Letter Envelopes

LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 250/Pack, Electric Cherry (WS-2995-250)~#|#~sp5822112_sc7LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 250/Pack, Electric Cherry (WS-2995-250)~#|#~sp5873624_sc7
Item: 23996109
Model: WS-2995-250
No reviews yet
Price is $44.89
Unit of measure 250/Pack
Free delivery by Wed, Jul 22
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, Sunflower (LUX-4260-12-50)~#|#~sp12274947_sc7LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, Sunflower (LUX-4260-12-50)~#|#~sp12275007_sc7
Item: 24162051
Model: LUX-4260-12-50
Price is $39.09
Unit of measure 50/Pack
Free delivery by Wed, Jul 22
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JAM Paper #10 Policy Metallic Business Envelopes, 4.125 x 9.5, Stardream Gold, 50/Pack (1261602I)~#|#~m003904738_sc7JAM Paper #10 Policy Metallic Business Envelopes, 4.125 x 9.5, Stardream Gold, 50/Pack (1261602I)~#|#~m003904737_sc7
Item: 1588585
Model: 1261602I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Wed, Jul 22
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LUX #10 Window Envelopes, 4 1/8" x 9 1/2", 24 lb. White, Machine Insertable, 250 Qty (28460-MI-250)~#|#~m004064026_sc7
Item: 2146394
Model: 28460-MI-250
No reviews yet
Price is $56.69
Unit of measure 250/Pack
Free delivery by Wed, Jul 22
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JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Cotton Gray, 50 Pack (4860-SG-50)~#|#~sp226423802_sc7JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Cotton Gray, 50 Pack (4860-SG-50)~#|#~sp226423801_sc7
Item: 24578396
Model: 4860-SG-50
No reviews yet
Price is $26.19
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Cotton Gray, 250 Pack (4860-SG-250)~#|#~sp226423810_sc7JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Cotton Gray, 250 Pack (4860-SG-250)~#|#~sp226423809_sc7
Item: 24578400
Model: 4860-SG-250
No reviews yet
Price is $64.99
Unit of measure 250/Pack
Free delivery by Wed, Jul 22
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Dark Grey, 25/Pack (36396445)~#|#~m004671983_sc7JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Dark Grey, 25/Pack (36396445)~#|#~m004671982_sc7
Item: 261458
Model: 36396445
Price is $14.89
Unit of measure 25/Pack
Delivery by Wed, Jul 22
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 25/Pack (15847)~#|#~m003904529_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 25/Pack (15847)~#|#~m003904528_sc7
Item: 263898
Model: 15847
Price is $20.49
Unit of measure 25/Pack
Delivery by Wed, Jul 22
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Green, 50/Pack (21514959I)~#|#~A674BC30-B71C-46BF-9F820C4A9D1CB744_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Green, 50/Pack (21514959I)~#|#~7B341DCC-3850-41A6-9A3D4193869C758E_sc7
Item: 2633062
Model: 21514959I
No reviews yet
Price is $29.99
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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LUX 4 1/8" x 9 1/2" #10 70lbs. Open End Envelopes, Teal Blue, 50/Pack~#|#~m000081286_sc7
Item: 281897
Model: LUX-7716-25-50
No reviews yet
Price is $30.49
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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JAM Paper Peel & Seal #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 25/Pack (11789)~#|#~sp36388124_sc7JAM Paper Peel & Seal #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 25/Pack (11789)~#|#~sp36388044_sc7
Item: 263862
Model: 11789
Price is $10.29
Unit of measure 25/Pack
Delivery by Wed, Jul 22
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LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes W/Glue Closure, Azalea Metallic Pink~#|#~m004940424_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes W/Glue Closure, Azalea Metallic Pink~#|#~m005823902_sc7
Item: 281916
Model: 5360-24-50
Price is $23.89
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes W/Glue Closure, Gold Metallic~#|#~m004940416_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes W/Glue Closure, Gold Metallic~#|#~m005823910_sc7
Item: 281925
Model: 5360-07-50
Price is $42.99
Unit of measure 50/Pack
Free delivery by Wed, Jul 22
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Avocado Green, 1000/BX~#|#~m000081265_sc7
Item: 386990
Model: EX7716-27-1000
No reviews yet
