Letter Envelopes

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 $66.29
Unit of measure 250/Box
Free delivery by Wed, Apr 08
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LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes W/Glue Closure, Flame Metallic Orange~#|#~m004940426_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes W/Glue Closure, Flame Metallic Orange~#|#~m005823908_sc7
Item: 281923
Model: 5360-26-50
No reviews yet
Price is $42.69
Unit of measure 50/Pack
Free delivery by Wed, Apr 08
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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 Mon, Apr 06
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JAM Paper Peel & Seal #10 Business Envelope, 4 1/8" x 9 1/2", Christmas Green, 500/Pack (86555H)~#|#~6D72CF40-FFBC-49D2-943889305B5B19A6_sc7
Item: 1589639
Model: 86555H
No reviews yet
Price is $144.39
Unit of measure 500/Box
Free delivery by Mon, Apr 06
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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 Mon, Apr 06
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LUX #10 Square Flap Envelopes (4 1/8 x 9 1/2) 50/Pack, 70lb. Bright White (4860-70W-50)~#|#~sp14807393_sc7
Item: 24260394
Model: 4860-70W-50
No reviews yet
Price is $16.49
Unit of measure 50/Pack
Delivery by Wed, Apr 08
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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 Mon, Apr 06
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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 $48.69
Unit of measure 500/Box
Free delivery by Thu, Apr 02
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JAM Paper #10 Policy Metallic Envelopes, 4.125 x 9.5, Stardream Silver, Bulk 500/Box (900905922H)~#|#~m004672038_sc7JAM Paper #10 Policy Metallic Envelopes, 4.125 x 9.5, Stardream Silver, Bulk 500/Box (900905922H)~#|#~m004672037_sc7
Item: 1589766
Model: 900905922H
No reviews yet
Price is $377.99
Unit of measure 500/Box
Free delivery by Mon, Apr 06
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Baby Blue, 500/BX~#|#~m000081266_sc7
Item: 386933
Model: EX7716-13-500
No reviews yet
Price is $204.69
Unit of measure 500/Box
Free delivery by Wed, Apr 08
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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 Mon, Apr 06
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Dark Red, 500/Pack (31511298H)~#|#~m002168474_sc7
Item: 1589630
Model: 31511298H
No reviews yet
Price is $152.99
Unit of measure 500/Box
Free delivery by Mon, Apr 06
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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 Mon, Apr 06
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Quality Park Reveal-N-Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (QUA67218)~#|#~sp40319157_sc7
Item: QUA67218
Model: QUA67218
Price is $129.91
Unit of measure 500/Box
Free delivery by Fri, Apr 03
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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 Thu, Apr 02
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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 Mon, Apr 06
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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 Mon, Apr 06
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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 Mon, Apr 06
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JAM Paper #10 Policy Envelope, 4 1/8" x 9 1/2", Olive, 100/Pack (125137469D)~#|#~B2A94576-43ED-4865-914A39215629727A_sc7
Item: 24557925
Model: 125137469D
No reviews yet
Price is $48.59
Unit of measure 100/Pack
Free delivery by Mon, Apr 06
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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 Mon, Apr 06
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LUX 60lbs. 4 1/8" x 9 1/2" #10 Bright Regular Envelopes, Bright Green, 1000/BX~#|#~m000081292_sc7
Item: 384424
Model: 4260-12-1000
No reviews yet
Price is $150.89
Unit of measure 1000/Box
Free delivery by Wed, Apr 08
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JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Red Recycled, 25/Pack (25048)~#|#~m002934135_sc7JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Red Recycled, 25/Pack (25048)~#|#~m002934134_sc7
Item: 263863
Model: 25048
No reviews yet
Price is $14.89
Unit of measure 25/Pack
Delivery by Mon, Apr 06
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LUX 4 1/8" x 9 1/2" #10 80lbs. Open End Envelopes, Pool Blue, 50/Pack~#|#~m000081280_sc7
