Best Envelopes Mailing Supplies of 2026

Last updated on 02/02/2026
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1
45 White Mailing Envelopes, 100 GSM Mixed Sized Self Seal Greeting Card Envelopes, Invitation Envelopes for Posting Mailing Home Office and Ecommerce(15 DL+15 C5+15 C4+1opener)
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45 White Mailing Envelopes, 100 GSM Mixed Sized Self Seal Greeting Card Envelopes, Invitation Envelopes for Posting Mailing Home Office and Ecommerce(15 DL+15 C5+15 C4+1opener)

Uncle Paul
Why we love it
  • Comes with envelope opener.
  • Quick self-seal adhesive strip.
  • Security tinted for privacy.
Main Highlights
  • PACKAGE INCLUDES - A pack of 45pcs white envelopes contains 15pcs DL series,15pcs C4 series and 15pcs C5 series,also comes with a random color envelope opener
  • DETAILS - 100GSM, DL:110X220MM(4-1/3 x 8-2/3inch), C5:229X162MM(9 x 6-3/8 inch),C4:229X324MM(9 x 12 3/4inch)
  • SELF-SEAL - Quick and convenient adhesive strip provides a reliable, tamper-evident tight seal to secure all enclosures. just remove strip and press to close
  • SECURITY TINTED - Each envelope is designed with blue printed patterns inside to protect contents and sensitive information
  • MULTIPURPOSE - As this is a mixed package that meets the needs of your various sizes of letters. It is perfect for mailing and organizing various letters, cards, files, menu, collectibles, commemorative cards and other families or commercial uses
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9.9
Exceptional
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9.9
Exceptional
Uncle Paul

45 White Mailing Envelopes, 100 GSM Mixed Sized Self Seal Greeting Card Envelopes, Invitation Envelopes for Posting Mailing Home Office and Ecommerce(15 DL+15 C5+15 C4+1opener)

Why we love it
  • Comes with envelope opener.
  • Quick self-seal adhesive strip.
  • Security tinted for privacy.
Main Highlights
  • PACKAGE INCLUDES - A pack of 45pcs white envelopes contains 15pcs DL series,15pcs C4 series and 15pcs C5 series,also comes with a random color envelope opener
  • DETAILS - 100GSM, DL:110X220MM(4-1/3 x 8-2/3inch), C5:229X162MM(9 x 6-3/8 inch),C4:229X324MM(9 x 12 3/4inch)
  • SELF-SEAL - Quick and convenient adhesive strip provides a reliable, tamper-evident tight seal to secure all enclosures. just remove strip and press to close
  • SECURITY TINTED - Each envelope is designed with blue printed patterns inside to protect contents and sensitive information
  • MULTIPURPOSE - As this is a mixed package that meets the needs of your various sizes of letters. It is perfect for mailing and organizing various letters, cards, files, menu, collectibles, commemorative cards and other families or commercial uses
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Value for Money
2
50 x Brown Mailing Envelopes Self Seal for Posting mailing Home Office and Ecommerce – A4 A5 DL (A4)
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50 x Brown Mailing Envelopes Self Seal for Posting mailing Home Office and Ecommerce – A4 A5 DL (A4)

SuperGift.com
Why we love it
  • Secure Seal Closure feature.
  • Quick and Easy envelopes.
  • Perfect for business correspondence.
Main Highlights
  • Secure Seal Closure for ease of use, added security and extra shelf life
  • (Quick and Easy) Envelopes
  • Perfect for business correspondence, letters, brochures and more
  • Suitable for printing
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9.7
Exceptional
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9.7
Exceptional
SuperGift.com

50 x Brown Mailing Envelopes Self Seal for Posting mailing Home Office and Ecommerce – A4 A5 DL (A4)

Why we love it
  • Secure Seal Closure feature.
  • Quick and Easy envelopes.
  • Perfect for business correspondence.
Main Highlights
  • Secure Seal Closure for ease of use, added security and extra shelf life
  • (Quick and Easy) Envelopes
  • Perfect for business correspondence, letters, brochures and more
  • Suitable for printing
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3
Padded Envelopes A3 A4 A5 A6, Padded Bubble Envelopes Bags Postal Wrap Envelope
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Padded Envelopes A3 A4 A5 A6, Padded Bubble Envelopes Bags Postal Wrap Envelope

