Sponsored Products
Neenah Paper CLASSIC CREST #10 Envelope, Gummed Flap, 4 1/8 x 9 1/2, Avon Brilliant White, 500/Box (01843)~#|#~m002272798_sc7
Item: 2657444
Model: NEE6553000
Price is $56.73
Free delivery by Wed, Apr 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 $15.49
Unit of measure 30/Box
Delivery by Wed, Apr 23
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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 $7.79
Unit of measure 25/Pack
Delivery by Wed, Apr 23
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Mead #10 Business Envelopes, 4-1/8" x 9-1/2", White, 50/Pack (75050)~#|#~sp130850205_sc7Mead #10 Business Envelopes, 4-1/8" x 9-1/2", White, 50/Pack (75050)~#|#~sp130850204_sc7
Item: 294470
Model: 75050
Price is $5.09
Unit of measure 50/Pack
Delivery by Wed, Apr 23
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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 $19.99
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Gold Yellow, 25/Pack (900906635)~#|#~sp82108684_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Gold Yellow, 25/Pack (900906635)~#|#~sp82108682_sc7
Item: 261864
Model: 900906635
Price is $18.99
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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LUX 60lbs. 4 1/8" x 9 1/2" #10 Regular Envelopes, Bright Blue, 500/BX~#|#~m000081290_sc7
Item: 384473
Model: 4260-18-500
Price is $126.69
Unit of measure 500/Box
Free delivery by Thu, May 01
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LUX 70lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Bright White, 500/BX~#|#~m000211252_sc7
Item: 513630
Model: 4860-70W-500
Price is $104.89
Free delivery by Thu, May 01
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Great Papers Jolly Holly #10 Envelope (2011611)~#|#~s0439871_sc7Great Papers Jolly Holly #10 Envelope (2011611)~#|#~s0440782_sc7
Item: 401027
Model: 2011611
Price is $7.95
Unit of measure 40/Pack
Delivery by Fri, May 02
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JAM Paper #10 Business Colored Envelopes, 4.125 x 9.5, Ultra Fuchsia Pink, Bulk 500/Box (15847H)~#|#~m003904529_sc7JAM Paper #10 Business Colored Envelopes, 4.125 x 9.5, Ultra Fuchsia Pink, Bulk 500/Box (15847H)~#|#~m003904528_sc7
Item: 1589650
Model: 15847H
No reviews yet
Price is $151.79
Unit of measure 500/Box
Free delivery by Mon, Apr 28
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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Blue, 500/Pack (5360-13-500)~#|#~sp228873255_sc7
Item: 24578294
Model: 5360-13-500
No reviews yet
Price is $137.99
Unit of measure 500/Pack
Free delivery by Mon, Apr 28
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LUX #10 Square Flap Invitation Envelopes (4 1/8 x 9 1/2) 50/Pack, Navy (LUX-4860-103-50)~#|#~sp14807379_sc7
Item: 24260395
Model: LUX-4860-103-50
Price is $22.09
Unit of measure 50/Pack
Delivery by Thu, May 01
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JAM Paper Strathmore #10 Business Envelope, 4 1/8" x 9 1/2", Ivory Wove, 25/Pack (191165)~#|#~sp134498412_sc7JAM Paper Strathmore #10 Business Envelope, 4 1/8" x 9 1/2", Ivory Wove, 25/Pack (191165)~#|#~sp134498266_sc7
Item: 262564
Model: 191165
Price is $19.99
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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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 $25.39
Unit of measure 50/Pack
Delivery by Thu, May 01
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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 $10.09
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Blue, 25/Pack (15861)~#|#~sp111772444_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Blue, 25/Pack (15861)~#|#~sp111772442_sc7
Item: 263914
Model: 15861
Price is $10.09
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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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 $143.79
Free delivery by Thu, May 01
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JAM Paper #10 Metallic Business Envelopes, 4.125 x 9.5, Stardream Silver, 25/Pack (SD5360 06)~#|#~m004672467_sc7JAM Paper #10 Metallic Business Envelopes, 4.125 x 9.5, Stardream Silver, 25/Pack (SD5360 06)~#|#~m004672466_sc7
Item: 261992
Model: SD5360 06
No reviews yet
Price is $33.09
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 1000/Pack (75746-1M)~#|#~sp228873583_sc7JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 1000/Pack (75746-1M)~#|#~sp228873582_sc7
