Security Envelopes in Envelopes(256)
Aimoh Self-Seal #10 Security Envelopes, Windowless Mailing Envelopes, White, 4-1/8" x 9-1/2", 1200 Count $102.89

Aimoh Self-Seal #10 Security Envelopes, Windowless Mailing Envelopes, White, 4-1/8" x 9-1/2", 1200 Count
Next Day Labels Double Window Envelopes, 8-5/8" x 3-5/8", White, 500 Count $49.99

Next Day Labels Double Window Envelopes, 8-5/8" x 3-5/8", White, 500 Count
Aimoh Self-Seal #10 Security Envelopes, Windowless Mailing Envelopes, White, 4-1/8" x 9-1/2", 2500 Count $114.89

Aimoh Self-Seal #10 Security Envelopes, Windowless Mailing Envelopes, White, 4-1/8" x 9-1/2", 2500 Count
Aimoh Self-Seal Catalog Security Envelopes, Security-Tinted Mailing Envelopes, 9” x 12”, White, 250 Count $42.98

Aimoh Self-Seal Catalog Security Envelopes, Security-Tinted Mailing Envelopes, 9” x 12”, White, 250 Count
Overall pick PEN + GEAR #10 Privacy Tint Peel and Stick Envelopes, White, 4.13 in x 9.5 in, 40 Count $3.32 8.3 ¢/ea

PEN + GEAR #10 Privacy Tint Peel and Stick Envelopes, White, 4.13 in x 9.5 in, 40 Count
500+ bought since yesterday PEN + GEAR #10 Privacy Tint Gummed Envelopes, White, 4.13 in x 9.5 in, 40 Count $2.36 5.9 ¢/ea

PEN + GEAR #10 Privacy Tint Gummed Envelopes, White, 4.13 in x 9.5 in, 40 Count
100+ bought since yesterday PEN + GEAR #6 Privacy Tint Gummed Envelopes, White, 3.63 in x 6.5 in, 100 Count $2.62 2.6 ¢/ea

PEN + GEAR #6 Privacy Tint Gummed Envelopes, White, 3.63 in x 6.5 in, 100 Count
Best seller Mead #6 3/4 Security Envelopes, 3 5/8" x 6 1/2", White, 80 Count (75212) $6.18 7.7 ¢/ea

Mead #6 3/4 Security Envelopes, 3 5/8" x 6 1/2", White, 80 Count (75212)
100+ bought since yesterday PEN + GEAR #6 Privacy Tint Peel and Stick Envelopes, White, 3.63" x 6.5", 100 Count $4.56 4.6 ¢/ea

PEN + GEAR #6 Privacy Tint Peel and Stick Envelopes, White, 3.63" x 6.5", 100 Count
Best seller Mead 10 Security Envelopes 4 18 x 9 12 White 40 Count - Envelopes $4.19

Mead 10 Security Envelopes 4 18 x 9 12 White 40 Count - Envelopes
Aimoh #10 Double Window Security Envelopes, Security-Tinted Mailing Envelopes with Flip and Seal Closure, 500 Count $29.99

Aimoh #10 Double Window Security Envelopes, Security-Tinted Mailing Envelopes with Flip and Seal Closure, 500 Count
Aimoh Flip and Seal #8 Security Envelopes for Business Checks, Double Window, White, 3 5/8” x 8 11/16”, 2500 Count $134.99

Aimoh Flip and Seal #8 Security Envelopes for Business Checks, Double Window, White, 3 5/8” x 8 11/16”, 2500 Count
Pen+Gear #10 Privacy Tint Peel & Stick Envelopes, White, 4.13" x 9.5", 250 Count $11.83 4.7 ¢/ea

Pen+Gear #10 Privacy Tint Peel & Stick Envelopes, White, 4.13" x 9.5", 250 Count
50+ bought since yesterday PEN + GEAR #10 Privacy Tint Gummed Envelopes, White, 4.13 in x 9.5 in, 150 Count $7.12 4.7 ¢/ea

PEN + GEAR #10 Privacy Tint Gummed Envelopes, White, 4.13 in x 9.5 in, 150 Count
Mead 80 Count, Size No. 8 6 3/4 White Security Paper Envelopes, 9.2 cm by 16.5 cm $6.19 Was $9.00