Merrimen
Why we love it
  • Easy to use and convenient.
  • Quick sealing for speedy packing.
  • Lightweight yet protective design.
Main Highlights
  • Easy to use with excellent label adhesion. Write on easily with any pen, no need for anything special !
  • Pack your items fast with these peel and seal bags. Peel off the protective strip to reveal the adhesion and press down to seal envelope
  • Our padded envelopes are perfect for delivery and logistics for small accessories like cosmetics, jewelry, gadgets etc.
  • Lightweight yet superb padding for all goods, provided excellent protection against crushing
  • THESE PADDED ENVELOPES ARE NOT JIFFY BRANDED
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9.6
Superb
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9.6
Superb
Merrimen

Padded Envelopes A3 A4 A5 A6, Padded Bubble Envelopes Bags Postal Wrap Envelope

Why we love it
  • Easy to use and convenient.
  • Quick sealing for speedy packing.
  • Lightweight yet protective design.
Main Highlights
  • Easy to use with excellent label adhesion. Write on easily with any pen, no need for anything special !
  • Pack your items fast with these peel and seal bags. Peel off the protective strip to reveal the adhesion and press down to seal envelope
  • Our padded envelopes are perfect for delivery and logistics for small accessories like cosmetics, jewelry, gadgets etc.
  • Lightweight yet superb padding for all goods, provided excellent protection against crushing
  • THESE PADDED ENVELOPES ARE NOT JIFFY BRANDED
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4
G4GADGET 25 Pack Large Grey Mailing Bags 17x24 [432mm x 610mm] – Strong Postage Bags for Clothes, Vinted Shipping, Parcel Packaging, Delivery, Mailing & Posting
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G4GADGET 25 Pack Large Grey Mailing Bags 17x24 [432mm x 610mm] – Strong Postage Bags for Clothes, Vinted Shipping, Parcel Packaging, Delivery, Mailing & Posting

G4GADGET
Why we love it
  • Right quality and price.
  • Excellent value for money.
  • Great for various shapes.
Main Highlights
  • ✅ Strong & Tear-Resistant Design – Crafted with premium-grade plastic, our grey mailer bags offer superior durability and resistance against punctures, ideal for heavy-duty use.
  • ✅ Waterproof & Weatherproof – G4GADGET postage bags keep your items dry and safe from rain or dirt with their reliable water-resistant seal – perfect for all-weather mailing.
  • ✅ Self-Sealing Closure – No extra tape needed! Each mailing bag features a strong self-adhesive strip that ensures a secure seal and tamper-resistant protection during transit.
  • ✅ Ideal for Clothes & Online Sellers – These parcel bags are the go-to choice for Vinted, eBay, Depop, and small businesses. Perfect for shipping clothes, soft goods, and boxed items.
  • ✅ Versatile & Lightweight – Large enough for shoe boxes and multiple garments, yet light to save on postage. Use for personal or business shipping with confidence.
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9.4
Superb
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9.4
Superb
G4GADGET

G4GADGET 25 Pack Large Grey Mailing Bags 17x24 [432mm x 610mm] – Strong Postage Bags for Clothes, Vinted Shipping, Parcel Packaging, Delivery, Mailing & Posting

Why we love it
  • Right quality and price.
  • Excellent value for money.
  • Great for various shapes.
Main Highlights
  • ✅ Strong & Tear-Resistant Design – Crafted with premium-grade plastic, our grey mailer bags offer superior durability and resistance against punctures, ideal for heavy-duty use.
  • ✅ Waterproof & Weatherproof – G4GADGET postage bags keep your items dry and safe from rain or dirt with their reliable water-resistant seal – perfect for all-weather mailing.
  • ✅ Self-Sealing Closure – No extra tape needed! Each mailing bag features a strong self-adhesive strip that ensures a secure seal and tamper-resistant protection during transit.
  • ✅ Ideal for Clothes & Online Sellers – These parcel bags are the go-to choice for Vinted, eBay, Depop, and small businesses. Perfect for shipping clothes, soft goods, and boxed items.
  • ✅ Versatile & Lightweight – Large enough for shoe boxes and multiple garments, yet light to save on postage. Use for personal or business shipping with confidence.
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5
FIRST CHOICE KAYA 25, 50, 100 DL White Mailing Envelopes Self Seal for Posting mailing Home Office and Ecommerce Peel and Seal (100)
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FIRST CHOICE KAYA 25, 50, 100 DL White Mailing Envelopes Self Seal for Posting mailing Home Office and Ecommerce Peel and Seal (100)