Item: 24578649
Model: 75746-1M
No reviews yet
Price is $139.39
Unit of measure 1000/Pack
Free delivery by Mon, Apr 28
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Bazic Kraft Self Seal Security Tinted #10 Business Envelope, 4 1/8" x 9 1/2", 500/Pack (BAZ5064)~#|#~sp151423994_sc7
Item: 24516828
Model: BAZ5064
No reviews yet
Price is $40.89
Unit of measure 500/Pack
Free delivery by Wed, Apr 30
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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 $87.99
Free delivery by Thu, May 01
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Box, 24lb. Natural Linen (WS-2961-50)~#|#~m004063954_sc7
Item: 2146462
Model: WS-2961-50
No reviews yet
Price is $31.49
Unit of measure 50/Pack
Delivery by Thu, May 01
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 500/Pack, White w/ Sec Tint, P&S (75747-500)~#|#~sp14807366_sc7
Item: 24260678
Model: 75747-500
Price is $110.09
Unit of measure 500/Pack
Free delivery by Thu, May 01
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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 $389.09
Unit of measure 1000/Box
Free delivery by Thu, May 01
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Natural, 250/BX~#|#~m000161321_sc7
Item: 385681
Model: 7716-N-250
No reviews yet
Price is $90.59
Unit of measure 250/Box
Free delivery by Thu, May 01
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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 Mon, Apr 28
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Violet Purple, 1000/Carton (15864B)~#|#~sp112110499_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Violet Purple, 1000/Carton (15864B)~#|#~sp112110498_sc7
Item: 263890
Model: 15864B
Price is $267.19
Unit of measure 1000/Carton
Free delivery by Mon, Apr 28
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 1000/Pack, Navy (LUX42601031000)~#|#~sp12274947_sc7LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 1000/Pack, Navy (LUX42601031000)~#|#~sp12275019_sc7
Item: 24161971
Model: LUX42601031000
Price is $283.99
Unit of measure 1000/Pack
Free delivery by Thu, May 01
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JAM Paper #10 Business Envelopes, 4.125 x 9.5, Dark Purple, Bulk 500/Box (563912516H)~#|#~sp132864538_sc7JAM Paper #10 Business Envelopes, 4.125 x 9.5, Dark Purple, Bulk 500/Box (563912516H)~#|#~sp132864537_sc7
Item: 1589705
Model: 563912516H
No reviews yet
Price is $167.79
Unit of measure 500/Box
Free delivery by Mon, Apr 28
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JAM Paper #10 Business Envelopes, 4.125 x 9.5, Dark Red, Bulk 1000/Carton (31511298B)~#|#~m005744846_sc7JAM Paper #10 Business Envelopes, 4.125 x 9.5, Dark Red, Bulk 1000/Carton (31511298B)~#|#~m000067704_sc7
Item: 261420
Model: 31511298B
No reviews yet
Price is $272.99
Unit of measure 1000/Carton
Free delivery by Mon, Apr 28
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LUX 4 1/8" x 9 1/2" #10 70lbs. Open End Envelopes, Grocery Bag Brown, 50/Pack~#|#~m000081273_sc7
Item: 281884
Model: 7716-GB-50
No reviews yet
Price is $46.49
Unit of measure 50/Pack
Free delivery by Thu, May 01
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JAM Paper #10 Invitation Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 1000/Carton (15847B)~#|#~m003904529_sc7JAM Paper #10 Invitation Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 1000/Carton (15847B)~#|#~m003904528_sc7
Item: 261197
Model: 15847B
No reviews yet
Price is $242.69
Unit of measure 1000/Carton
Free delivery by Mon, Apr 28
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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
LUX 60lb 4 1/8"x9 1/2" Square Flap #10 Envelopes W/Peel&Press, White W/Red LUX, 500/BX is Out of stock
Item: 516402
Model: FLWH4260-01-500
Price is $112.36
LUX #10 Window Envelopes, 4 1/8" x 9 1/2", 24 lb. White, Machine Insertable, 1000 Qty (28460-MI-1M)~#|#~m004064026_sc7
LUX #10 Window Envelopes, 4 1/8" x 9 1/2", 24 lb. White, Machine Insertable, 1000 Qty (28460-MI-1M) is Out of stock
Item: 2146382
Model: 28460-MI-1M
No reviews yet
Price is $82.69
Unit of measure 1000/Pack
JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Presidential Blue, 50/Pack (263912999I)~#|#~m003000919_sc7
JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Presidential Blue, 50/Pack (263912999I) is Out of stock
Item: 1588568
Model: 263912999I
No reviews yet
Price is $25.39
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.