Price is $340.39
Unit of measure 1000/Box
Free delivery by Wed, Jul 22
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LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes W/Peel&Press, Seafoam Blue, 500/BX~#|#~m005824022_sc7
Item: 517493
Model: LUX-4860-113500
No reviews yet
Price is $101.29
Free delivery by Wed, Jul 22
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Midnight Black, 250/BX~#|#~m004940475_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Midnight Black, 250/BX~#|#~m005824009_sc7
Item: 387486
Model: F-4560-B-250
Price is $47.79
Unit of measure 250/Box
Free delivery by Wed, Jul 22
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LUX 60lbs. 4 1/8" x 9 1/2" #10 Bright Regular Envelopes, Bright Blue, 1000/BX~#|#~m000081290_sc7
Item: 384462
Model: 4260-18-1000
No reviews yet
Price is $166.69
Unit of measure 1000/Box
Free delivery by Wed, Jul 22
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LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes W/Peel&Press, Seafoam Blue, 250/BX~#|#~m005824022_sc7
Item: 517285
Model: LUX-4860-113250
No reviews yet
Price is $92.49
Free delivery by Wed, Jul 22
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JAM Paper #10 Business Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Silver, 100/Pack (01323306B)~#|#~m004671920_sc7JAM Paper #10 Business Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Silver, 100/Pack (01323306B)~#|#~m004671919_sc7
Item: 260947
Model: 01323306B
No reviews yet
Price is $127.99
Unit of measure 100/Box
Free delivery by Wed, Jul 22
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Quality Park Gummed V-Flap Security Tinted Business #10 Envelopes, 4 1/8" x 9 1/2", White, 500/Bx (QUA90030)~#|#~s0462616_sc7
Item: QUA90030
Model: QUA90030
No reviews yet
Price is $50.63
Unit of measure 500/Box
Free delivery by Tue, Jul 21
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Grey, 25/Pack (36396438)~#|#~m004671977_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Grey, 25/Pack (36396438)~#|#~m004671976_sc7
Item: 261457
Model: 36396438
No reviews yet
Price is $19.49
Unit of measure 25/Pack
Delivery by Wed, Jul 22
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JAM Paper #10 Policy Metallic Business Envelopes, 4 1/8" x 9 1/2", Stardream Gold, 25/Pack (1261602)~#|#~m003904738_sc7JAM Paper #10 Policy Metallic Business Envelopes, 4 1/8" x 9 1/2", Stardream Gold, 25/Pack (1261602)~#|#~m003904737_sc7
Item: 261973
Model: 1261602
No reviews yet
Price is $23.59
Unit of measure 25/Pack
Delivery by Wed, Jul 22
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LUX 80lb 4 1/8"x9 1/2" Square Flap Metallic #10 Envelopes, Bronze, 500/BX~#|#~m004940419_sc7LUX 80lb 4 1/8"x9 1/2" Square Flap Metallic #10 Envelopes, Bronze, 500/BX~#|#~m005823903_sc7
Item: 516491
Model: 5360-12-500
No reviews yet
Price is $158.69
Free delivery by Wed, Jul 22
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JAM Paper #10 Booklet Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Blue, 25/Pack (1327705)~#|#~284E4566-35DF-4D5A-BBB003391DDD875E_sc7
Item: 260899
Model: 1327705
No reviews yet
Price is $46.99
Unit of measure 25/Pack
Free delivery by Wed, Jul 22
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JAM Paper #10 Business Envelope 4 1/8" x 9 1/2", Dark Green, 500/Box (21514959H)~#|#~2BD223DB-3D49-4D7B-B89A3A176EC53DD7_sc7JAM Paper #10 Business Envelope 4 1/8" x 9 1/2", Dark Green, 500/Box (21514959H)~#|#~74E020BF-1522-4A43-BB5FD6934A5F484B_sc7
Item: 2633061
Model: 21514959H
No reviews yet
Price is $77.99
Unit of measure 500/Box
Free delivery by Wed, Jul 22
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JAM Paper Kraft Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Brown Kraft Paper Bag, 500/Pack (6314842H)~#|#~sp74308924_sc7JAM Paper Kraft Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Brown Kraft Paper Bag, 500/Pack (6314842H)~#|#~sp74308921_sc7
Item: 1589710
Model: 6314842H
No reviews yet
Price is $189.49
Unit of measure 500/Box
Free delivery by Wed, Jul 22
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JAM Paper #10 Business Envelopes, 4.125 x 9.5, Dark Purple, Bulk 1000/Carton (563912516B)~#|#~sp74308923_sc7JAM Paper #10 Business Envelopes, 4.125 x 9.5, Dark Purple, Bulk 1000/Carton (563912516B)~#|#~sp74308920_sc7
Item: 261646
