
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JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 25/Pack (6314842)~#|#~sp74308924_sc7JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 25/Pack (6314842)~#|#~sp74308921_sc7
Item: 261536
Model: 6314842
Price is $20.49
Unit of measure 25/Pack
Delivery by Fri, Jul 17
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Quality Park Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 1000/Carton (QUA90020B)~#|#~sp40322437_sc7Quality Park Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 1000/Carton (QUA90020B)~#|#~sp40322435_sc7
Item: 812435
Model: QUA90020B
Price is $92.49
Unit of measure 1000/Carton
Free delivery by Tue, Jul 14
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Quality Park Redi-Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (QUA11118)~#|#~sp40286632_sc7Quality Park Redi-Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (QUA11118)~#|#~sp40286631_sc7
Item: QUA11118
Model: QUA11118
Price is $80.50
Unit of measure Box
Free delivery by Fri, Jul 17
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, Navy (LUX-4260-103-50)~#|#~sp12274947_sc7LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, Navy (LUX-4260-103-50)~#|#~sp12275019_sc7
Item: 24161620
Model: LUX-4260-103-50
No reviews yet
Price is $38.19
Unit of measure 50/Pack
Free delivery by Thu, Jul 16
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JAM Paper #10 Business Envelope 4 1/8" x 9 1/2", White, 250/Pack (43687-250)~#|#~sp228873470_sc7JAM Paper #10 Business Envelope 4 1/8" x 9 1/2", White, 250/Pack (43687-250)~#|#~sp228873469_sc7
Item: 24578329
Model: 43687-250
Price is $31.69
Unit of measure 250/Pack
Delivery by Fri, Jul 17
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Neenah Capitol Bond light cockle 25% cotton #10 24# Bright white Recycled~#|#~s1001269_sc7
Item: 1968193
Model: 5248500
No reviews yet
Price is $334.99
Unit of measure 2/Carton
Free delivery by Thu, Jul 23
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LUX Peel & Seel Self Seal #10 Business Envelope, 4 1/2" x 9 1/2", White, 500/Pack (75746-500)~#|#~sp14807440_sc7
Item: 24260640
Model: 75746-500
No reviews yet
Price is $112.89
Unit of measure 500/Pack
Free delivery by Thu, Jul 16
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JAM Paper #10 Booklet Envelopes, 4 1/8" x 9 1/2", Avocado Green, 50/Pack (4260-102-50)~#|#~FE7F20AF-7B56-40C6-A7AA51B1A138DD11_sc7JAM Paper #10 Booklet Envelopes, 4 1/8" x 9 1/2", Avocado Green, 50/Pack (4260-102-50)~#|#~4B418384-B998-484A-96A10A61CECD25FC_sc7
Item: 24604495
Model: 4260-102-50
No reviews yet
Price is $14.95
Unit of measure 50/Pack
Delivery by Fri, Jul 17
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JAM Paper #10 Tyvek Business Envelope, 4 1/8" x 9 1/2", White, 25/Pack (2131077)~#|#~m004542908_sc7JAM Paper #10 Tyvek Business Envelope, 4 1/8" x 9 1/2", White, 25/Pack (2131077)~#|#~m004542907_sc7
Item: 2329379
Model: 2131077
Price is $15.89
Unit of measure 25/Pack
Delivery by Fri, Jul 17
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JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", White, 50/Pack (49856I)~#|#~sp115352044_sc7JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", White, 50/Pack (49856I)~#|#~sp115352043_sc7
Item: 1588599
Model: 49856I
Price is $17.09
Unit of measure 50/Pack
Delivery by Fri, Jul 17
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Neenah Paper #10 Business Envelope, 4 1/8" x 9 1/2", Classic tural White, 500/Box (NEE2803300)~#|#~m002294530_sc7
Item: 2622244
Model: NEE2803300
No reviews yet
Price is $64.99
Unit of measure 500/Box
Free delivery by Thu, Jul 16
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JAM Paper Self Seal #10 Booklet Envelope 4 1/8" x 9 1/2", White, 50/Pack (75746-50)~#|#~3AFDDC25-BCBE-41D2-B6EC48C84E0E7D06_sc7JAM Paper Self Seal #10 Booklet Envelope 4 1/8" x 9 1/2", White, 50/Pack (75746-50)~#|#~4E8014B3-0A90-4BAA-BFF44CF296C8DF22_sc7
Item: 24604594
Model: 75746-50
No reviews yet
Price is $14.95
Unit of measure 50/Pack
Delivery by Fri, Jul 17
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LUX #10 Regular (4 1/8 x 9 1/2) 50/Box, Airmail w/ Security Tint (WS-2956-50)~#|#~m004063949_sc7
Item: 2146693
Model: WS-2956-50
No reviews yet
Price is $18.29
Unit of measure 50/Pack
Delivery by Thu, Jul 16
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Smoke Gray, 250/BX~#|#~m004940462_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Smoke Gray, 250/BX~#|#~m005824005_sc7
Item: 386342
Model: EX4860-22-250
No reviews yet
Price is $55.99
Unit of measure 250/Box
Free delivery by Thu, Jul 16
