JAM Paper #10 Business Envelopes, 4.125 x 9.5, Dark Red, 25/Pack (31511298)~#|#~m005744846_sc7JAM Paper #10 Business Envelopes, 4.125 x 9.5, Dark Red, 25/Pack (31511298)~#|#~m000067704_sc7
Item: 261408
Model: 31511298
No reviews yet
Price is $18.49
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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JAM Paper #10 Business Foil Envelopes with Peel & Seal Closure, 4 1/8" x 9 1/2", Black, 100/Pack (01327704B)~#|#~sp137085716_sc7
Item: 260952
Model: 01327704B
No reviews yet
Price is $137.79
Unit of measure 100/Box
Free delivery by Mon, Apr 28
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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 $38.09
Unit of measure 50/Pack
Free delivery by Thu, May 01
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JAM Paper #10 Policy Business Strathmore Envelopes, 4.125 x 9.5, Natural White Wove, 25/Pack (191249)~#|#~m007063366_sc7JAM Paper #10 Policy Business Strathmore Envelopes, 4.125 x 9.5, Natural White Wove, 25/Pack (191249)~#|#~m007049471_sc7
Item: 262548
Model: 191249
Price is $14.49
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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LUX #10 Square Flap (4 1/8 x 9 1/2) 50/Pack, Champagne Metallic (5360-M08-50)~#|#~sp14807455_sc7
Item: 24260283
Model: 5360-M08-50
No reviews yet
Price is $24.39
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", Bright White Wove, 25/Pack (64933)~#|#~sp112110502_sc7JAM Paper Strathmore #10 Business Envelope, 4 1/8" x 9 1/2", Bright White Wove, 25/Pack (64933)~#|#~sp112110501_sc7
Item: 262529
Model: 64933
Price is $19.19
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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LUX #10 Open End Envelopes (4 1/8 x 9 1/2) 50/Pack, Silver Metallic (7716-06-50)~#|#~sp12274947_sc7LUX #10 Open End Envelopes (4 1/8 x 9 1/2) 50/Pack, Silver Metallic (7716-06-50)~#|#~sp12275008_sc7
Item: 24162063
Model: 7716-06-50
Price is $35.02
Unit of measure 50/Pack
Free delivery by Thu, May 01
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JAM Paper #10 Business Envelopes, 4.125 x 9.5, Dark Grey, Bulk 500/Box (36396438H)~#|#~m004671977_sc7JAM Paper #10 Business Envelopes, 4.125 x 9.5, Dark Grey, Bulk 500/Box (36396438H)~#|#~m004671976_sc7
Item: 1589262
Model: 36396438H
Price is $173.69
Unit of measure 500/Box
Free delivery by Mon, Apr 28
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LUX 70lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Baby Blue, 250/BX~#|#~m004940457_sc7LUX 70lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Baby Blue, 250/BX~#|#~m005824016_sc7
Item: 516411
Model: EX4860-13-250
No reviews yet
Price is $91.49
Free delivery by Thu, May 01
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LUX 60lbs. 4 1/8" x 9 1/2" #10 Business Envelopes, White With Silver LUX Lining, 250/BX~#|#~m000081264_sc7
Item: 387906
Model: FLWH4260-03-250
No reviews yet
Price is $104.59
Unit of measure 250/Box
Free delivery by Thu, May 01
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Box, White w/ Simple Seal~#|#~m004063975_sc7
Item: 2147426
Model: 28726-50
No reviews yet
Price is $30.39
Unit of measure 50/Pack
Delivery by Thu, May 01
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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 Mon, Apr 28
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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 $117.29
Unit of measure 500/Box
Free delivery by Wed, Apr 23
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JAM Paper #10 Business Strathmore Envelopes, 4.125 x 9.5, Bright White Wove, Bulk 500/Box (64933H)~#|#~sp112110502_sc7JAM Paper #10 Business Strathmore Envelopes, 4.125 x 9.5, Bright White Wove, Bulk 500/Box (64933H)~#|#~sp112110501_sc7
Item: 1589697
Model: 64933H
No reviews yet
Price is $166.19
Unit of measure 500/Box
Free delivery by Mon, Apr 28
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Over 30
LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Grocery Bag Brown, 250/BX~#|#~m004940396_sc7LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Grocery Bag Brown, 250/BX~#|#~m005823987_sc7
Item: 384583
Model: 4860-GB-250
No reviews yet
Price is $91.49
Unit of measure 250/Box
Free delivery by Thu, May 01
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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 $206.29
Unit of measure 1000/Box
Free delivery by Thu, May 01
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LUX 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Crystal Clear, 1000/BX~#|#~m000161313_sc7
Item: 385993
Model: CC10-1000
No reviews yet
Price is $268.49
Unit of measure 1000/Box
Free delivery by Thu, May 01
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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
Item: 24260916
Model: EX4860-13-50
No reviews yet
Price is $24.49
Unit of measure 50/Pack
Delivery by Thu, May 01
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LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Crystal Metallic, 50/Pack~#|#~m004940428_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Crystal Metallic, 50/Pack~#|#~m005823906_sc7
Item: 281920
Model: 5360-30-50
No reviews yet
Price is $39.09
Unit of measure 50/Pack
Free delivery by Thu, May 01
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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 $19.99