FIRST CHOICE KAYA
Why we love it
  • Great protection for items.
  • Reusable and durable design.
  • Easy Peel & Seal.
Main Highlights
  • Great Protection - ProtectiveEnvelopes that can be used to protect beads, small and tiny things from scuffs and scrapes.Ideal for invoices, letters and more
  • Usage - Reusable, It is durable and designed for repeated use and eyelets are reinforced . Great for home, office, school, interoffice or mailing.
  • Condition - Make a difference to your mail with these luxurious Premium Business envelopes.
  • Save Time - Easy to use Peel & Seal close, and Rip & Strip open; Speed up packing times; Convenient for customers
  • Quantity - Choose the Quantity of Pack of 25 , 50 or 100
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9.4
Superb
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9.4
Superb
FIRST CHOICE KAYA

FIRST CHOICE KAYA 25, 50, 100 DL White Mailing Envelopes Self Seal for Posting mailing Home Office and Ecommerce Peel and Seal (100)

Why we love it
  • Great protection for items.
  • Reusable and durable design.
  • Easy Peel & Seal.
Main Highlights
  • Great Protection - ProtectiveEnvelopes that can be used to protect beads, small and tiny things from scuffs and scrapes.Ideal for invoices, letters and more
  • Usage - Reusable, It is durable and designed for repeated use and eyelets are reinforced . Great for home, office, school, interoffice or mailing.
  • Condition - Make a difference to your mail with these luxurious Premium Business envelopes.
  • Save Time - Easy to use Peel & Seal close, and Rip & Strip open; Speed up packing times; Convenient for customers
  • Quantity - Choose the Quantity of Pack of 25 , 50 or 100
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6
25 x Strong Large Grey Mailing Postal Postage Bags 17 x 24 Packaging Mailers [Use in Parcel, Delivery, Shipping, Mail, Package] [432mm x 610mm]
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25 x Strong Large Grey Mailing Postal Postage Bags 17 x 24 Packaging Mailers [Use in Parcel, Delivery, Shipping, Mail, Package] [432mm x 610mm]

iSOUL
8% Off
Why we love it
  • Water and dirt resistant.
  • Permanent self-seal closure.
  • Lightweight and sturdy design.
Main Highlights
  • This iSOUL Opaque Mailing bags incorporate a permanent self-seal closure and are made from an opaque 60-micron film. Our posting bags self-adhesive strong closure, water and dirt resistant air sealed bags made for Secure the inside and outside.
  • Safe and Secure Package Bags for Clothes or Packaging: These plastic mailers have a sticky strip for easy closure. Once sealed, these bags are very hard to open allowing your items to arrive safely without risk of opening or tampering.
  • Plastic envelopes for posting: iSOUL Large postage bags are very light weight and sturdy. You can use its full size or put something smaller inside and wrap the excess before sealing. Postage Bags for clothes , Books, and more
  • This Plastic Postage Bags are can be use in any Courier or sealed Airtight storage Purpose, you will get these bags in five different sizes for any size packing material, with the self-seal lip make the parcel air tight and water resistant for personal and business use.
  • We Have Small to Large Mailing bags with the size of 6 x 9 Inch / 9 x 12 Inch / 10 x 14 Inch / 12 x 16 / 17 x 24 Inch. Parcel bags for posting Mailing Packaging and more.
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9.3
Superb
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9.3
Superb
iSOUL

25 x Strong Large Grey Mailing Postal Postage Bags 17 x 24 Packaging Mailers [Use in Parcel, Delivery, Shipping, Mail, Package] [432mm x 610mm]

8% Off
Why we love it
  • Water and dirt resistant.
  • Permanent self-seal closure.
  • Lightweight and sturdy design.
Main Highlights
  • This iSOUL Opaque Mailing bags incorporate a permanent self-seal closure and are made from an opaque 60-micron film. Our posting bags self-adhesive strong closure, water and dirt resistant air sealed bags made for Secure the inside and outside.
  • Safe and Secure Package Bags for Clothes or Packaging: These plastic mailers have a sticky strip for easy closure. Once sealed, these bags are very hard to open allowing your items to arrive safely without risk of opening or tampering.
  • Plastic envelopes for posting: iSOUL Large postage bags are very light weight and sturdy. You can use its full size or put something smaller inside and wrap the excess before sealing. Postage Bags for clothes , Books, and more
  • This Plastic Postage Bags are can be use in any Courier or sealed Airtight storage Purpose, you will get these bags in five different sizes for any size packing material, with the self-seal lip make the parcel air tight and water resistant for personal and business use.
  • We Have Small to Large Mailing bags with the size of 6 x 9 Inch / 9 x 12 Inch / 10 x 14 Inch / 12 x 16 / 17 x 24 Inch. Parcel bags for posting Mailing Packaging and more.
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7
20Pcs A4 Envelopes Self-Seal iSOUL 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend Envelope
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20Pcs A4 Envelopes Self-Seal iSOUL 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend Envelope

