Letter Envelopes

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, Jun 08
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JAM Paper Moistenable Glue Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", 250/Pack (92021-250)~#|#~5592B14A-6CE5-44F4-800F2D1421AD3A2C_sc7
Item: 24560681
Model: 92021-250
No reviews yet
Price is $78.99
Unit of measure 250/Pack
Free delivery by Mon, Jun 08
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LUX Self Seal #10 Business Envelope, 4 1/2" x 9 1/2", Pastel Gray, 50/Pack (60190-50)~#|#~sp14807401_sc7
Item: 24260549
Model: 60190-50
No reviews yet
Price is $55.49
Unit of measure 50/Pack
Free delivery by Wed, Jun 10
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Navy Blue, 25/Pack (LEBA317)~#|#~m003905148_sc7JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Navy Blue, 25/Pack (LEBA317)~#|#~m003905147_sc7
Item: 261706
Model: LEBA317
Price is $14.89
Unit of measure 25/Pack
Delivery by Mon, Jun 08
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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 1000/Pack (43687-1M)~#|#~sp228873585_sc7JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 1000/Pack (43687-1M)~#|#~sp228873584_sc7
Item: 24578650
Model: 43687-1M
No reviews yet
Price is $82.09
Unit of measure 1000/Pack
Free delivery by Mon, Jun 08
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JAM Paper #10 Business Foil Envelopes with Peel & Seal Closure, 4 1/8" x 9 1/2", Silver, 25/Pack (1323306)~#|#~m004671920_sc7JAM Paper #10 Business Foil Envelopes with Peel & Seal Closure, 4 1/8" x 9 1/2", Silver, 25/Pack (1323306)~#|#~m004671919_sc7
Item: 260896
Model: 1323306
No reviews yet
Price is $41.89
Unit of measure 25/Pack
Free delivery by Mon, Jun 08
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LUX Moistenable Glue Security Tinted #10 Business Envelope, 4 1/8" x 9 1/2", White, 250/Pack (WS-2652-250)~#|#~m004064021_sc7
Item: 2147234
Model: WS-2652-250
No reviews yet
Price is $50.39
Unit of measure 250/Pack
Free delivery by Wed, Jun 10
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JAM Paper #10 Tyvek Business Envelope, 4 1/8" x 9 1/2", White, 25/Pack (2131077)~#|#~m004542908_sc7JAM Paper #10 Tyvek Business Envelope, 4 1/8" x 9 1/2", White, 25/Pack (2131077)~#|#~m004542907_sc7
Item: 2329379
Model: 2131077
Price is $15.89
Unit of measure 25/Pack
Delivery by Mon, Jun 08
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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 $20.49
Unit of measure 25/Pack
Delivery by Mon, Jun 08
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Dark Purple, 50/Pack (563912516I)~#|#~sp132864355_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Dark Purple, 50/Pack (563912516I)~#|#~sp132864354_sc7
Item: 1588603
Model: 563912516I
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Mon, Jun 08
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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 $38.19
Unit of measure 50/Pack
Free delivery by Wed, Jun 10
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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, Jun 10
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LUX Moistenable Glue #10 Business Envelope, 4 1/2" x 9 1/2", Grocery Bag Brown, 50/Pack (4260-GB-50)~#|#~sp12274947_sc7LUX Moistenable Glue #10 Business Envelope, 4 1/2" x 9 1/2", Grocery Bag Brown, 50/Pack (4260-GB-50)~#|#~sp14081665_sc7
Item: 24216108
Model: 4260-GB-50
No reviews yet
Price is $18.49
Unit of measure 50/Pack
Delivery by Wed, Jun 10
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LUX 4 1/8" x 9 1/2" #10 80lbs. Open End Envelopes, Navy Blue, 50/Pack~#|#~m000081279_sc7
Item: 281890
Model: LUX-7716-103-50
No reviews yet
Price is $29.19
Unit of measure 50/Pack
Delivery by Wed, Jun 10
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LUX 4 1/8" x 9 1/2" #10 70lbs. Open End Envelopes, Baby Blue, 50/Pack~#|#~m000081266_sc7
Item: 281877
Model: EX7716-13-50
No reviews yet
Price is $30.49
Unit of measure 50/Pack
Delivery by Wed, Jun 10
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LUX 13lbs. 4 1/8" x 9 1/2" #10 Regular Envelopes, Airmail, 250/BX~#|#~m000161316_sc7
Item: 385972
Model: 92908-250
No reviews yet
Price is $105.39
Unit of measure 250/Box
Free delivery by Wed, Jun 10
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LUX #10 Square Flap Envelopes (4 1/8 x 9 1/2) 50/Pack, White - 100% Recycled (4860-WPC-50)~#|#~sp14807406_sc7
Item: 24260847
Model: 4860-WPC-50
Price is $20.19
Unit of measure 50/Pack
Delivery by Wed, Jun 10
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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 $145.09
Unit of measure 500/Pack
Free delivery by Mon, Jun 08
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JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Blue Recycled, 25/Pack (15880)~#|#~m003904550_sc7JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Blue Recycled, 25/Pack (15880)~#|#~m003904549_sc7
Item: 263915
Model: 15880
No reviews yet
Price is $16.69
Unit of measure 25/Pack
Delivery by Mon, Jun 08
