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Letter Envelopes

Neenah Paper #10 Business Envelope, 4 1/8" x 9 1/2", Classic tural White, 500/Box (NEE2803300)~#|#~m002294530_sc7
Item: 2622244
Model: NEE2803300
No reviews yet
Price is $117.29
Unit of measure 500/Box
Free delivery by Fri, Oct 10
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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 Mon, Oct 20
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JAM Paper #10 Booklet Envelope 4 1/8" x 9 1/2", Pastel Canary Yellow, 50/Pack (65912-50)~#|#~D0302FE4-E265-4424-92F4B2A1090EAEC7_sc7JAM Paper #10 Booklet Envelope 4 1/8" x 9 1/2", Pastel Canary Yellow, 50/Pack (65912-50)~#|#~F147BAE3-1287-42F8-998A8BC707B3499D_sc7
Item: 24604563
Model: 65912-50
No reviews yet
Price is $14.95
Unit of measure 50/Pack
Delivery by Thu, Oct 16
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Lime Green, 25/Pack (71091)~#|#~m003904620_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Lime Green, 25/Pack (71091)~#|#~m003904619_sc7
Item: 261157
Model: 71091
Price is $10.29
Unit of measure 25/Pack
Delivery by Thu, Oct 16
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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 $102.79
Unit of measure 250/Box
Free delivery by Mon, Oct 20
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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
Item: 262564
Model: 191165
Price is $20.49
Unit of measure 25/Pack
Delivery by Thu, Oct 16
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, Mandarin (LUX-4260-11-50)~#|#~sp12274947_sc7LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 50/Pack, Mandarin (LUX-4260-11-50)~#|#~sp12275002_sc7
Item: 24162073
Model: LUX-4260-11-50
Price is $22.79
Unit of measure 50/Pack
Delivery by Mon, Oct 20
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Baby Pink, 25/Pack (2155777)~#|#~m002934212_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Baby Pink, 25/Pack (2155777)~#|#~m002934211_sc7
Item: 261385
Model: 2155777
Price is $20.49
Unit of measure 25/Pack
Delivery by Thu, Oct 16
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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 Thu, Oct 16
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JAM Paper #10 Self Seal Policy Envelopes, 4 1/8" x 9 1/2", Strathmore White, 50/Pack (7716-WLI-50)~#|#~6E821E8F-5177-4680-BAA135A9177556E2_sc7JAM Paper #10 Self Seal Policy Envelopes, 4 1/8" x 9 1/2", Strathmore White, 50/Pack (7716-WLI-50)~#|#~E455C262-24B6-42A8-BC866CFE5F843B19_sc7
Item: 24604525
Model: 7716-WLI-50
No reviews yet
Price is $13.95
Unit of measure 50/Pack
Delivery by Thu, Oct 16
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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 Thu, Oct 16
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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 1000/Pack (75746-1M)~#|#~sp228873583_sc7JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 1000/Pack (75746-1M)~#|#~sp228873582_sc7
Item: 24578649
Model: 75746-1M
No reviews yet
Price is $142.89
Unit of measure 1000/Pack
Free delivery by Thu, Oct 16
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LUX 70lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Grocery Bag Brown, 500/BX~#|#~m004940396_sc7LUX 70lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Grocery Bag Brown, 500/BX~#|#~m005823987_sc7
Item: 516499
Model: 4860-GB-500
No reviews yet
Price is $111.19
Free delivery by Mon, Oct 20
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JAM Paper Peel & Seal #10 Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 500/Pack (11789H)~#|#~sp36388124_sc7JAM Paper Peel & Seal #10 Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 500/Pack (11789H)~#|#~sp36388044_sc7
Item: 1589659
Model: 11789H
No reviews yet
Price is $155.59
Unit of measure 500/Box
Free delivery by Thu, Oct 16
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JAM Paper Open End #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 50/Pack (6314842I)~#|#~sp74308924_sc7JAM Paper Open End #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 50/Pack (6314842I)~#|#~sp74308921_sc7
Item: 1588608
Model: 6314842I
Price is $24.49
Unit of measure 50/Pack
Delivery by Thu, Oct 16
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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
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Thu, Oct 16
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Yellow, 50/Pack (15859I)~#|#~sp111772364_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Yellow, 50/Pack (15859I)~#|#~sp111772363_sc7
Item: 1588621
Model: 15859I
Price is $17.09
Unit of measure 50/Pack
Delivery by Thu, Oct 16
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Violet Purple, 50/Pack (15864I)~#|#~sp112110499_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Violet Purple, 50/Pack (15864I)~#|#~sp112110498_sc7
Item: 1590445
Model: 15864I
Price is $20.49
Unit of measure 50/Pack
Delivery by Thu, Oct 16
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LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 500/Pack, Sunflower (LUX-4260-12-500)~#|#~sp12274947_sc7LUX #10 Regular Envelopes (4 1/8 x 9 1/2) 500/Pack, Sunflower (LUX-4260-12-500)~#|#~sp12275007_sc7
Item: 24162059
Model: LUX-4260-12-500
No reviews yet
Price is $162.09
Unit of measure 500/Pack
Free delivery by Mon, Oct 20
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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 250/Pack (75746-250)~#|#~sp228873484_sc7JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 250/Pack (75746-250)~#|#~sp228873483_sc7
Item: 24578367
Model: 75746-250
No reviews yet
Price is $70.79
Unit of measure 250/Pack
Free delivery by Thu, Oct 16
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Great Papers! Peppermint and Candy Cane Party Holiday #10 Invitation Envelope, 9.5" x 4.125", 40/Pack (2025041)~#|#~03CA3256-FDC2-4268-A2E964281E557A0B_sc7Great Papers! Peppermint and Candy Cane Party Holiday #10 Invitation Envelope, 9.5" x 4.125", 40/Pack (2025041)~#|#~41AA744D-D89D-4FB5-A50C17E7727BB532_sc7
Great Papers! Peppermint and Candy Cane Party Holiday #10 Invitation Envelope, 9.5" x 4.125", 40/Pack (2025041) is New at Staples
Item: 24662407
Model: 2025041
No reviews yet
Price is $12.99
Delivery by Tue, Oct 21
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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 $106.49
Unit of measure 250/Box
Free delivery by Mon, Oct 20
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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 $145.89
Unit of measure 250/Box
Free delivery by Mon, Oct 20
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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 Thu, Oct 16
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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.