Letter Envelopes

JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Teal Blue, 25/Pack (63924024)~#|#~sp132864328_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Teal Blue, 25/Pack (63924024)~#|#~sp132864327_sc7
Item: 1227786
Model: 63924024
No reviews yet
Price is $19.49
Unit of measure 25/Pack
Delivery by Fri, Jun 05
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JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Silver Stardream, 50/Pack (900905922I)~#|#~m004672038_sc7JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Silver Stardream, 50/Pack (900905922I)~#|#~m004672037_sc7
Item: 1588582
Model: 900905922I
Price is $65.89
Unit of measure 50/Pack
Free delivery by Fri, Jun 05
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JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Blue Recycled, Bulk 500/Box (15880H)~#|#~m003904550_sc7JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Blue Recycled, Bulk 500/Box (15880H)~#|#~m003904549_sc7
Item: 1589641
Model: 15880H
No reviews yet
Price is $202.99
Unit of measure 500/Box
Free delivery by Fri, Jun 05
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Gold Metallic, 500/BX~#|#~m004940416_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Gold Metallic, 500/BX~#|#~m005823910_sc7
Item: 384980
Model: 5360-07-500
No reviews yet
Price is $143.59
Unit of measure 500/Box
Free delivery by Wed, Jun 10
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Natural, 250/BX~#|#~m004940398_sc7LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Natural, 250/BX~#|#~m005823989_sc7
Item: 384601
Model: 4860-NPC-250
No reviews yet
Price is $102.49
Unit of measure 250/Box
Free delivery by Wed, Jun 10
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Midnight Black, 1000/BX~#|#~m004940475_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Midnight Black, 1000/BX~#|#~m005824009_sc7
Item: 387484
Model: F-4560-B-1000
No reviews yet
Price is $202.29
Unit of measure 1000/Box
Free delivery by Wed, Jun 10
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Violet Purple, 25/Pack (15864)~#|#~sp112110499_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Violet Purple, 25/Pack (15864)~#|#~sp112110498_sc7
Item: 263887
Model: 15864
Price is $20.49
Unit of measure 25/Pack
Delivery by Fri, Jun 05
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JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Orange Recycled, 25/Pack (15887)~#|#~m003904556_sc7JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Orange Recycled, 25/Pack (15887)~#|#~m003904555_sc7
Item: 261230
Model: 15887
No reviews yet
Price is $14.89
Unit of measure 25/Pack
Delivery by Fri, Jun 05
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JAM Paper #10 Metallic Business Envelopes, 4.125 x 9.5, Stardream Gold, 25/Pack (SD5360 07)~#|#~m003905201_sc7JAM Paper #10 Metallic Business Envelopes, 4.125 x 9.5, Stardream Gold, 25/Pack (SD5360 07)~#|#~m003905200_sc7
Item: 261972
Model: SD5360 07
No reviews yet
Price is $25.49
Unit of measure 25/Pack
Delivery by Fri, Jun 05
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LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Natural, 500/BX~#|#~m000161374_sc7
Item: 513623
Model: 4860-NPC-500
No reviews yet
Price is $89.59
Unit of measure 500/Box
Free delivery by Wed, Jun 10
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LUX 60lb 4 1/8"x9 1/2" Square Flap #10 Envelopes W/Peel&Press, White W/Red LUX, 500/BX~#|#~m000081263_sc7
Item: 516402
Model: FLWH4260-01-500
Price is $121.89
Free delivery by Wed, Jun 10
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JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Blush Pink, 500 Pack (4860-114-500)~#|#~sp226423806_sc7JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Blush Pink, 500 Pack (4860-114-500)~#|#~sp226423805_sc7
Item: 24578398
Model: 4860-114-500
No reviews yet
Price is $79.99
Unit of measure 500/Pack
Free delivery by Fri, Jun 05
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 1000/Box, 24lb. White Linen (WS-2960-1M)~#|#~m004063955_sc7
Item: 2146385
Model: WS-2960-1M
No reviews yet
Price is $160.79
Unit of measure 1000/Pack
Free delivery by Wed, Jun 10
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 50/Pack (15847I)~#|#~m003904529_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 50/Pack (15847I)~#|#~m003904528_sc7
Item: 1588564
Model: 15847I
Price is $20.49
Unit of measure 50/Pack
Delivery by Fri, Jun 05
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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, Jun 10
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JAM Paper #10 Booklet Envelope 4 1/8" x 9 1/2", Pastel Canary Yellow, 50/Pack (65912-50)~#|#~D0302FE4-E265-4424-92F4B2A1090EAEC7_sc7JAM Paper #10 Booklet Envelope 4 1/8" x 9 1/2", Pastel Canary Yellow, 50/Pack (65912-50)~#|#~F147BAE3-1287-42F8-998A8BC707B3499D_sc7
Item: 24604563
Model: 65912-50
No reviews yet
Price is $14.95
Unit of measure 50/Pack
Delivery by Fri, Jun 05
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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 Fri, Jun 05
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JAM Paper Self Seal #10 Policy Envelope 4 1/8" x 9 1/2", Natural, 50/Pack (7716-NPC-50)~#|#~8435FDC7-17D4-4DA7-B11D7C4E304EDAEB_sc7JAM Paper Self Seal #10 Policy Envelope 4 1/8" x 9 1/2", Natural, 50/Pack (7716-NPC-50)~#|#~2F44C80B-A54D-47A7-987771969A9C392B_sc7
Item: 24604491
Model: 7716-NPC-50
No reviews yet
Price is $13.95
Unit of measure 50/Pack
Delivery by Fri, Jun 05
