Letter Envelopes

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, Apr 06
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Bright White, 250/BX (7535-250)~#|#~3D34267C-75F0-457C-80AB5323FB7BACCA_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Bright White, 250/BX (7535-250)~#|#~10DD16FF-8B98-4CDE-9CF274CB0D678FBC_sc7
Item: 385673
Model: 7535-250
No reviews yet
Price is $149.59
Unit of measure 250/Box
Free delivery by Wed, Apr 08
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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 06
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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, Apr 08
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LUX 80lb 4 1/8"x9 1/2" Open End #10 Envelopes W/Peel&Press, White, 1000/BX~#|#~m000211244_sc7
Item: 515066
Model: 7716-WPC-1000
No reviews yet
Price is $220.19
Free delivery by Wed, Apr 08
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Red, 50/Pack (67161I)~#|#~sp112110506_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Red, 50/Pack (67161I)~#|#~sp112110505_sc7
Item: 1588624
Model: 67161I
Price is $16.99
Unit of measure 50/Pack
Delivery by Mon, Apr 06
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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 $14.89
Unit of measure 25/Pack
Delivery by Mon, Apr 06
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Navy Blue, 250/BX~#|#~m000161287_sc7
Item: 388493
Model: LUX-4860-103-25
No reviews yet
Price is $58.49
Unit of measure 250/Box
Free delivery by Wed, Apr 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, Apr 08
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Candy Pink, 500/BX~#|#~m004940458_sc7LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Candy Pink, 500/BX~#|#~m005824001_sc7
Item: 386325
Model: EX4860-14-500
No reviews yet
Price is $142.49
Unit of measure 500/Box
Free delivery by Wed, Apr 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, Apr 08
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JAM Paper Kraft Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Brown Kraft Paper Bag, 500/Pack (6314842H)~#|#~sp74308924_sc7JAM Paper Kraft Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Brown Kraft Paper Bag, 500/Pack (6314842H)~#|#~sp74308921_sc7
Item: 1589710
Model: 6314842H
No reviews yet
Price is $189.49
Unit of measure 500/Box
Free delivery by Mon, Apr 06
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Grey, 25/Pack (36396438)~#|#~m004671977_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Grey, 25/Pack (36396438)~#|#~m004671976_sc7
Item: 261457
Model: 36396438
No reviews yet
Price is $19.49
Unit of measure 25/Pack
Delivery by Mon, Apr 06
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JAM Paper #10 Business Colored Envelopes, 4 1/8" x 9 1/2", Orange Recycled, Bulk 500/Box (15860H)~#|#~sp112110495_sc7JAM Paper #10 Business Colored Envelopes, 4 1/8" x 9 1/2", Orange Recycled, Bulk 500/Box (15860H)~#|#~sp112110494_sc7
Item: 1589645
Model: 15860H
Price is $144.49
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, Navy Blue, Bulk 500/Box (LEBA367H)~#|#~m003905150_sc7JAM Paper #10 Business Envelopes, 4.125 x 9.5, Navy Blue, Bulk 500/Box (LEBA367H)~#|#~m003905149_sc7
Item: 1589703
Model: LEBA367H
No reviews yet
Price is $122.99
Unit of measure 500/Box
Free delivery by Mon, Apr 06
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JAM Paper Strathmore Open End #10 Business Envelope, 4 1/8" x 9 1/2", Bright White Wove, 50/Pack (64933I)~#|#~sp112110502_sc7JAM Paper Strathmore Open End #10 Business Envelope, 4 1/8" x 9 1/2", Bright White Wove, 50/Pack (64933I)~#|#~sp112110501_sc7
Item: 1588544
Model: 64933I
No reviews yet
Price is $19.69
Unit of measure 50/Pack
Delivery by Mon, Apr 06
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Dark Grey, 50/Pack (36396438I)~#|#~m004671977_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Dark Grey, 50/Pack (36396438I)~#|#~m004671976_sc7
Item: 1588658
Model: 36396438I
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Mon, Apr 06
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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 Mon, Apr 06
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LUX #10 Square Flap Invitation Envelopes (4 1/8 x 9 1/2) 50/Pack, Pool (LUX-4860-102-50)~#|#~sp14807463_sc7
Item: 24260625
Model: LUX-4860-102-50
No reviews yet
Price is $25.19
Unit of measure 50/Pack
Delivery by Wed, Apr 08
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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 $110.29
Free delivery by Wed, Apr 08
