Letter Envelopes

LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes W/Glue, Avocado Green, 250/BX~#|#~m000081265_sc7
Item: 386993
Model: EX7716-27-250
No reviews yet
Price is $120.69
Unit of measure 250/Box
Free delivery by Wed, Jul 22
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LUX 70lb 4 1/8"x9 1/2" Open End #10 Envelopes, Natural, 500/BX~#|#~m000161321_sc7
Item: 516419
Model: 7716-N-500
No reviews yet
Price is $95.79
Free delivery by Wed, Jul 22
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Dark Red, 50/Pack (31511298I)~#|#~sp137085037_sc7
Item: 1588662
Model: 31511298I
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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JAM Paper Strathmore Open End #10 Business Envelope, 4 1/8" x 9 1/2", Bright White, 50/Pack (18506I)~#|#~m007063336_sc7JAM Paper Strathmore Open End #10 Business Envelope, 4 1/8" x 9 1/2", Bright White, 50/Pack (18506I)~#|#~m007063335_sc7
Item: 1588781
Model: 18506I
Price is $20.49
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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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 Wed, Jul 22
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LUX 70lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Bright White, 250/Box~#|#~m000211252_sc7
Item: 513631
Model: 4860-70W-250
No reviews yet
Price is $56.69
Free delivery by Wed, Jul 22
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JAM Paper Strathmore #10 Business Envelope, 4 1/8" x 9 1/2", Bright White Laid, 25/Pack (191166)~#|#~m002934323_sc7JAM Paper Strathmore #10 Business Envelope, 4 1/8" x 9 1/2", Bright White Laid, 25/Pack (191166)~#|#~m002934322_sc7
Item: 262487
Model: 191166
Price is $19.99
Unit of measure 25/Pack
Delivery by Wed, Jul 22
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LUX 4 1/8" x 9 1/2" #10 60lbs. Envelopes, White With Silver LUX Lining, 50/Pack~#|#~m000081264_sc7
Item: 281875
Model: FLWH4260-03-50
Price is $40.79
Unit of measure 50/Pack
Free delivery by Wed, Jul 22
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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
Item: 384587
Model: 4860-NPC-1000
No reviews yet
Price is $188.89
Unit of measure 1000/Box
Free delivery by Wed, Jul 22
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LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes W/Glue Closure, Copper Metallic~#|#~m004940418_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes W/Glue Closure, Copper Metallic~#|#~m005823905_sc7
Item: 281919
Model: 5360-11-50
No reviews yet
Price is $39.39
Unit of measure 50/Pack
Free delivery by Wed, Jul 22
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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 Wed, Jul 22
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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 $109.29
Unit of measure 500/Box
Free delivery by Wed, Jul 22
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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 Wed, Jul 22
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LUX 80lb 4 1/8"x9 1/2" Square Flap Metallic #10 Envelopes, Silver, 500/BX~#|#~m004940415_sc7LUX 80lb 4 1/8"x9 1/2" Square Flap Metallic #10 Envelopes, Silver, 500/BX~#|#~m005823916_sc7
Item: 516498
Model: 5360-06-500
No reviews yet
Price is $144.49
Free delivery by Wed, Jul 22
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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 Wed, Jul 22
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JAM Paper #10 Policy Metallic Envelopes, 4.125 x 9.5, Stardream Silver, Bulk 1000/Carton (900905922B)~#|#~m004672038_sc7JAM Paper #10 Policy Metallic Envelopes, 4.125 x 9.5, Stardream Silver, Bulk 1000/Carton (900905922B)~#|#~m004672037_sc7
Item: 262070
Model: 900905922B
No reviews yet
Price is $677.99
Unit of measure 1000/Carton
Free delivery by Wed, Jul 22
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes W/Glue, Baby Blue, 250/BX~#|#~m000081266_sc7
Item: 386927
Model: EX7716-13-250
No reviews yet
Price is $128.59
Unit of measure 250/Box
Free delivery by Wed, Jul 22
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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 $27.69
Unit of measure 25/Pack
Delivery by Wed, Jul 22
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JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Orange Recycled, Bulk 1000/Carton (15887B)~#|#~m003904556_sc7JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Orange Recycled, Bulk 1000/Carton (15887B)~#|#~m003904555_sc7
Item: 1589520
Model: 15887B
No reviews yet
Price is $362.99