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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JAM Paper #10 Policy Metallic Envelopes, 4.125 x 9.5, Stardream Silver, 25/Pack (900905922)~#|#~m004672038_sc7JAM Paper #10 Policy Metallic Envelopes, 4.125 x 9.5, Stardream Silver, 25/Pack (900905922)~#|#~m004672037_sc7
Item: 261993
Model: 900905922
No reviews yet
Price is $26.99
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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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 $16.69
Unit of measure 50/Pack
Delivery by Mon, Apr 28
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Black Linen, 25/Pack (V01218)~#|#~m003905223_sc7JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Black Linen, 25/Pack (V01218)~#|#~m003905222_sc7
Item: 261584
Model: V01218
Price is $12.99
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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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 $14.49
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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Over 30
LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Anthracite Metallic Gray, 50/Pack~#|#~m004940420_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Anthracite Metallic Gray, 50/Pack~#|#~m005823900_sc7
Item: 281914
Model: 5360-15-50
No reviews yet
Price is $41.49
Unit of measure 50/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, 500/BX~#|#~m000081265_sc7
Item: 386994
Model: EX7716-27-500
No reviews yet
Price is $197.07
Unit of measure 500/Box
Free delivery by Thu, May 01
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Over 30
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
Item: 281930
Model: 5360-08-50
No reviews yet
Price is $26.79
Unit of measure 50/Pack
Delivery by Thu, May 01
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Navy Blue, 250/BX~#|#~m000081279_sc7
Item: 388693
Model: LUX-7716-103-25
No reviews yet
Price is $124.98
Unit of measure 250/Box
Free delivery by Thu, May 01
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Over 30
JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", White, 1000/Carton (35532B)~#|#~sp4800450_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", White, 1000/Carton (35532B)~#|#~sp4800449_sc7
Item: 2633055
Model: 35532B
Price is $87.99
Unit of measure 1000/Carton
Free delivery by Mon, Apr 28
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Over 30
JAM Paper #10 Business Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Gold, 25/Pack (1323305)~#|#~sp137086460_sc7JAM Paper #10 Business Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Gold, 25/Pack (1323305)~#|#~sp137086019_sc7
Item: 260895
Model: 1323305
No reviews yet
Price is $42.89
Unit of measure 25/Pack
Free delivery by Mon, Apr 28
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Over 30
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 $93.89
Unit of measure 250/Pack
Free delivery by Thu, May 01
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Over 30
LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Sunflower Yellow, 500/BX~#|#~m000081284_sc7
Item: 386917
Model: EX7716-12-500
No reviews yet
Price is $204.19
Unit of measure 500/Box
Free delivery by Thu, May 01
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Over 30
JAM Paper Self Seal Policy Envelope 4 1/8" x 9 1/2", Natural Linen, 50/Pack (7716-NLI-50)~#|#~FC7B9E63-6939-4320-9110C68A66F9926D_sc7JAM Paper Self Seal Policy Envelope 4 1/8" x 9 1/2", Natural Linen, 50/Pack (7716-NLI-50)~#|#~5EA03894-4924-41B6-A88F8C44718A3AC0_sc7
Item: 24604592
Model: 7716-NLI-50
No reviews yet
Price is $13.95
Unit of measure 50/Pack
Delivery by Mon, Apr 28
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Over 30
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 $37.19
Unit of measure 50/Pack
Free delivery by Thu, May 01
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Over 30
JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Orange Recycled, Bulk 500/Box (15887H)~#|#~m003904556_sc7JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Orange Recycled, Bulk 500/Box (15887H)~#|#~m003904555_sc7
Item: 1589644
Model: 15887H
No reviews yet
Price is $202.99
Unit of measure 500/Box
Free delivery by Mon, Apr 28
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Over 30
LUX 60lbs. 4 1/8" x 9 1/2" #10 Regular Envelopes, Blue Parchment, 250/Box (6660-12-250)~#|#~m000081289_sc7
Item: 385529
Model: 6660-12-250
No reviews yet
Price is $89.29
Unit of measure 250/Box
Free delivery by Thu, May 01
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Over 30
LUX 60lbs. 4 1/8" x 9 1/2" #10 Regular Envelopes, Blue Parchment, 500/BX~#|#~m000081289_sc7
Item: 385531
Model: 6660-12-500
No reviews yet
Price is $99.69
Unit of measure 500/Box
Free delivery by Thu, May 01
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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 $61.19
Unit of measure 50/Pack
Free delivery by Thu, May 01
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Presidential Blue, 25/Pack (263912999)~#|#~sp137085032_sc7
Item: 261135
Model: 263912999
Price is $14.49
Unit of measure 25/Pack
Delivery by Mon, Apr 28
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JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Navy Blue, 50/Pack (LEBA317I)~#|#~m003905148_sc7JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Navy Blue, 50/Pack (LEBA317I)~#|#~m003905147_sc7
Item: 1588600
Model: LEBA317I
No reviews yet
Price is $22.99
Unit of measure 50/Pack
Delivery by Mon, Apr 28
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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.