10 Best close envelopes of 2026

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1

Splendoress
#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
Main highlights

High Quality and Bulk Pricing
24 lbs envelopes at a fraction of the price.

Ideal for Business Mailing
Perfect for secure and efficient business correspondence.

Most Praised Feature: Self-Seal Convenience
Customers love the easy peel-and-stick closure.
Key specs
- size:500 Count
- color:White Wove
- shape:Rectangular
- closure:Self-Seal
- number of items:500
9.9

Exceptional

Our Rating
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Value for Money

2

HERKKA
HERKKA #10 Security Self-Seal Envelopes, No.10 Windowless Bussiness Envelopes, Security Tinted with Printer Friendly Design - Size 4-1/8 x 9-1/2 Inch - White - 24 LB - 500 Pack
Main highlights

Secure Self-Seal Closure
Features a super strong self-seal strip for secure mailing.

Ideal for Business Mailings
Perfect for sending checks, invoices, and sensitive documents.

Praised Security Tint
Customers love the dark navy tint for its privacy protection.
9.6

Exceptional

Our Rating
3

Columbian
Columbian #10 Security Envelopes, 500/Box, No Window, 4-1/8 x 9-1/2 Inches, Release & Seal Self Seal, White (COLO151)
Main highlights

Self Seal Convenience
Simple peel and press closure for hassle-free sealing.

Ideal for Confidential Documents
Perfect for small businesses, offices, and schools needing privacy.

Highly Praised Security Tint
Customers appreciate the strong security tint for privacy.
Key specs
- size:One Size
- color:White
- shape:Rectangular
- closure:Self-Seal
- number of items:500
9.4

Excellent

Our Rating
4

Aimoh
Aimoh #10 Security Self Seal Envelopes – 100 Qty |No Window, EnveGuard, 4⅛ x 9½", White, 24 LB, 100 Count (34100)
Main highlights

Windowless Front Panel for Privacy
These envelopes feature a windowless front panel, providing enhanced privacy and flexibility for addressing.

Ideal for Secure Mailing
Perfect for mailing confidential documents, checks, invoices, and statements with confidence and peace of mind.

Highly Praised Quick-Seal Closure
Customers appreciate the strong and reliable self-seal adhesive strip, ensuring a secure seal without the need for moisteners, glues, or tapes.
Key specs
- size:100 Ct.
- color:White
- shape:Rectangular
- closure:Self-Seal
- number of items:100
9.3

Excellent

Our Rating

9.9
Attachment

9.7
Security

9.3
materials Quality
5

Top Flight

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

Excellent

Our Rating
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6

Splendoress
#10 Envelopes Letter Size Self Seal | 100 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
Main highlights

100 Number 10 Envelopes Pack
Perfect for small businesses, home offices, and everyday office supply usage. Features a self-stick adhesive strip and tinted security pattern.

Ideal for Secure Mailing
Windowless design with security tint-pattern ensures contents and sensitive information are protected, making it ideal for bill payments and confidential documents.

Strong Seal Praised by Customers
Customers frequently praise the strong and reliable self-stick adhesive strip, ensuring secure sealing and peace of mind.
9.1

Excellent

Our Rating

9.7
worth the money

9.3
Simple to use

8.9
materials Quality
7

Amazon Basics
Amazon Basics 10 Security-Tinted Self-Seal Business Letter Envelopes, Peel & Seal Adhesive Closure, White, 500-Pack
Main highlights

Peel and Seal Convenience
Includes 500 - 10 envelopes made of 24-pound white woven paper with a peel-and-seal closure, ensuring no moisture is needed for sealing.

Ideal for Secure Mailing
Perfect for sending checks, invoices, or other confidential documents due to the interior security tint that prevents visibility of contents.