Unit of measure 1000/Carton
Free delivery by Wed, Jul 22
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Anthracite Metallic Gray, 250/BX~#|#~m004940420_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Anthracite Metallic Gray, 250/BX~#|#~m005823900_sc7
Item: 385005
Model: 5360-15-250
No reviews yet
Price is $113.69
Unit of measure 250/Box
Free delivery by Wed, Jul 22
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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 Wed, Jul 22
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Quality Park Gummed Brightly Colored Business #10 Envelopes, 4 1/8" x 9 1/2", Red, 25/Pk~#|#~s0171214_sc7
Item: QUA11134
Model: QUA11134
Price is $8.31
Unit of measure Pack
Delivery by Wed, Jul 22
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LUX 4 1/8" x 9 1/2" #10 70lbs. Open End Envelopes, Ruby Red, 50/Pack~#|#~m000081281_sc7
Item: 281892
Model: EX7716-18-50
Price is $43.69
Unit of measure 50/Pack
Free delivery by Wed, Jul 22
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JAM Paper #10 Booklet Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Blue, 100/Pack (01327705B)~#|#~1F47D90D-83F9-4485-A854C52E72972771_sc7
Item: 260951
Model: 01327705B
No reviews yet
Price is $127.99
Unit of measure 100/Box
Free delivery by Wed, Jul 22
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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 Wed, Jul 22
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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 Wed, Jul 22
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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 Wed, Jul 22
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Navy Blue, 50/Pack (LEBA367I)~#|#~m003905150_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Navy Blue, 50/Pack (LEBA367I)~#|#~m003905149_sc7
Item: 1588601
Model: LEBA367I
Price is $20.49
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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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 Wed, Jul 22
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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 Wed, Jul 22
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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, Jul 22
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LUX 4 1/8" x 9 1/2" #10 70lbs. Square Flap Envelopes, Garnet Red, 50/Pack~#|#~m004940464_sc7LUX 4 1/8" x 9 1/2" #10 70lbs. Square Flap Envelopes, Garnet Red, 50/Pack~#|#~m005823909_sc7
Item: 281924
Model: EX4860-26-50
Price is $44.19
Unit of measure 50/Pack
Free delivery by Wed, Jul 22
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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
Price is $28.19
Unit of measure 50/Pack
Delivery by Wed, Jul 22
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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, Jul 22
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LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes W/Peel&Press, Navy Blue, 500/BX~#|#~m000161287_sc7
LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes W/Peel&Press, Navy Blue, 500/BX is Out of stock
Item: 517271
Model: LUX-4860-103500
No reviews yet
Price is $96.39
JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Yellow, 25/Pack (PACV356)~#|#~m002169008_sc7
JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Yellow, 25/Pack (PACV356) is Out of stock
Item: 262275
Model: PACV356
No reviews yet
Price is $25.49
Unit of measure 25/Pack
JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Blue, 50/Pack (900908732I)~#|#~m003905027_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Blue, 50/Pack (900908732I)~#|#~m003905026_sc7
JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Blue, 50/Pack (900908732I) is Out of stock
Item: 1588597
Model: 900908732I
Price is $20.49
Unit of measure 50/Pack
LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Limelight Green, 250/BX~#|#~m004940491_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Limelight Green, 250/BX~#|#~m005824012_sc7
LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Limelight Green, 250/BX is Out of stock
Item: 388477
Model: LUX-4860-101-25
No reviews yet
Price is $96.19
Unit of measure 250/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
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Price is $50.89
Unit of measure 50/Pack
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
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Price is $169.69
Unit of measure 1000/Box

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.