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Quality Park #10 Business Envelope, 4-1/8" x 9-1/2", White, 50/Box (QUA69016)~#|#~s0171467_sc7Quality Park #10 Business Envelope, 4-1/8" x 9-1/2", White, 50/Box (QUA69016)~#|#~3856A88D-4B83-428E-B893D04EC624F435_sc7
Item: 813430
Model: QUA69016
Price is $22.69
Unit of measure 50/Box
Delivery by Tue, Jul 14
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JAM Paper Peel & Seal #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 1000/Carton (11789B)~#|#~sp36388124_sc7JAM Paper Peel & Seal #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 1000/Carton (11789B)~#|#~sp36388044_sc7
Item: 260851
Model: 11789B
Price is $261.29
Unit of measure 1000/Carton
Free delivery by Fri, Jul 17
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Mead Kraft Self Seal Security Tinted #10 Business Envelope 4 1/8" x 9 1/2", 45/Box, 12 Boxes/Bundle (MEA75026-12)~#|#~sp151425046_sc7Mead Kraft Self Seal Security Tinted #10 Business Envelope 4 1/8" x 9 1/2", 45/Box, 12 Boxes/Bundle (MEA75026-12)~#|#~sp151425047_sc7
Item: 24516679
Model: MEA75026-12
Price is $41.99
Unit of measure 12/Bundle
Free delivery by Tue, Jul 21
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LUX 80lb 4 1/8"x9 1/2" Open End #10 Envelopes W/Peel&Press, Natural, 250/BX~#|#~m000211241_sc7
Item: 515118
Model: 7716-NPC-250
No reviews yet
Price is $91.49
Free delivery by Thu, Jul 16
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Natural, 50/Pack (900926651I)~#|#~sp132864269_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Natural, 50/Pack (900926651I)~#|#~sp132864268_sc7
Item: 1588594
Model: 900926651I
Price is $20.49
Unit of measure 50/Pack
Delivery by Fri, Jul 17
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JAM Paper #10 Business Envelopes, 4 1/8" x 9 1/2", Ultra Fuchsia Pink, 100/Pack (15847d)~#|#~BE03D4BA-C047-4B00-99FC1BBF5E990CA7_sc7JAM Paper #10 Business Envelopes, 4 1/8" x 9 1/2", Ultra Fuchsia Pink, 100/Pack (15847d)~#|#~D119CDB6-5AB4-4271-857FDF38D0025578_sc7
Item: 24604531
Model: 15847d
No reviews yet
Price is $27.99
Unit of measure 100/Pack
Delivery by Fri, Jul 17
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JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 50/Pack (3984I)~#|#~sp111772303_sc7JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 50/Pack (3984I)~#|#~sp111772302_sc7
Item: 24295335
Model: 3984I
Price is $14.39
Unit of measure 50/Pack
Delivery by Fri, Jul 17
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LUX 4 1/8"x9 1/2" Open End #10 Envelopes, Bright White, 500/BX (7535-500)~#|#~5EC686DA-7AEC-499D-9D9404896C76D77A_sc7LUX 4 1/8"x9 1/2" Open End #10 Envelopes, Bright White, 500/BX (7535-500)~#|#~0C4B9FE1-3B5D-485E-8D78216FC0EADCB0_sc7
Item: 513617
Model: 7535-500
Price is $119.29
Free delivery by Thu, Jul 16
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Brown, 25/Pack (V01722)~#|#~sp137084310_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Brown, 25/Pack (V01722)~#|#~sp137084266_sc7
Item: 261870
Model: V01722
No reviews yet
Price is $18.69
Unit of measure 25/Pack
Delivery by Fri, Jul 17
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LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Bronze Metallic, 50/Pack~#|#~m004940419_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Bronze Metallic, 50/Pack~#|#~m005823903_sc7
Item: 281917
Model: 5360-12-50
No reviews yet
Price is $26.79
Unit of measure 50/Pack
Delivery by Thu, Jul 16
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Baby Pink, 25/Pack (2155777)~#|#~m002934212_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Baby Pink, 25/Pack (2155777)~#|#~m002934211_sc7
Item: 261385
Model: 2155777
Price is $20.49
Unit of measure 25/Pack
Delivery by Fri, Jul 17
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JAM Paper #10 Self Seal Policy Envelopes, 4 1/8" x 9 1/2", Strathmore White, 50/Pack (7716-WLI-50)~#|#~6E821E8F-5177-4680-BAA135A9177556E2_sc7JAM Paper #10 Self Seal Policy Envelopes, 4 1/8" x 9 1/2", Strathmore White, 50/Pack (7716-WLI-50)~#|#~E455C262-24B6-42A8-BC866CFE5F843B19_sc7
Item: 24604525
Model: 7716-WLI-50
No reviews yet
Price is $13.95
Unit of measure 50/Pack
Delivery by Fri, Jul 17
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Dark Purple, 50/Pack (563912516I)~#|#~sp132864355_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Dark Purple, 50/Pack (563912516I)~#|#~sp132864354_sc7
Item: 1588603
Model: 563912516I
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Fri, Jul 17
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Letter envelopes are an essential office supply for any home or office. These standard, versatile envelopes can be used to mail letters, checks, documents and more. At Staples, you can buy letter size envelopes in bulk in packs of anywhere from 25 to 2,500. Learn about the different types of letter envelopes below.