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JAM Paper #10 Business Colored Envelopes, 4.125 x 9.5, Violet Purple Recycled, Bulk 500/Box (15864H)~#|#~sp112110499_sc7JAM Paper #10 Business Colored Envelopes, 4.125 x 9.5, Violet Purple Recycled, Bulk 500/Box (15864H)~#|#~sp112110498_sc7
Item: 1589718
Model: 15864H
No reviews yet
Price is $155.59
Unit of measure 500/Box
Free delivery by Mon, Apr 06
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LUX #10 Square Flap Envelopes (4 1/8 x 9 1/2) 50/Pack, Midnight Black (F-4560-B-50)~#|#~sp14807461_sc7
Item: 24260629
Model: F-4560-B-50
Price is $12.69
Unit of measure 50/Pack
Delivery by Wed, Apr 08
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LUX 4 1/8" x 9 1/2" #10 70lbs. Open End Envelopes, Smoke Gray, 50/Pack~#|#~m000081283_sc7
Item: 281894
Model: EX7716-22-50
No reviews yet
Price is $30.49
Unit of measure 50/Pack
Delivery by Wed, Apr 08
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Vista Metallic Blue, 500/BX~#|#~m000081324_sc7
Item: 385050
Model: 5360-29-500
No reviews yet
Price is $179.49
Unit of measure 500/Box
Free delivery by Wed, Apr 08
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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 06
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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 Mon, Apr 06
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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 06
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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 06
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JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Blush Pink, 250 Pack (4860-114-250)~#|#~sp226423804_sc7JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Blush Pink, 250 Pack (4860-114-250)~#|#~sp226423803_sc7
Item: 24578397
Model: 4860-114-250
No reviews yet
Price is $43.09
Unit of measure 250/Pack
Free delivery by Mon, Apr 06
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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, Apr 08
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JAM Paper #10 Business Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Red, 25/Pack (1323307)~#|#~m000067476_sc7
Item: 260897
Model: 1323307
No reviews yet
Price is $41.89
Unit of measure 25/Pack
Free delivery by Mon, Apr 06
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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 Mon, Apr 06
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LUX 4 1/8" x 9 1/2" #10 80lbs. Open End Envelopes, Seafoam Blue, 50/Pack~#|#~m000081282_sc7
Item: 281893
Model: LUX-7716-113-50
Price is $30.49
Unit of measure 50/Pack
Delivery by Wed, Apr 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, Apr 06
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes W/Glue, Smoke Gray, 250/BX~#|#~m000081283_sc7
Item: 386958
Model: EX7716-22-250
No reviews yet
Price is $118.89
Unit of measure 250/Box
Free delivery by Wed, Apr 08
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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
JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Black Linen, 25/Pack (V01218) is Out of stock
Item: 261584
Model: V01218
Price is $12.99
Unit of measure 25/Pack
LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Natural, 500/BX~#|#~m000161374_sc7
LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Natural, 500/BX is Out of stock
Item: 513623
Model: 4860-NPC-500
No reviews yet
Price is $89.59
Unit of measure 500/Box
LUX 4 1/8" x 9 1/2" #10 60lbs. Parchment Regular Envelopes, Blue, 50/Pack~#|#~m000081289_sc7
LUX 4 1/8" x 9 1/2" #10 60lbs. Parchment Regular Envelopes, Blue, 50/Pack is Out of stock
Item: 281900
Model: 6660-12-50
Price is $15.09
Unit of measure 50/Pack
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
JAM Paper Strathmore #10 Business Envelope, 4 1/8" x 9 1/2", Ivory Wove, 25/Pack (191165) is Out of stock
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Model: 191165
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Unit of measure 25/Pack
JAM Paper #10 Business Envelopes, 4 1/8" x 9 1/2", Ultra Fuchsia Pink, 100/Pack (15847d)~#|#~BE03D4BA-C047-4B00-99FC1BBF5E990CA7_sc7JAM Paper #10 Business Envelopes, 4 1/8" x 9 1/2", Ultra Fuchsia Pink, 100/Pack (15847d)~#|#~D119CDB6-5AB4-4271-857FDF38D0025578_sc7
JAM Paper #10 Business Envelopes, 4 1/8" x 9 1/2", Ultra Fuchsia Pink, 100/Pack (15847d) is Out of stock
Item: 24604531
Model: 15847d
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Price is $27.99
Unit of measure 100/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.