Mead 80 Count, Size No. 8 6 3/4 White Security Paper Envelopes, 9.2 cm by 16.5 cm
Aimoh Self-Seal #10 Security Envelopes, Windowless Mailing Envelopes, White, 4-1/8" x 9-1/2", 100 Count $10.00

Aimoh Self-Seal #10 Security Envelopes, Windowless Mailing Envelopes, White, 4-1/8" x 9-1/2", 100 Count
Best seller Mead #10 Envelopes, Security Printed Lining for Privacy, Press-It Seal-It Self Adhesive Closure, All-Purpose 20-lb Paper, 4-1/8" x 9-1/2", White, 45 per Box (75026) $7.40

Mead #10 Envelopes, Security Printed Lining for Privacy, Press-It Seal-It Self Adhesive Closure, All-Purpose 20-lb Paper, 4-1/8" x 9-1/2", White, 45 per Box (75026)
Mead Plain Envelopes Gummed No 6-3/4 100/BX White 75100 $5.28 $5.28/count

Mead Plain Envelopes Gummed No 6-3/4 100/BX White 75100
Best seller Mead Press-It Seal-It #6 3/4 Security Envelopes White #6 3/4 $7.13

Mead Press-It Seal-It #6 3/4 Security Envelopes White #6 3/4
Best seller Mead Press-It Seal-It Security Envelopes, 4.125" x 9.5", White, 45 Count $6.49

Mead Press-It Seal-It Security Envelopes, 4.125" x 9.5", White, 45 Count
Aimoh Self-Seal Catalog Security Envelopes, Security-Tinted Mailing Envelopes, 10” x 13”, White, 300 Count $66.69

Aimoh Self-Seal Catalog Security Envelopes, Security-Tinted Mailing Envelopes, 10” x 13”, White, 300 Count
Aimoh Gummed #10 Security Envelopes, Single Left Window Envelopes, White, 4-1/8" x 9-1/2", 500-Count $25.49

Aimoh Gummed #10 Security Envelopes, Single Left Window Envelopes, White, 4-1/8" x 9-1/2", 500-Count
100 - Pack #10 Security Envelopes Self Seal Envelopes 4-1/8" x 9-1/2" $8.45

100 - Pack #10 Security Envelopes Self Seal Envelopes 4-1/8" x 9-1/2"
BAZIC Secure Regular Size Business Envelopes, Easy Close Peel Stick, Windowless, Sealed, 55-Count $8.99

BAZIC Secure Regular Size Business Envelopes, Easy Close Peel Stick, Windowless, Sealed, 55-Count
BAZIC Security Self Seal Envelope 4 1/8" x 9 1/2" #10 Tint Mailing Envelopes, 40-Count $7.92 Was $10.49

BAZIC Security Self Seal Envelope 4 1/8" x 9 1/2" #10 Tint Mailing Envelopes, 40-Count
Aimoh Self-Seal #6 3/4 Security Envelopes, Windowless Mailing Envelopes, White, 3- 5/8” x 6- 1/2”, 300 Count $17.99

Aimoh Self-Seal #6 3/4 Security Envelopes, Windowless Mailing Envelopes, White, 3- 5/8” x 6- 1/2”, 300 Count
4PK Mead White Security Envelopes Security - #6 3/4 - 6 1/2" Width x 3 5/8" Length - 20 lb - Gummed - Wove - 80 / Box - White $16.49

4PK Mead White Security Envelopes Security - #6 3/4 - 6 1/2" Width x 3 5/8" Length - 20 lb - Gummed - Wove - 80 / Box - White
Trianu #10 Security Self-Seal Tinted Envelopes for Privacy & Business, Peel and Seal, Windowless, 4-1/8 x 9-1/2 inches, 24 LB, 50 Pcs $19.99

Trianu #10 Security Self-Seal Tinted Envelopes for Privacy & Business, Peel and Seal, Windowless, 4-1/8 x 9-1/2 inches, 24 LB, 50 Pcs
Mead No. 10 Security Envelopes Business - #10 - 9 1/2" Width x 4 1/8" Length - 20 lb - Gummed - Wove - 40 / Box - White $7.49

