Best Office Express in 2026

A Quantity of 500 - 9 x 12 Booklet Envelope - 28# White

28# White Wove Paper - Regular Gummed Flap

Great for mailing Invoices, statements, catalogs or announcements.

✉️ 100 ENVELOPE PACK; these envelopes are manufactured with a WINDOW-LESS front panel for the perfect choice for small businesses, home offices and everyday use, #10 Security Envelopes are provided in a 100-envelope pack

✉️ SUPER SECURITY TINT PATTERN; #10 envelopes designed with a secure, security tint-pattern to protect contents and sensitive information, perfect for ultra-secure mailing

✉️ QUICK-SEAL CLOSURE; our #10 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, super secure seal across each envelope's width that won't easily open or tear, ideal for mailing for any letter sized and larger documents without splitting

10 business letter envelopes for home or office

Includes 500 - 10 envelopes made of 24-pound white woven paper; smooth surface works well for direct printing

Interior security tint for privacy; securely send checks, invoices, or other confidential documents

300-Pack of #6 envelopes with Peel & Seal closure—no moisture needed

Ideal for home or office; securely send checks, invoices, or other confidential documents

Interior security tint keeps content private

100-Pack of 9 x 12 inch catalog envelopes

Durable 28-pound brown kraft material provides privacy and strength

Easy-to-seal Peel and Seal closure—no moisture needed

#10 business letter envelopes for personal or professional use

Includes 500 #10 envelopes made of 24-pound standard white woven paper for quality and strength; no tint

Moisture activated gummed closure ensures a secure seal

#10 SECURITY TINTED SELF SEAL ENVELOPES; forget cheap envelopes that easily split and aren't suitable for secure mailing, our #10 envelopes are designed with a premium security tint to protect sensitive information and a super strong SELF-SEAL strip, perfect for larger documents

PREMIUM SECURITY TINTED PATTERN; our #10 envelopes are designed with a premium security printed design to protect contents and sensitive information, perfect for secure business and legal mailing while protecting sensitive information

WINDOWLESS DESIGN; envelopes ideal for standard business & legal documents and sensitive correspondence, manufactured with a windowless front panel for easy printing, labeling or hand-addressing, perfect for quick, mass business mailings

9X12 CATALOG ENVELOPES; Aimoh’s White 9x12 Security Envelopes combine a professional security tint pattern, large size for business documents and premium quality for the best 9x12 envelopes on the market

SECURITY TINT PATTERN; ideal for secure business mailing and sensitive correspondence, each 9x12 envelope contains a super secure, security tint pattern to protect contents, information and data when mailing

FOR 8.5X11 DOCUMENTS; large 9x12 size and strong QUICK-SEAL closure security tinted envelopes, perfect for photos, catalogs, thicker, larger documents and other business mailings

Clasp envelope (100-pack) for filing, storing, or mailing documents

Double-prong metal clasp closure and reinforced eyelet keep documents securely contained

Moisture-activated gummed surface on flap creates a permanent seal

Quality Park's 6 x 9 catalog envelopes are perfect for holding folded documents or smaller items. They are great for mailing, storage and organizing in both home and office environments.

Redi-Strip provides a clean, quick seal immediately upon contact. Simply peel off the adhesive strip and press to seal. The peel-off strip protects the adhesive from dust for a longer shelf life

Manufactured from heavyweight 28 lb. white wove stock to give contents extra protection during mailing, storage and handling

Color: Clear

Size: Letter (9.75 x 1.25 x 13 inches)

Quantity: 12 per pack

Quality Park 6x9 clasp envelopes are a staple of every office; a gummed flap and reusable clasp make them ideal for mailing and storage; 100 per box

Our yellow envelopes have durable 2 prong metal clasps and reinforced eyelets to let you access your files as needed; open, close, repeat

A deeply gummed envelope flap is laid thick with moisture-activated adhesive; creates a firm seal you can trust in the mail

9x12 KRAFT ENVELOPES; Aimoh’s Catalog Envelopes combine tough 28lb golden kraft paper stock, strong self-sealing SELF-SEAL Closure for the best catalog envelopes on the market, perfect for large documents and all business correspondence

DURABLE MULTI-PURPOSE; Ideal for mailing catalogues, magazines, documents, direct mail, promotional material, brochures and more, Aimoh’s Catalog Envelopes can be easily hand addressed or customized with business information

28LB STOCK; manufactured from tough, durable Construction like 28lb paper stock, the brown kraft material will insure privacy of the envelopes contents, the durable, woven paper extends the tampering resistance of this envelope, standing up to normal postal wear and tear without damage,

100-Pack of No.10-1/2 catalog envelopes

Durable 28-pound white woven paper for quality and strength

Easy-to-seal Peel and Seal closure—no moisture needed

HIGH QUALITY & BULK PRICING - 24lbs high quality envelopes at a fraction of the price

NO NEED TO LICK THE FLAP ANYMORE - Very convenient

SELF SEAL ENVELOPE- Just peel and stick 4 1/8 in. x 9 1/2 in size envelop

Invitation envelopes; ideal for mailing computer-generated wedding, birthday, or other special event invites

Includes 100 blank A9 envelopes made of 24-pound white woven paper for reliable strength

Holds folded 8-1/2 x 11 inch sheets of paper

SUPER STRONG CONSTRUCTION – Standard White Envelopes Are Crafted of Heavy, Durable 24lb Paper for Exceptional Rip, Tear & Puncture Resistance

BOOKLET ORIENTATION – Classic Open From side Style Enables Fast, Convenient Stuffing for Letter, Legal Document, Pamphlet, crafts, Coupons, Greeting Card, Christmas Cards, Wedding Invitations, hand made greeting cards, folded letters, CDs, Other Common Mailers

