Sponsored Products
Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50312-CC)~#|#~s1223633_sc7Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50312-CC)~#|#~s1223639_sc7
13% off of Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50312-CC)
Item: 787385
Model: ST50312-CC
Price is $24.99Regular price was $28.79, You save 13%
Unit of measure 500/Box Price per unit $0.05/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (ST50308-CC)~#|#~04BF5D88-0DCB-4C46-8A97D67F61C726B8_sc7Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (ST50308-CC)~#|#~F7FF46B5-6BB8-466E-99786E7BF515AACC_sc7
Item: 394057
Model: ST50308-CC
Price is $10.49
Unit of measure 100/Box Price per unit $0.10/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50301-CC)~#|#~FB3B930A-0912-433C-8C98F4CBCC197392_sc7Staples #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50301-CC)~#|#~10537A48-505B-4914-BBD96AEB2E3575E9_sc7
Item: 187013
Model: ST50301-CC
Price is $20.99
Unit of measure 500/Box Price per unit $0.04/Envelope
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30-min pickup
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Mead Security Tinted #10 Business Envelopes, 4-1/8" x 9-1/2", White, 40/Pack (75214)~#|#~sp130849571_sc7Mead Security Tinted #10 Business Envelopes, 4-1/8" x 9-1/2", White, 40/Pack (75214)~#|#~sp130849569_sc7
Mead Security Tinted #10 Business Envelopes, 4-1/8" x 9-1/2", White, 40/Pack (75214) is Clearance
57% off of Mead Security Tinted #10 Business Envelopes, 4-1/8" x 9-1/2", White, 40/Pack (75214)
Item: 300053
Model: 75214
Price is $1.34, Regular price was $3.15, You save 57%
Unit of measure 40/Pack
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LUX Self Seal Security Tinted #10 Business Envelope, 4 1/2" x 9 1/2", White, 50/Pack (45146-50)~#|#~sp14807428_sc7
Item: 24261186
Model: 45146-50
Price is $17.09
Unit of measure 50/Pack
Delivery by Mon, Nov 10
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Staples Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50302-CC)~#|#~DA5D596D-5974-4D63-A0CB649D25EA95D4_sc7Staples Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50302-CC)~#|#~8A08070E-2CC5-4140-95320C7211E7CD89_sc7
Item: 200519
Model: ST50302-CC
Price is $28.19
Unit of measure 500/Box Price per unit $0.06/Envelope
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30-min pickup
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Mead Press It Seal It #10 Security Envelopes, 4 1/8" x 9 1/2", White, 45/Pack (MEA75026)~#|#~m007116469_sc7
Item: 2696277
Model: 75026
Price is $6.19
Unit of measure 45/Pack
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Staples EasyClose #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (50306)~#|#~s1223617_sc7Staples EasyClose #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (50306)~#|#~s1223598_sc7
Item: 381912
Model: ST50306-CC
Price is $32.19
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Mead Self Seal #10 Business Envelope 4 1/8" x 9 1/2", White, 50/Pack (75024)~#|#~BE447AF8-7086-425C-BD8A2CBB0ECB5441_sc7
Item: 24239449
Model: 75024
Price is $6.19
Unit of measure 50/Pack
Next-Day Delivery by tomorrow
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Staples QuickStrip EasyClose Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (ST50307-CC)~#|#~888BE6B1-31CD-47C0-A8C1657439776121_sc7Staples QuickStrip EasyClose Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (ST50307-CC)~#|#~DDE921C8-55FF-44C0-B2C5590B29C8AE44_sc7
Item: 394053
Model: ST50307-CC
Price is $11.49
Unit of measure 100/Box Price per unit $0.12/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples Premium Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", Ivory, 500/Box (918211/19420)~#|#~517B8DD0-01E3-41A2-BAA178C02B46F29A_sc7Staples Premium Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", Ivory, 500/Box (918211/19420)~#|#~F3E31A83-0C8D-4000-AD7AB8B4723E8F6D_sc7
Item: 918211
Model: ST918211-CC
Price is $39.69
Unit of measure 500/Box Price per unit $0.08/Envelope
Free Next-Day eligible by tomorrow
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Staples Self Seal Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST511289-CC)~#|#~C1DE4A05-5BF1-4CB6-AF706FC6A1C4D67B_sc7Staples Self Seal Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST511289-CC)~#|#~73F89DCA-30B6-46FA-B098CD35CE9CBEC8_sc7
Item: 511289
Model: ST511289-CC
Price is $30.99
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
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Staples QuickStrip EasyClose Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Assorted Colors, 50/Pack (ST23431-CC)~#|#~5C561CBB-1963-4D64-A85EEA57A8AF559B_sc7Staples QuickStrip EasyClose Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Assorted Colors, 50/Pack (ST23431-CC)~#|#~F7756BA6-CC51-48E2-AF9D153F6450886B_sc7
Item: 122725
Model: ST23431-CC
Price is $11.49
Unit of measure 50/Pack