Mead No. 10 Security Envelopes Business - #10 - 9 1/2" Width x 4 1/8" Length - 20 lb - Gummed - Wove - 40 / Box - White
Mead Press-It Seal-It Security Envelopes, 3.625in X 6.5in, #6.75, 55 Ct $7.22 $19.00/lb

Mead Press-It Seal-It Security Envelopes, 3.625in X 6.5in, #6.75, 55 Ct
Key Drop Envelopes 100 ct | Auto Repair Night Drop Key Envelopes | Automotive Shop Supplies for Car Service Mechanic $16.99

Key Drop Envelopes 100 ct | Auto Repair Night Drop Key Envelopes | Automotive Shop Supplies for Car Service Mechanic
500 - Pack #10 Security Envelopes Self Seal Envelopes 4-1/8" x 9-1/2" $18.95

500 - Pack #10 Security Envelopes Self Seal Envelopes 4-1/8" x 9-1/2"
Aimoh Gummed #10 Security Envelopes, Windowless Mailing Envelopes, White, 4-1/8" x 9-1/2", 500 Count $26.95

Aimoh Gummed #10 Security Envelopes, Windowless Mailing Envelopes, White, 4-1/8" x 9-1/2", 500 Count
Pen+Gear #10 Privacy Tint Gummed Envelopes, White, 4.13" x 9.5", 500 Count $17.14

Pen+Gear #10 Privacy Tint Gummed Envelopes, White, 4.13" x 9.5", 500 Count
Aimoh Self-Seal Catalog Security Envelopes, Security-Tinted Mailing Envelopes, 9” x 12”, White, 500 Count $79.98
Aimoh Self-Seal Catalog Security Envelopes, Security-Tinted Mailing Envelopes, 9” x 12”, White, 500 Count
Aimoh Self-Seal #10 Security Envelopes, Windowless Mailing Envelopes, White, 4-1/8" x 9-1/2", 500 Count $27.39 Was $39.99

Aimoh Self-Seal #10 Security Envelopes, Windowless Mailing Envelopes, White, 4-1/8" x 9-1/2", 500 Count
40 Peel Self Seal White Letter Mailing Envelopes N.10 Shipping 4-1/8 X 9-1/2 In $8.87

40 Peel Self Seal White Letter Mailing Envelopes N.10 Shipping 4-1/8 X 9-1/2 In
#10 Security Self-Seal Envelopes, 50 Count Windowless Business Mailing Envelopes, Security Tint Pattern for Secure Mailing, Invoices and Statements, Size 4-1/8 x 9-1/2 Inch $15.99

#10 Security Self-Seal Envelopes, 50 Count Windowless Business Mailing Envelopes, Security Tint Pattern for Secure Mailing, Invoices and Statements, Size 4-1/8 x 9-1/2 Inch
BAZIC Security Self Seal Envelope 4 1/8" x 9 1/2" #10 Tint Mailing Envelopes, 40-Count $8.99

BAZIC Security Self Seal Envelope 4 1/8" x 9 1/2" #10 Tint Mailing Envelopes, 40-Count
Pen+Gear #10 Privacy Tint Peel and Stick Envelopes, White, 4.13 in x 9.5 in, 500 Count $25.22

Pen+Gear #10 Privacy Tint Peel and Stick Envelopes, White, 4.13 in x 9.5 in, 500 Count
#9 Regular Envelopes (3 7/8 x 8 7/8) - Holiday Red (50 Qty.) $23.07 46.1 ¢/ea
#9 Regular Envelopes (3 7/8 x 8 7/8) - Holiday Red (50 Qty.)
Money Envelope 6.5" x 3.5", 200Pcs Cash Envelopes Money Holder Bags Budgeting Saving Challenge Letter for Gift Coins Checks Tickets Jewelry Passport Card, Light Green $27.99

Money Envelope 6.5" x 3.5", 200Pcs Cash Envelopes Money Holder Bags Budgeting Saving Challenge Letter for Gift Coins Checks Tickets Jewelry Passport Card, Light Green
Universal UNV36106 No.6 0.75 Business White Envelope $15.76

Universal UNV36106 No.6 0.75 Business White Envelope
Top Flight Number 10 Boxed Security Envelopes, Strip and Seal Closure, 4 1/8 x 9 1/2 Inches, White, 45 Envelopes per Box (6900120) $9.70 Was $11.91

