Letter Envelopes

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, Jun 08
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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, Jun 08
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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, Jun 10
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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 Mon, Jun 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, Jun 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, Jun 08
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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
Item: 386315
Model: EX4860-10-250
No reviews yet
Price is $108.49
Unit of measure 250/Box
Free delivery by Wed, Jun 10
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LUX 70lb 4 1/8"x9 1/2" Sqaure Flap #10 Envelopes, Magenta Pink, 500/BX~#|#~m004940454_sc7LUX 70lb 4 1/8"x9 1/2" Sqaure Flap #10 Envelopes, Magenta Pink, 500/BX~#|#~m005823998_sc7
Item: 516416
Model: EX4860-10-500
Price is $93.09
Free delivery by Wed, Jun 10
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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 $214.59
Unit of measure 500/Box
Free delivery by Wed, Jun 10
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JAM Paper #10 Booklet Envelope, 4 1/8" x 9 1/2", Blue, 100/Pack (15861d)~#|#~05DEE4CF-C543-4869-8645BDAA8DAA7AAE_sc7JAM Paper #10 Booklet Envelope, 4 1/8" x 9 1/2", Blue, 100/Pack (15861d)~#|#~193F6945-35C5-4CB0-AB9DDE35D5470183_sc7
Item: 24604579
Model: 15861d
No reviews yet
Price is $27.99
Unit of measure 100/Pack
Delivery by Mon, Jun 08
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LUX 60lbs. 4 1/8" x 9 1/2" #10 Bright Regular Envelopes, Bright Green, 250/BX~#|#~m000081292_sc7
Item: 384425
Model: 4260-12-250
No reviews yet
Price is $50.39
Unit of measure 250/Box
Free delivery by Wed, Jun 10
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LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Bronze Metallic, 50/Pack~#|#~m004940419_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Bronze Metallic, 50/Pack~#|#~m005823903_sc7
Item: 281917
Model: 5360-12-50
No reviews yet
Price is $26.79
Unit of measure 50/Pack
Delivery by Wed, Jun 10
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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 Mon, Jun 08
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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 $170.39
Unit of measure 500/Box
Free delivery by Mon, Jun 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, Jun 08
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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, Jun 08
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 25/Pack (15847)~#|#~m003904529_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 25/Pack (15847)~#|#~m003904528_sc7
Item: 263898
Model: 15847
Price is $20.49
Unit of measure 25/Pack
Delivery by Mon, Jun 08
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Flame Metallic Orange, 500/BX~#|#~m004940426_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Flame Metallic Orange, 500/BX~#|#~m005823908_sc7
Item: 385039
Model: 5360-26-500
No reviews yet
Price is $146.09
Unit of measure 500/Box
Free delivery by Wed, Jun 10
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Avocado Green, 1000/BX~#|#~m000081265_sc7
Item: 386990
Model: EX7716-27-1000
No reviews yet
Price is $340.39
Unit of measure 1000/Box
Free delivery by Wed, Jun 10
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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 $66.29
Unit of measure 250/Box
Free delivery by Wed, Jun 10
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Wisteria Purple, 250/BX~#|#~m000081288_sc7
Item: 388708
Model: LUX-7716-106-25
No reviews yet
Price is $114.89
Unit of measure 250/Box
Free delivery by Wed, Jun 10
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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 $14.89
Unit of measure 25/Pack
Delivery by Mon, Jun 08
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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 Wed, Jun 03
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JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Blue, Bulk 500/Box (PACV357H)~#|#~m003905168_sc7JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Blue, Bulk 500/Box (PACV357H)~#|#~m003905167_sc7
Item: 1589618
Model: PACV357H
No reviews yet
Price is $377.99
Unit of measure 500/Box
Free delivery by Mon, Jun 08
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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, Jun 10
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LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Smoke Gray, 500/BX~#|#~m000161299_sc7
Item: 516408
Model: EX4860-22-500
Price is $139.29
Free delivery by Wed, Jun 10
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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, Jun 08
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LUX Self Seal #10 Business Envelope 4 1/8" x 9 1/2", Magenta, 50/Pack (EX4860-10-50)~#|#~sp14807459_sc7
Item: 24260628
Model: EX4860-10-50
No reviews yet
Price is $19.99
Unit of measure 50/Pack
Delivery by Wed, Jun 10
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JAM Paper #10 Policy Business Strathmore Envelopes, 4.125 x 9.5, Natural White Wove, 50/Pack (191249I)~#|#~m007063366_sc7JAM Paper #10 Policy Business Strathmore Envelopes, 4.125 x 9.5, Natural White Wove, 50/Pack (191249I)~#|#~m007063365_sc7
Item: 1588541
Model: 191249I
No reviews yet
Price is $26.09
Unit of measure 50/Pack
Delivery by Mon, Jun 08
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JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Orange Recycled, 50/Pack (15887I)~#|#~m003904556_sc7JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Orange Recycled, 50/Pack (15887I)~#|#~m003904555_sc7
Item: 1588703
Model: 15887I
No reviews yet
Price is $26.09
Unit of measure 50/Pack
Delivery by Mon, Jun 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, Jun 10
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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, Jun 10
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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, Jun 10
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Black, 25/Pack (2112730)~#|#~sp4800439_sc7
Item: 2633155
Model: 2112730
No reviews yet
Price is $19.49
Unit of measure 25/Pack
Delivery by Mon, Jun 08
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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
LUX 4 1/8" x 9 1/2" #10 70lbs. Square Flap Envelopes, Garnet Red, 50/Pack is Out of stock
Item: 281924
Model: EX4860-26-50
Price is $44.19
Unit of measure 50/Pack
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
JAM Paper Strathmore Open End #10 Business Envelope, 4 1/8" x 9 1/2", Ivory Wove, 500/Pack (191165H)~#|#~sp132864530_sc7JAM Paper Strathmore Open End #10 Business Envelope, 4 1/8" x 9 1/2", Ivory Wove, 500/Pack (191165H)~#|#~sp132864529_sc7
JAM Paper Strathmore Open End #10 Business Envelope, 4 1/8" x 9 1/2", Ivory Wove, 500/Pack (191165H) is Out of stock
Item: 1589693
Model: 191165H
No reviews yet
Price is $169.19
Unit of measure 500/Box
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
JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Green, 50/Pack (21514959I)~#|#~A674BC30-B71C-46BF-9F820C4A9D1CB744_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Green, 50/Pack (21514959I)~#|#~7B341DCC-3850-41A6-9A3D4193869C758E_sc7
JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Green, 50/Pack (21514959I) is Out of stock
Item: 2633062
Model: 21514959I
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Price is $29.99
Unit of measure 50/Pack
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
LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Candy Pink, 500/BX is Out of stock
Item: 386325
Model: EX4860-14-500
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Price is $142.49
Unit of measure 500/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.