What Are Letter Envelopes?

A letter envelope is a sealable paper envelope typically measuring 4 ⅛ inches by 9 ½ inches, also known as a #10 envelope. Letter envelopes are not meant to contain thick or heavy objects. Rather, they’re meant to hold paper and other thin, light and flat materials. A letter-size envelope is also often compatible with a printer for those who want to print addresses rather than write them by hand. These #10 envelopes are the perfect size for mailing letters or documents because they are not too small to be accepted by postal services and not too big to require extra postage.

Types of Letter Envelopes

Letter envelopes also come in several different styles, the most common of which are described below.

  • Environmentally Friendly Envelopes - These are made from recycled paper and are great for households or businesses that do a lot of mailing to reduce environmental impact.
  • Business Envelopes - These envelopes include a clear plastic window for parts of the documents inside to be made visible. These windows have securely gummed closures to ensure that the contents of the envelope stay protected.
  • Multi-Colored Envelopes - Letter envelopes come in a variety of color options, including beige, pink, yellow, green, purple and more.
  • V-Flap Envelopes - The standard letter envelope is designed with a rectangular adhesive flap, but triangular, or “v-flap,” adhesive flaps are also available and are commonly used with greeting cards and invitations.
  • Linen Envelopes - Some letter envelopes come with a linen finish to set your letter apart and add an elegant touch.

How Do I Mail a Letter Envelope?

Here are the steps needed to mail a classic #10 letter envelope:

  1. On the side without the seal, write or print the recipient's address in the middle with a legible pen (pencil marks can dull or rub off in transit). Write the sender’s address in the envelope’s top left corner.
  2. In the top right corner, you will need to place adequate postage for the envelope to reach its destination.
  3. With the material you want to send inside the envelope, seal it by adding a light amount of moisture to the adhesive flap. If you don’t prefer to use your tongue, you can use a moist sponge or cotton swab to do this. Alternatively, you can even use tape or glue sticks to seal envelopes. Some letter envelope varieties are self-seal or peel-and-seal and are able to seal on their own without needing added moisture.
  4. Place the envelope in a USPS mailbox or bring it to a post office.