Top Flight Number 10 Boxed Security Envelopes, Strip and Seal Closure, 4 1/8 x 9 1/2 Inches, White, 45 Envelopes per Box (6900120)
#10 Security Tinted Self-Seal Envelopes - No Window - EnveGuard, Size 4-1/8 X 9-1/2 Inches - White - 24 LB - 100 Count (34100) $10.00 Was $13.46

#10 Security Tinted Self-Seal Envelopes - No Window - EnveGuard, Size 4-1/8 X 9-1/2 Inches - White - 24 LB - 100 Count (34100)
Office Depot Clean Seal(TM) Security Window Envelopes, #10 (4 1/8in. x 9 1/2in.), White, Pack Of 250, 77292 $15.29

Office Depot Clean Seal(TM) Security Window Envelopes, #10 (4 1/8in. x 9 1/2in.), White, Pack Of 250, 77292
4Pack Mead White Security Envelopes (75212) $20.98

4Pack Mead White Security Envelopes (75212)
Office Depot Clean Seal(TM) Security Envelopes, #10 (4 1/8in. x 9 1/2in.), White, Box Of 250, 77148 $14.42 Was $17.06

Office Depot Clean Seal(TM) Security Envelopes, #10 (4 1/8in. x 9 1/2in.), White, Box Of 250, 77148
Aimoh Flip and Seal #8 Security Envelopes for Business Checks, Double Window, White, 3 5/8” x 8 11/16”, 2500 Count $134.99

Aimoh Flip and Seal #8 Security Envelopes for Business Checks, Double Window, White, 3 5/8” x 8 11/16”, 2500 Count
Popular in Security Envelopes in Envelopes - Walmart.com
FAQ
How do security envelopes protect my mail contents?
Security envelopes are designed with special features to help protect your mail's contents from being seen or tampered with during transit. They often include:
- Security tinting: A patterned interior that obscures the contents, preventing anyone from reading through the envelope.
- Opaque materials: Thicker paper or windowless designs that block visibility.
- Secure closures: Self-seal adhesive strips or gummed flaps that help prevent accidental opening.
These features work together to provide privacy and reduce the risk of sensitive information being exposed.
What sizes of security envelopes are best for mailing documents?
Choosing the right size of security envelope depends on the documents you plan to mail. Common sizes include:
- #10 envelopes (4 1/8" x 9 1/2"): Ideal for standard letter-sized papers folded into thirds, such as invoices or letters.
- #6 3/4 envelopes (3 5/8" x 6 1/2"): Suitable for smaller documents like checks or cards.
- Catalog envelopes (9" x 12"): Perfect for mailing unfolded documents, brochures, or catalogs.
Consider the size and thickness of your contents to select an envelope that fits securely without excessive empty space.
What are the benefits of self-seal versus gummed closures on security envelopes?
Security envelopes come with different closure types, mainly self-seal and gummed closures, each offering advantages:
- Self-seal closures: These have an adhesive strip covered by a peel-away liner, allowing quick and easy sealing without moisture. They're convenient and save time, especially for high-volume mailing.
- Gummed closures: Require moistening the adhesive flap to seal. They provide a traditional seal and can be more secure if properly moistened, but take a bit longer to use.
Your choice depends on your preference for convenience versus traditional sealing methods.
How can I address a security envelope for professional mailing?
When addressing a security envelope for professional use, keep these tips in mind:
- Use clear, legible handwriting or printed labels to ensure accurate delivery.
- Place the recipient's address in the center of the envelope front, and the return address in the upper left corner.
- If using window envelopes, make sure the address on your document aligns perfectly with the window for easy visibility.
- Include postage in the upper right corner as required by postal services.
Following these steps helps your mail look professional and reach its destination without delays.
What are some tips for securely sealing envelopes without licking them?
If you prefer not to lick envelopes to seal them, there are several easy alternatives that maintain security:
- Use self-adhesive or peel-and-seal envelopes: These come with a sticky strip covered by a liner that you peel off to seal quickly and cleanly.
- Apply double-sided tape or glue dots: These adhesives can reinforce the flap securely without moisture.
- Use a damp sponge or adhesive moisteners: For gummed envelopes, these tools help control moisture without direct contact.
These methods help keep your mail sealed securely and hygienically.