LETTER SIZE PRICING – Ideal 6” x 9” Size Offers Maximum Space Within USPS 1-Stamp Dimension Requirements; Buy Bulk & Save Big on Both Supplies & Shipping

500 standard-size security-tinted #9 double window envelopes

Ideal for 8.5-by-11-inch computer-generated invoices and statements

Double windows 3/8-inch from the left to show sender info (2 inches from bottom) and recipient info (1/2 inch from bottom)

Perfectly fits QuickBooks Laser Checks, or other computer printed checks: checks will slide in easier with a slightly wider design than the standard two window 8 5/8 envelope

Checks amounts and memos will not be visible: Only addresses will show through our unique 2 window design with no need to change QuickBooks, QB Online, or Quicken settings

Provides complete check security: your checks will be hidden with our security tint design

10 business letter envelopes with single left address window

Includes 500 10 envelopes made of 24-pound white woven paper for quality and strength

Interior security tint for privacy; securely send checks, invoices, or other confidential documents

9 x 12 BOOKLET ENVELOPE PACK – Business Envelopes Are Perfect for Mailing a Variety of Big Documents Including Booklets, Catalogs, Forms, Invoices & Cards Great envelopes for mailing tax returns

PEEL AND SEAL CONVENIENCE – Easy Close Design Features Durable No Lick Flap with Pre-Moistened Adhesive Strip & Removable Backing; Just Peel, Press & Send

HEAVY 28 LB PAPER STOCK – Prevents Rips, Tears, Weather & Travel Damage While Providing Thick, Durable Surface for Printed Return Address & Other Custom Detail

NO. 6 x 9 BOOKLET ENVELOPE PACK : 6” x 9” size business envelopes are perfect for mailing a variety of big documents including booklets, catalogs, forms, invoices & cards great envelopes for mailing tax returns ideal size for brochures, legal docs, wedding invitations & direct mailers offers maximum space within USPS 1-stamp dimension requirements; buy bulk & save big on both supplies & shipping.

DURABLE 24LB PAPER : These colored business envelopes are crafted from durable 24lb High quality Starburst paper. This makes them economical and durable.

BRIGHT COLOR : These brightly colored envelopes never fail to impress. Attractive and attention-grabbing, these multicolor envelopes are a popular choice for sending marketing mailers.

PERFECT SIZE ENVELOPES 6" x 9" business envelopes are ideal for mailing a wide variety of items,Sheets of papers folded , letters,wedding invitations, direct mail,greeting cards,Christmas cards, catalogs storing some small items, and more

SIMPLE TO USE Just peel off the business envelopes self seal backing and press down on the flap to use the 9" envelopes self seal adhesive 28Lb heavy paper

STOCK UP ON ENVELOPES AND SAVE This envelopes self seal QuickStrip seal pack includes 250 of the finest quality office envelopes for a great price

9 x 12 inch Full View window Photo Mailing envelope features a heavy moistenable glue flap.

Envelope has a nice Clear window measuring at centre 7 x 9 3/4 inches

Great to be used for Brochures , Photos , Certificates ,Catalogs ,Company Calendar,Company promotions, Headshots , pictures, and much more .

A Quantity of 500 - 9 x 12 Booklet Envelope - 28# White

28# White Wove Paper - Regular Gummed Flap

Great for mailing Invoices, statements, catalogs or announcements.

9 X 12 White Envelope

Booklet / Open Side Style

150 Envelopes per Box

Get a box of 100 Columbian 9 x 12 envelopes with SimplySafe tamper-evident pull strips and security tinted interiors for mailing sensitive oversized documents; easy peel off Release & Seal closure

Columbian 9 x 12 envelopes have a patented SimplySafe seal that will show signs of tampering, safeguarding against unauthorized opening

Security envelopes have a strong security tint pattern so you can't see what's inside; ideal for obscuring more sensitive information and protecting critical documents

Color: Teal Green

Size: Letter (9 1/2 x 1 1/4 x 11 1/2 inches)

Quantity: 12 per pack

Size: A7 size colorful envelope, made of 5 1/4" x 7 1/4" standard A7 size, with a square seal in the form of a glue booklet, made of high-quality paper, thick and durable, with excellent sealing performance. Your privacy will be well protected.

Design: This 5x7 colorful envelope is very suitable for 5x7 cards/photos. (Pink, light green, light blue, light purple, bright red, lake blue, yellow, orange, dark purple, green) These colorful envelopes are also very suitable for direct mail, letters, postcards, weddings, birthdays, baby showers, graduations.

Sealing: This is a huge time-saving card envelope, each envelope comes with a separate tape, just tear off the protective strip, press, and seal it. Easy to seal peeling and sealing and closing operations, this type of adhesive is ideal for commercial applications, wedding announcements, and mailing.

VERSATILE MINI ENVELOPE: If you’re looking for an envelope for coin collections, craft supplies, buttons, seeds, invitation inserts, and more, our #1 coin envelopes are a great option. They are designed to fit inside direct mail, letters, and even holiday gift boxes. Use these coin envelopes to hold stamps, party favors, small manufacturing parts/inventory items, business cards, gift cards, and other small items.

MOISTENABLE GLUE SEAL: These moistenable envelopes are perfect for any use. You can even use a moistener to moisten the glue — it’s a huge time-saver! Simply moisten the strip of glue, press, and seal. It couldn't be easier! This type of adhesive is great for, wedding announcement inserts, personal notes, and more.

PRINTABLE & CUSTOMIZABLE: If you want to customize or label your envelopes with zero hassle, you’re in luck! These envelopes are printer-friendly, so you can use your home laser or inkjet printer to address them. They are printable on both digital and offset commercial printers. No need to worry about smudging or jamming because these envelopes are made for compatibility with most printer models.