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LUX 80lbs. 4 1/8" x 9 1/2" Metallic Square Flap Envelopes, Anthracite Metallic Gray, 1000/BX~#|#~m004940420_sc7LUX 80lbs. 4 1/8" x 9 1/2" Metallic Square Flap Envelopes, Anthracite Metallic Gray, 1000/BX~#|#~m005823900_sc7
Item: 385004
Model: 5360-15-1000
No reviews yet
Price is $277.59
Unit of measure 1000/Box
Free delivery by Wed, Jun 10
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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 Fri, Jun 05
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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 Fri, Jun 05
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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, Jun 10
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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 Fri, Jun 05
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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 Fri, Jun 05
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JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Blue, 50/Pack (PACV357I)~#|#~m003905168_sc7JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Blue, 50/Pack (PACV357I)~#|#~m003905167_sc7
Item: 1588572
Model: PACV357I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Fri, Jun 05
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Aqua Blue, 25/Pack (21520986)~#|#~m002934469_sc7JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Aqua Blue, 25/Pack (21520986)~#|#~m003904907_sc7
Item: 363434
Model: 21520986
No reviews yet
Price is $14.89
Unit of measure 25/Pack
Delivery by Fri, Jun 05
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Green, 1000/Carton (15862B)~#|#~sp111772450_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Green, 1000/Carton (15862B)~#|#~sp111772449_sc7
Item: 261287
Model: 15862B
No reviews yet
Price is $249.29
Unit of measure 1000/Carton
Free delivery by Fri, Jun 05
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LUX 70lb 4 1/8"x9 1/2" Open End #10 Envelopes, Grocery Bag Brown, 250/BX~#|#~m000081273_sc7
Item: 516427
Model: 7716-GB-250
No reviews yet
Price is $78.29
Free delivery by Wed, Jun 10
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LUX 80lb 4 1/8"x9 1/2" Open End #10 Envelopes, Navy Blue, 500/BX~#|#~m000081279_sc7
Item: 517160
Model: LUX-7716-103500
No reviews yet
Price is $211.89
Free delivery by Wed, Jun 10
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LUX #10 Square Flap Envelopes (4 1/8 x 9 1/2) 50/Pack, Smoke (EX4860-22-50)~#|#~sp14807360_sc7
Item: 24260421
Model: EX4860-22-50
No reviews yet
Price is $26.79
Unit of measure 50/Pack
Delivery by Wed, Jun 10
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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 Fri, Jun 05
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Business Envelopes W/Peel & Press, Smoke Gray, 1000/BX~#|#~m004940462_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Business Envelopes W/Peel & Press, Smoke Gray, 1000/BX~#|#~m005824005_sc7
Item: 386341
Model: EX4860-22-1000
No reviews yet
Price is $165.49
Unit of measure 1000/Box
Free delivery by Wed, Jun 10
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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 Fri, Jun 05
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JAM Paper #10 Business Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Red, 100/Pack (01323307B)~#|#~m000067476_sc7
Item: 260948
Model: 01323307B
No reviews yet
Price is $127.99
Unit of measure 100/Box
Free delivery by Fri, Jun 05
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Quality Park Redi-Seal Security Tinted Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (QUA11218)~#|#~sp46777632_sc7Quality Park Redi-Seal Security Tinted Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (QUA11218)~#|#~sp46777631_sc7
Item: QUA11218
Model: QUA11218
Price is $82.89
Unit of measure Box
Free delivery by Tue, Jun 02
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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 Fri, Jun 05
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Candy Pink, 1000/BX~#|#~m004940458_sc7LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Candy Pink, 1000/BX~#|#~m005824001_sc7
LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Candy Pink, 1000/BX is Out of stock
Item: 386322
Model: EX4860-14-1000
No reviews yet
Price is $169.69
Unit of measure 1000/Box
LUX 60lbs. 4 1/8" x 9 1/2" #10 Regular Envelopes, Blue Parchment, 500/BX~#|#~m000081289_sc7
LUX 60lbs. 4 1/8" x 9 1/2" #10 Regular Envelopes, Blue Parchment, 500/BX is Out of stock
Item: 385531
Model: 6660-12-500
No reviews yet
Price is $95.49
Unit of measure 500/Box
LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Quartz Metallic, 50/Pack~#|#~E3C45768-EEBF-435E-BDBE73282E3B9323_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Quartz Metallic, 50/Pack~#|#~C8FFC367-88FA-4BF1-BF994A897CFFE709_sc7
LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Quartz Metallic, 50/Pack is Out of stock
Item: 281930
Model: 5360-08-50
Price is $28.19
Unit of measure 50/Pack
JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Yellow, 50/Pack (PACV356I)~#|#~m002169008_sc7
JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Yellow, 50/Pack (PACV356I) is Out of stock
Item: 1588554
Model: PACV356I
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Price is $50.89
Unit of measure 50/Pack

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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.