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, Midnight Black (LUX-4260-B-50)~#|#~sp12274947_sc7LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, Midnight Black (LUX-4260-B-50)~#|#~sp12275009_sc7
Item: 24161624
Model: LUX-4260-B-50
No reviews yet
Price is $24.89
Unit of measure 50/Pack
Delivery by Wed, Jun 10
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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, Jun 08
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JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 1000/Carton (3984B)~#|#~sp111772303_sc7JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 1000/Carton (3984B)~#|#~sp111772302_sc7
Item: 364375
Model: 3984B
Price is $155.89
Unit of measure 1000/Carton
Free delivery by Mon, Jun 08
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, Pastel Green (65896-50)~#|#~A226610A-D3C5-457D-9410B00C8E1245FD_sc7LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, Pastel Green (65896-50)~#|#~D5892A2B-5A35-4AA1-9227B5AF59B13B83_sc7
Item: 24260638
Model: 65896-50
No reviews yet
Price is $45.09
Unit of measure 50/Pack
Free delivery by Wed, Jun 10
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes W/Glue, Gold Metallic, 250/BX~#|#~m004940416_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes W/Glue, Gold Metallic, 250/BX~#|#~m005823910_sc7
Item: 384977
Model: 5360-07-250
Price is $79.79
Unit of measure 250/Box
Free delivery by Wed, Jun 10
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JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Blue, 25/Pack (PACV357)~#|#~m003905168_sc7JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Blue, 25/Pack (PACV357)~#|#~m003905167_sc7
Item: 262213
Model: PACV357
No reviews yet
Price is $22.69
Unit of measure 25/Pack
Delivery by Mon, Jun 08
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Quality Park Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 1000/Carton (QUA90020B)~#|#~sp40322437_sc7Quality Park Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 1000/Carton (QUA90020B)~#|#~sp40322435_sc7
Item: QUA90020B
Model: QUA90020B
Price is $90.19
Unit of measure 1000/Carton
Free delivery by Wed, Jun 03
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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 $27.95
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 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, Jun 08
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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 $31.19
Unit of measure 50/Pack
Delivery by Wed, Jun 10
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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 $166.09
Unit of measure 1000/Pack
Free delivery by Wed, Jun 10
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Gartner Studios School Day Icons #10 Document Envelope, 4 1/8" x 9 1/2", White, 20/Pack (52065)~#|#~35292576-3B52-4E69-85B3E320D92BBC25_sc7Gartner Studios School Day Icons #10 Document Envelope, 4 1/8" x 9 1/2", White, 20/Pack (52065)~#|#~ECDE19BA-7C43-499D-97EF5913AC036B30_sc7
Item: 24431599
Model: 52065
No reviews yet
Price is $12.49
Delivery by Tue, Jun 02
30-min pickup
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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 $58.49
Free delivery by Wed, Jun 10
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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 $75.09
Unit of measure 250/Box
Free delivery by Wed, Jun 10
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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Blue, 250/Pack (5360-13-250)~#|#~sp228873252_sc7
Item: 24578290
Model: 5360-13-250
No reviews yet
Price is $78.09
Unit of measure 250/Pack
Free delivery by Mon, Jun 08
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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 $21.09
Unit of measure 50/Pack
Delivery by Wed, Jun 10
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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 $155.59
Unit of measure 500/Box
Free delivery by Mon, Jun 08
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JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Dark Purple, 50/Pack (563912518I)~#|#~m003905003_sc7JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Dark Purple, 50/Pack (563912518I)~#|#~m003905002_sc7
Item: 1588602
Model: 563912518I
No reviews yet
Price is $26.09
Unit of measure 50/Pack
Delivery by Mon, Jun 08
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LUX 80lb 4 1/8"x9 1/2" Open End #10 Envelopes W/Peel&Press, White, 500/BX~#|#~m000211244_sc7
Item: 515049
Model: 7716-WPC-500
No reviews yet
Price is $95.29
Free delivery by Wed, Jun 10
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JAM Paper #10 Business Envelope 4 1/8" x 9 1/2", Dark Green, 25/Pack (21514959)~#|#~A39DBCEE-6D8E-406C-BAB9041C11DCCE40_sc7JAM Paper #10 Business Envelope 4 1/8" x 9 1/2", Dark Green, 25/Pack (21514959)~#|#~5A98AEEA-DBF2-495F-8F0DBF4444796919_sc7
JAM Paper #10 Business Envelope 4 1/8" x 9 1/2", Dark Green, 25/Pack (21514959) is Out of stock
Item: 2633063
Model: 21514959
Price is $18.89
Unit of measure 25/Pack
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

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.