iSOUL
Why we love it
  • Prevents document bending and damage.
  • Ideal for various mailings.
  • Made from recycled materials.
Main Highlights
  • Peel & Seal Closure: Easy-to-use, secure peel-and-seal closure to keep your contents safe and tamper-proof.
  • Perfect Size: ideal for standard-sized A4, invitations, and cards etc.
  • Multi Purpose: Our large letter A4 posting envelopes are great for mailing holiday cards, greeting cards, invitations, announcements, photos, letters, wage slips, pay slips, dinner money, business office home and personal use
  • Eco-Friendly: Made from recyclable materials, these envelopes are environmentally friendly, helping you reduce your carbon footprint.
  • Includes: 20 x A4 C4 324mm x 229mm Manilla Hard Board Backed Envelopes Do Not Bend Envelope
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9.2
Superb
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9.2
Superb
iSOUL

20Pcs A4 Envelopes Self-Seal iSOUL 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend Envelope

Why we love it
  • Prevents document bending and damage.
  • Ideal for various mailings.
  • Made from recycled materials.
Main Highlights
  • Peel & Seal Closure: Easy-to-use, secure peel-and-seal closure to keep your contents safe and tamper-proof.
  • Perfect Size: ideal for standard-sized A4, invitations, and cards etc.
  • Multi Purpose: Our large letter A4 posting envelopes are great for mailing holiday cards, greeting cards, invitations, announcements, photos, letters, wage slips, pay slips, dinner money, business office home and personal use
  • Eco-Friendly: Made from recyclable materials, these envelopes are environmentally friendly, helping you reduce your carbon footprint.
  • Includes: 20 x A4 C4 324mm x 229mm Manilla Hard Board Backed Envelopes Do Not Bend Envelope
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8
JeeJaan® 50 Pcs of Grey Parcel Bags 12" x 16" - 305 x 405 mm Courier Mailer Plastic Parcel Envelopes Durable Packaging Shipping Bags Waterproof and Tear-Proof Postal Mailer Courier Bag
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JeeJaan® 50 Pcs of Grey Parcel Bags 12" x 16" - 305 x 405 mm Courier Mailer Plastic Parcel Envelopes Durable Packaging Shipping Bags Waterproof and Tear-Proof Postal Mailer Courier Bag

JeeJaan
18% Off
Why we love it
  • Strong self-adhesive strip.
  • Durable yet lightweight.
  • Waterproof and moisture-resistant.
Main Highlights
  • Strong Poly Mailer Bags
  • COLOR: Grey / Gray Postal Bags |THICKNESS: 50MU - 60MU (robust+ lightweight)
  • ALL SEASON GLUE: Permanently closed once bags sealed | Self Adhesive Plastic Mailing Bags
  • 100% Moisture Resistant and Water Proof Postage Bags
  • OPAQUE: Inside Black |100% RECYCLABLE Low-Density Polyethylene Envelopes Bags
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9.2
Superb
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9.2
Superb
JeeJaan

JeeJaan® 50 Pcs of Grey Parcel Bags 12" x 16" - 305 x 405 mm Courier Mailer Plastic Parcel Envelopes Durable Packaging Shipping Bags Waterproof and Tear-Proof Postal Mailer Courier Bag

18% Off
Why we love it
  • Strong self-adhesive strip.
  • Durable yet lightweight.
  • Waterproof and moisture-resistant.
Main Highlights
  • Strong Poly Mailer Bags
  • COLOR: Grey / Gray Postal Bags |THICKNESS: 50MU - 60MU (robust+ lightweight)
  • ALL SEASON GLUE: Permanently closed once bags sealed | Self Adhesive Plastic Mailing Bags
  • 100% Moisture Resistant and Water Proof Postage Bags
  • OPAQUE: Inside Black |100% RECYCLABLE Low-Density Polyethylene Envelopes Bags
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9
Triplast 10 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents
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Triplast 10 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents

