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10 Best business mailing envelopes of 2026

Save up to 39% off
  • Best Choice

    1

    500 No. 8 Flip and Seal Double Window Security Check Envelopes - Designed for Quickbooks Printed Checks - Number 8 Size 3 5/8 Inch x 8 11/16 Inch
    Blue Summit Supplies
    9.7
    Exceptional

    500 No. 8 Flip and Seal Double Window Security Check Envelopes - Designed for Quickbooks Printed Checks - Number 8 Size 3 5/8 Inch x 8 11/16 Inch

    • product dimensions: 8.68 x 3.58 x 0.04 inches
    • color: White
    • shape: Rectangular
    • item weight: 1 pounds
    • item model number: BSS-92588-012
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  • Value for Money

    2

    500 No. 10 Flip and Seal Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes -Number 10 Size 4 1/8 X 9 ½ Inch
    Blue Summit Supplies
    9.6
    Exceptional

    500 No. 10 Flip and Seal Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes -Number 10 Size 4 1/8 X 9 ½ Inch

  • 3

    Amazon Basics #10 Security-Tinted Self-Seal Business Envelopes for Documents, Privacy, Home & Office, White, 500-Pack
    Amazon Basics
    9.3
    Excellent

    Amazon Basics #10 Security-Tinted Self-Seal Business Envelopes for Documents, Privacy, Home & Office, White, 500-Pack

    • product dimensions: 12.2 x 9.9 x 4.13 inches
    • color: Tint
    • shape: Rectangular
    • item weight: 6.47 pounds
    • item model number: AMZP5

  • 4

    Top Flight PSTF10NWT #10 Envelopes, Strip & Seal, Security Tinted, White Paper, 24 lb, 500 Count
    Top Flight
    9.2
    Excellent

    Top Flight PSTF10NWT #10 Envelopes, Strip & Seal, Security Tinted, White Paper, 24 lb, 500 Count

    • product dimensions: 11.8 x 10 x 4.3 inches
    • color: White
    • shape: Rectangular
    • item weight: 6 pounds
    • item model number: PSTF10NWT

  • 5

    #10 Envelopes Letter Size Self Seal | 500 Business Mailing Security Peel and Sealing Envelope | 100% Tinted | no 10 White Windowless Legal Regular Plain Envelops Pack | 4-1/8 x 9-1/2 Inches | 24 LB
    Splendoress
    9.1
    Excellent

    #10 Envelopes Letter Size Self Seal | 500 Business Mailing Security Peel and Sealing Envelope | 100% Tinted | no 10 White Windowless Legal Regular Plain Envelops Pack | 4-1/8 x 9-1/2 Inches | 24 LB

    • product dimensions: 11.5 x 10 x 4.25 inches
    • color: White Wove
    • shape: Rectangular
    • item weight: 6.06 pounds
    • item model number: 10 Security Envelopes Windowless
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  • 6

    #8 Double Window Security Check Envelopes, No.8 Double Window Bussiness Envelopes Designed for QuickBooks Checks - Computer Printed Checks - 3 5/8 X 8 11/16 (NOT for INVOICES) - 24 LB - 500 PACK
    HERKKA
    8.8
    Very Good

    #8 Double Window Security Check Envelopes, No.8 Double Window Bussiness Envelopes Designed for QuickBooks Checks - Computer Printed Checks - 3 5/8 X 8 11/16 (NOT for INVOICES) - 24 LB - 500 PACK

    • product dimensions: 8.69 x 3.63 x 0.04 inches
    • color: Blue
    • shape: Rectangular
    • item weight: 5.59 pounds
    • item model number: No8-2Win-Lixing

  • 7

    Aimoh 500#10 Security Self Seal Envelopes, Windowless, Premium Security Tint Pattern, Ultra Strong Quick Seal Closure, EnveGuard, Size 4-1/8 x 9-1/2", White, 24LB, 500 Count(34010)
    Aimoh
    8.7
    Very Good

    Aimoh 500#10 Security Self Seal Envelopes, Windowless, Premium Security Tint Pattern, Ultra Strong Quick Seal Closure, EnveGuard, Size 4-1/8 x 9-1/2", White, 24LB, 500 Count(34010)

    • product dimensions: 11.5 x 10 x 4.25 inches
    • color: Self-Seal
    • shape: Rectangular
    • item weight: 6.85 pounds
    • item model number: 34010-500

  • 8

    Quality Park #10 Envelopes, Letter Size White Mailing Envelopes, 4-1/8x9-1/2 Inch, No Window Business Envelopes, Gummed Closure, 500/Box (QUA90020)
    Quality Park
    8.6
    Very Good

    Quality Park #10 Envelopes, Letter Size White Mailing Envelopes, 4-1/8x9-1/2 Inch, No Window Business Envelopes, Gummed Closure, 500/Box (QUA90020)

    39% Off
    • product dimensions: 4.25 x 9.63 x 4.25 inches
    • color: White
    • shape: Rectangular
    • item weight: 6.2 pounds
    • item model number: QUA90020

  • 9

    Amazon Basics #10 Security-Tinted Self-Seal Business Envelopes with Left Window for Invoices and Documents, White, 500-Pack
    Amazon Basics
    8.5
    Good

    Amazon Basics #10 Security-Tinted Self-Seal Business Envelopes with Left Window for Invoices and Documents, White, 500-Pack

    • product dimensions: 9.5 x 4.13 x 3.5 inches
    • color: Tint
    • shape: Rectangular
    • item weight: 6.34 pounds
    • item model number: AMZA26

  • 10

    Amazon Basics #10 Security Tinted Business Envelopes for Documents and Invoices, Quality Seal, 4-1/8" x 9-1/2", White, Pack of 500
    Amazon Basics
    8.4
    Good

    Amazon Basics #10 Security Tinted Business Envelopes for Documents and Invoices, Quality Seal, 4-1/8" x 9-1/2", White, Pack of 500

    • product dimensions: 9.5 x 4.13 x 0.01 inches
    • color: White
    • shape: Rectangular
    • item weight: 1.6 ounces
    • item model number: AMZSEC10

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