Item: 281891
Model: LUX-7716-102-50
Price is $55.09
Unit of measure 50/Pack
Free delivery by Wed, Apr 08
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LUX Moistenable Glue Security Tinted #10 Business Envelope, 4 1/2" x 9 1/2", Bright Green, 500/Box (4260-12-500)~#|#~m000081292_sc7
Item: 384428
Model: 4260-12-500
Price is $115.79
Unit of measure 500/Box
Free delivery by Wed, Apr 08
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JAM Paper Strathmore #10 Business Envelope, 4 1/8" x 9 1/2", Natural White, 25/Pack (191170)~#|#~03BFE419-087E-41F7-B4F6D36899F185ED_sc7JAM Paper Strathmore #10 Business Envelope, 4 1/8" x 9 1/2", Natural White, 25/Pack (191170)~#|#~02A23036-615A-4340-92838DA52A76DAD3_sc7
Item: 262515
Model: 191170
Price is $20.49
Unit of measure 25/Pack
Delivery by Mon, Apr 06
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LUX 80lb 4 1/8"x9 1/2" Open End #10 Envelopes, Wisteria Purple, 500/BX~#|#~m000081288_sc7
Item: 517171
Model: LUX-7716-106500
No reviews yet
Price is $201.99
Free delivery by Wed, Apr 08
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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, Apr 08
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LUX 4 1/8" x 9 1/2" #10 70lbs. Open End Envelopes, Avocado Green, 50/Pack~#|#~m000081265_sc7
Item: 281876
Model: EX7716-27-50
No reviews yet
Price is $52.99
Unit of measure 50/Pack
Free delivery by Wed, Apr 08
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JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Dark Gray, 50/Pack (36396445I)~#|#~m004671983_sc7JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Dark Gray, 50/Pack (36396445I)~#|#~m004671982_sc7
Item: 1588657
Model: 36396445I
No reviews yet
Price is $22.99
Unit of measure 50/Pack
Delivery by Mon, Apr 06
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LUX #10 Kraft Regular Envelopes (4 1/8 x 9 1/2) 250/Pack, 24lb. Brown Kraft (92031-250)~#|#~sp14807365_sc7
Item: 24260415
Model: 92031-250
No reviews yet
Price is $92.39
Unit of measure 250/Pack
Free delivery by Wed, Apr 08
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JAM Paper #10 Policy Business Envelopes, 4.125 x 9.5, Baby Blue, 50/Pack (3961300I)~#|#~m003904856_sc7JAM Paper #10 Policy Business Envelopes, 4.125 x 9.5, Baby Blue, 50/Pack (3961300I)~#|#~m003904855_sc7
Item: 1588674
Model: 3961300I
No reviews yet
Price is $22.99
Unit of measure 50/Pack
Delivery by Mon, Apr 06
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Business Envelopes W/Peel & Press, Magenta Pink, 250/BX~#|#~m004940454_sc7LUX 70lbs. 4 1/8" x 9 1/2" #10 Business Envelopes W/Peel & Press, Magenta Pink, 250/BX~#|#~m005823998_sc7
LUX 70lbs. 4 1/8" x 9 1/2" #10 Business Envelopes W/Peel & Press, Magenta Pink, 250/BX is Out of stock
Item: 386315
Model: EX4860-10-250
No reviews yet
Price is $108.49
Unit of measure 250/Box
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
JAM Paper #10 Business Colored Envelopes, 4.125 x 9.5, Ultra Fuchsia Pink, Bulk 500/Box (15847H) is Out of stock
Item: 1589650
Model: 15847H
No reviews yet
Price is $155.59
Unit of measure 500/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
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
No reviews yet
Price is $50.89
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
Bazic Kraft Self Seal Security Tinted #10 Business Envelope, 4 1/8" x 9 1/2", 500/Pack (BAZ5064)~#|#~sp151423994_sc7
Bazic Kraft Self Seal Security Tinted #10 Business Envelope, 4 1/8" x 9 1/2", 500/Pack (BAZ5064) is Out of stock
Item: 24516828
Model: BAZ5064
No reviews yet
Price is $43.09
Unit of measure 500/Pack
LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Natural, 1000/BX~#|#~m004940398_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Natural, 1000/BX~#|#~m005823989_sc7
LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Natural, 1000/BX is Out of stock
Item: 384587
Model: 4860-NPC-1000
No reviews yet
Price is $188.89
Unit of measure 1000/Box
Great Papers! Jolly Holly #10 Envelope, 4 1/8" x 9 1/2", Green, 40/Pack (2011611)~#|#~s0439871_sc7Great Papers! Jolly Holly #10 Envelope, 4 1/8" x 9 1/2", Green, 40/Pack (2011611)~#|#~s0440782_sc7
Great Papers! Jolly Holly #10 Envelope, 4 1/8" x 9 1/2", Green, 40/Pack (2011611) is Out of stock
Item: 401027
Model: 2011611
Price is $8.49
Unit of measure 40/Pack
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
JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Gold Yellow, 25/Pack (900906635) is Out of stock
Item: 261864
Model: 900906635
Price is $19.49
Unit of measure 25/Pack

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.