Next-Day Delivery by tomorrow
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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 Mon, Nov 10
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Staples Brand Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (570240/99294)~#|#~1D22CEC3-EF53-4FB5-A5BA1C460E01583A_sc7Staples Brand Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (570240/99294)~#|#~1DDEEC0B-AA88-4AF4-80F52C96DE579C95_sc7
Item: 570240
Model: ST570240-CC
Price is $31.49
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
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JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 50/Pack (3984I)~#|#~sp111772303_sc7JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 50/Pack (3984I)~#|#~sp111772302_sc7
Item: 24295335
Model: 3984I
Price is $14.39
Unit of measure 50/Pack
Delivery by Wed, Nov 05
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LUX Square Flap Self Seal #10 Invitation Envelope, 4 1/2" x 9 1/2", Sunflower, 50/Pack (EX4860-12-50)~#|#~sp14807340_sc7
Item: 24261325
Model: EX4860-12-50
No reviews yet
Price is $22.69
Unit of measure 50/Pack
Delivery by Mon, Nov 10
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Mead #10 Business Envelopes, 4-1/8" x 9-1/2", White, 50/Pack (75050)~#|#~sp130850205_sc7Mead #10 Business Envelopes, 4-1/8" x 9-1/2", White, 50/Pack (75050)~#|#~sp130850204_sc7
Item: 294470
Model: 75050
Price is $5.19
Unit of measure 50/Pack
Next-Day Delivery by tomorrow
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Southworth Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", Natural, 250/Box (J404N-10)~#|#~s1175033_sc7Southworth Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", Natural, 250/Box (J404N-10)~#|#~s1174991_sc7
Item: 581511
Model: J404N-10
Price is $45.19
Unit of measure 250/Box
Free Next-Day eligible by tomorrow
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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 $76.19
Unit of measure 250/Pack
Free delivery by Wed, Nov 05
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Staples Tear-Resistant EasyClose Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (21573)~#|#~9D61BF36-F926-4189-B751F8BE3F66B083_sc7Staples Tear-Resistant EasyClose Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (21573)~#|#~B2C81072-7CD5-46C7-9F58781765042EC9_sc7
Item: 329841
Model: ST21573-CC
Price is $27.79
Unit of measure 100/Box Price per unit $0.28/Envelope
Next-Day Delivery by tomorrow
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Staples QuickStrip EasyClose #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (394047N)~#|#~874C076E-30E1-4019-BCAD79AF3EE8E1F6_sc7Staples QuickStrip EasyClose #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (394047N)~#|#~1ED15A4C-99F0-44F1-B454A42378FDEB93_sc7
Item: 394047
Model: ST394047N-CC
Price is $11.49
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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Staples Premium Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (19264VP)~#|#~E65CF8B4-3BE9-446A-BF728FF671907089_sc7Staples Premium Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (19264VP)~#|#~F348EB53-3B4F-481F-A4AD4778B99026D6_sc7
Item: 321554
Model: ST19264VP-CC
Price is $27.69
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
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Southworth Linen Business Envelope, #10, 24 lb., Ivory, 50/Pack (P564-10)~#|#~s1174972_sc7Southworth Linen Business Envelope, #10, 24 lb., Ivory, 50/Pack (P564-10)~#|#~s1174973_sc7
Item: 418665
Model: P564-10
Price is $29.99
Unit of measure 50/Pack
Delivery by Mon, Nov 10
30-min pickup
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Quality Park Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (QUA69122)~#|#~sp40322443_sc7Quality Park Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (QUA69122)~#|#~sp40322442_sc7
Item: 813442
Model: QUA69122
Price is $88.29
Unit of measure 500/Box Price per unit $0.18/Envelope
Free Next-Day eligible by tomorrow
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Southworth Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", White, 250/Box (J554-10)~#|#~s1174989_sc7Southworth Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", White, 250/Box (J554-10)~#|#~s1174988_sc7
Item: 719286
Model: J554-10
Price is $45.19
Unit of measure 250/Box
Free Next-Day eligible by tomorrow
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Southworth Cotton #10 Inter-Departmental Envelope 4 1/8" x 9 1/2", White, 50/Pack (R14-10L)~#|#~s1174945_sc7Southworth Cotton #10 Inter-Departmental Envelope 4 1/8" x 9 1/2", White, 50/Pack (R14-10L)~#|#~s1174943_sc7
Item: 619358
Model: R14-10L
Price is $20.99
Unit of measure 50/Pack
Next-Day Delivery by tomorrow
30-min pickup
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Trending now

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.