Model: 563912516B
No reviews yet
Price is $272.99
Unit of measure 1000/Carton
Free delivery by Wed, Jul 22
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LUX 80lb 4 1/8"x9 1/2" Open End #10 Envelopes W/Peel&Press, White Linen, 250/BX~#|#~m000211243_sc7
Item: 515097
Model: 7716-WLI-250
No reviews yet
Price is $109.09
Free delivery by Wed, Jul 22
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JAM Paper #10 Tyvek Business Tear-Proof Envelopes, 4.125 x 9.5, White, 500/Box (2131077D)~#|#~m004542908_sc7JAM Paper #10 Tyvek Business Tear-Proof Envelopes, 4.125 x 9.5, White, 500/Box (2131077D)~#|#~m004542907_sc7
Item: 2329378
Model: 2131077D
No reviews yet
Price is $280.19
Unit of measure 500/Box
Free delivery by Wed, Jul 22
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JAM Paper #10 Business Strathmore Envelopes, 4.125 x 9.5, Bright White Wove, Bulk 1000/Carton (64933B)~#|#~sp112110502_sc7JAM Paper #10 Business Strathmore Envelopes, 4.125 x 9.5, Bright White Wove, Bulk 1000/Carton (64933B)~#|#~sp112110501_sc7
Item: 262630
Model: 64933B
No reviews yet
Price is $227.69
Unit of measure 1000/Carton
Free delivery by Wed, Jul 22
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LUX 4 1/8" x 9 1/2" #10 60lbs. Envelopes, White With Black LUX Lining, 50/Pack~#|#~m000081261_sc7
Item: 281872
Model: FLWH4260-02-50
No reviews yet
Price is $26.79
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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Quality Park Redi-Strip Self Seal Security Tinted #10 Business Envelope 4 1/8" x 9 1/2", White, 1000/Carton (QUA69122B)
Quality Park Redi-Strip Self Seal Security Tinted #10 Business Envelope 4 1/8" x 9 1/2", White, 1000/Carton (QUA69122B) is New at Staples
Item: QUA69122B
Model: QUA69122B
No reviews yet
Price is $274.04
Unit of measure 1000/Carton
Free Next-Day eligible by Mon, Jul 20
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LUX 60lbs. 4 1/8" x 9 1/2" #10 Business Envelopes, White With Silver LUX Lining, 1000/BX~#|#~m000081264_sc7
Item: 388426
Model: FLWH4260-03-100
No reviews yet
Price is $180.59
Unit of measure 1000/Box
Free delivery by Wed, Jul 22
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Baby Blue, 50/Pack (2155778I)~#|#~sp121511965_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Baby Blue, 50/Pack (2155778I)~#|#~sp121511964_sc7
Item: 1588693
Model: 2155778I
Price is $20.49
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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JAM Paper Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 1000/Pack (75747-1M)~#|#~sp228873488_sc7
Item: 24578381
Model: 75747-1M
No reviews yet
Price is $178.29
Unit of measure 1000/Pack
Free delivery by Wed, Jul 22
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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Blue, 50/Pack (5360-13-50)~#|#~sp228873505_sc7
Item: 24578435
Model: 5360-13-50
Price is $21.79
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 250/Pack, Mandarin (LUX-4260-11-250)~#|#~sp12274947_sc7LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 250/Pack, Mandarin (LUX-4260-11-250)~#|#~sp12275002_sc7
Item: 24162011
Model: LUX-4260-11-250
No reviews yet
Price is $65.89
Unit of measure 250/Pack
Free delivery by Wed, Jul 22
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LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes W/Peel&Press, Wisteria Purple, 500/BX~#|#~m004940493_sc7LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes W/Peel&Press, Wisteria Purple, 500/BX~#|#~m005824014_sc7
Item: 517269
Model: LUX-4860-106500
Price is $142.49
Free delivery by Wed, Jul 22
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LUX #10 Square Flap Envelopes (4 1/8 x 9 1/2) 50/Pack, Baby Blue (EX4860-13-50)~#|#~sp14807369_sc7
LUX #10 Square Flap Envelopes (4 1/8 x 9 1/2) 50/Pack, Baby Blue (EX4860-13-50) is Out of stock
Item: 24260916
Model: EX4860-13-50
No reviews yet
Price is $25.19
Unit of measure 50/Pack
LUX 60lbs. 4 1/8" x 9 1/2" #10 Regular Envelopes, Blue Parchment, 250/Box (6660-12-250)~#|#~m000081289_sc7
LUX 60lbs. 4 1/8" x 9 1/2" #10 Regular Envelopes, Blue Parchment, 250/Box (6660-12-250) is Out of stock
Item: 385529
Model: 6660-12-250
No reviews yet
Price is $51.69
Unit of measure 250/Box

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.