Commonly Praised Feature
Customers appreciate the high quality and excellent adhesive closure, noting the envelopes' durability, security, and overall great value for the price.
Key specs
- size:Peel & Seal
- color:Tint
- shape:Rectangular
- closure:Self-Seal
- number of items:500
9.0

Excellent

Our Rating

9.9
worth the money

9.9
materials Quality

9.7
Security
8

Mead
Mead #10 Security Business Envelopes Letter Size 4-1/8" x 9-1/2" – Peel and Seal, Privacy Lined, No-Window, Press-It Seal-It Self-Adhesive for Home & Office Mailing, 45 Count (75026)
Main highlights

Self Adhesive Seal for Convenience
White envelopes with self-adhesive seal and security lining for privacy, measuring 4 1/8 inches x 9 1/2 inches. 45 envelopes per box.

Ideal for Secure Mailings
Perfect for mailing sensitive documents like checks, ensuring privacy and security with its security lining and adhesive seal.

Most Praised Feature - No Need to Lick
Customers appreciate the convenience of the self-adhesive seal, eliminating the need to lick the envelopes for sealing.
8.9

Very Good

Our Rating

9.9
Simple to use

9.7
Security

9.3
materials Quality
9

Mead
Mead #10 Envelopes, Letter Size, 4-1/8" x 9-1/2", Security Printed Lining for Privacy, Gummed Closure, Windowless, White All-Purpose for Home & Office Mail, 40 Count (75214)
Main highlights

Privacy Protection
Security lining maintains document confidentiality during mailing.

Ideal for Standard Mail
Perfect for mailing standard letter size documents efficiently.

Customer Favorite Feature
Customers appreciate the durable, high-quality paper and secure closure.
Key specs
- size:40/Box
- color:White
- shape:Rectangular
- closure:Gummed
- number of items:40
8.8

Very Good

Our Rating
10

Quality Park
Quality Park #6 3/4 Self-Seal Security Envelopes, Security Tint and Pattern, Redi-Strip Closure, 24-lb White Wove, 3-5/8 x 6-1/2, 100/Box (QUA10417)
Main highlights

Self-Stick Convenience
Quality Park 6 3/4 Security Envelopes offer a peel & stick closure for quick, hassle-free sealing, saving time on mailings.

Ideal for Secure Mailings
Perfect for sending financial documents, personal letters, and business correspondence, ensuring confidentiality with a security tint and pattern.

Praised for Thickness and Quality
Customers appreciate the thick, durable paper that prevents visibility of contents, providing added security and reliability.
Key specs
- size:3-5/8 x 6-1/2
- color:White
- shape:Rectangular
- closure:Self-Seal
- number of items:1
8.7

Very Good

Our Rating

9.9
Security

9.7
Simple to use

9.5
worth the money

10 Best close envelopes of 2026

1

#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

How do we rank?

How do we rank?

Analyzing top stores

2

HERKKA #10 Security Self-Seal Envelopes, No.10 Windowless Bussiness Envelopes, Security Tinted with Printer Friendly Design - Size 4-1/8 x 9-1/2 Inch - White - 24 LB - 500 Pack

3

Columbian #10 Security Envelopes, 500/Box, No Window, 4-1/8 x 9-1/2 Inches, Release & Seal Self Seal, White (COLO151)

4

Aimoh #10 Security Self Seal Envelopes – 100 Qty |No Window, EnveGuard, 4⅛ x 9½", White, 24 LB, 100 Count (34100)

9.9

9.7

9.3

5

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

6

#10 Envelopes Letter Size Self Seal | 100 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

9.7

9.3

8.9

7

Amazon Basics 10 Security-Tinted Self-Seal Business Letter Envelopes, Peel & Seal Adhesive Closure, White, 500-Pack

9.9

9.9

9.7

8

Mead #10 Security Business Envelopes Letter Size 4-1/8" x 9-1/2" – Peel and Seal, Privacy Lined, No-Window, Press-It Seal-It Self-Adhesive for Home & Office Mailing, 45 Count (75026)

9.9

9.7

9.3

9

Mead #10 Envelopes, Letter Size, 4-1/8" x 9-1/2", Security Printed Lining for Privacy, Gummed Closure, Windowless, White All-Purpose for Home & Office Mail, 40 Count (75214)

10

Quality Park #6 3/4 Self-Seal Security Envelopes, Security Tint and Pattern, Redi-Strip Closure, 24-lb White Wove, 3-5/8 x 6-1/2, 100/Box (QUA10417)

9.9

9.7

9.5

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