Triplast
Why we love it
  • Perfect for flat documents.
  • Provides reliable protection.
  • Eco-friendly and sustainable.
Main Highlights
  • A MAILING ESSENTIAL: Pack of 10 x C4 rigid mailers designed to contain unfolded A4 paper (or A3 paper folded in half) - perfectly sized for posting & storing flat documents, certificates, magazines, reports, portfolios, contracts & photo prints
  • WILL NOT BEND: 120gsm kraft paper front & 1000 micron board back construction offers all-round protection & rigidity to keep contents flat, crease-free & safe. "Please do not bend" is printed in large red font on the front to caution all handlers.
  • QUICK, EASY & SECURE: Built-in peel & seal strip reduces packing time & cost by providing a strong & hassle-free seal while also offering extended shelf-life over self seal envelopes - just remove the strip & press the flap down to seal!
  • SAVE ON PACKAGING & POSTAGE: A more cost-effective & waste-free alternative to all board envelopes, these light yet sturdy card backed envelopes are also cheaper to post. You may write on them directly to eliminate the need for extra address labels.
  • AN ECO-CONSCIOUS CHOICE: Made from 100% recycled material, fully kerbside recyclable & biodegradable - these hard back envelopes are a plastic-free, sustainable & environmentally conscious packaging choice for office, school & home use.
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9.1
Superb
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9.1
Superb
Triplast

Triplast 10 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents

Why we love it
  • Perfect for flat documents.
  • Provides reliable protection.
  • Eco-friendly and sustainable.
Main Highlights
  • A MAILING ESSENTIAL: Pack of 10 x C4 rigid mailers designed to contain unfolded A4 paper (or A3 paper folded in half) - perfectly sized for posting & storing flat documents, certificates, magazines, reports, portfolios, contracts & photo prints
  • WILL NOT BEND: 120gsm kraft paper front & 1000 micron board back construction offers all-round protection & rigidity to keep contents flat, crease-free & safe. "Please do not bend" is printed in large red font on the front to caution all handlers.
  • QUICK, EASY & SECURE: Built-in peel & seal strip reduces packing time & cost by providing a strong & hassle-free seal while also offering extended shelf-life over self seal envelopes - just remove the strip & press the flap down to seal!
  • SAVE ON PACKAGING & POSTAGE: A more cost-effective & waste-free alternative to all board envelopes, these light yet sturdy card backed envelopes are also cheaper to post. You may write on them directly to eliminate the need for extra address labels.
  • AN ECO-CONSCIOUS CHOICE: Made from 100% recycled material, fully kerbside recyclable & biodegradable - these hard back envelopes are a plastic-free, sustainable & environmentally conscious packaging choice for office, school & home use.
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10
Double Dragon 20-Pack A5 C5 Manilla Hard Board Backed Envelopes | 229mm x 162mm | 'Please Do Not Bend' Printed | Padded & Tamper-Proof | Self-Seal Closure
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Double Dragon 20-Pack A5 C5 Manilla Hard Board Backed Envelopes | 229mm x 162mm | 'Please Do Not Bend' Printed | Padded & Tamper-Proof | Self-Seal Closure

Double Dragon
Why we love it
  • Perfect fit for A5 documents.
  • Sturdy protection against bending.
  • Eco-friendly and sustainable materials.
Main Highlights
  • ✅ PERFECT A5 FIT & PROFESSIONAL LOOK: A5 Manilla Hard Board Backed Envelopes (229mm x 162mm), designed to hold A5 documents, certificates, photo prints, invitations, and cards without folding. Pre-printed with "Please Do Not Bend" for careful handling and a professional finish. Comes in a value pack of 20.
  • ✅ RIGID HARD BOARD PROTECTION: Constructed with a 120 GSM kraft paper front and 1000 micron hard board back, these envelopes prevent bending and creases, keeping your documents, photos, and artwork safe and intact during shipping.
  • ✅ STRONG & SECURE SELF-SEAL CLOSURE: Features a 10mm wide, high-quality self-adhesive strip for quick, tamper-proof sealing — no need for tape or glue, keeping your contents safe and secure.
  • ✅ LIGHTWEIGHT & COST-EFFECTIVE: Sturdy yet lightweight design helps save on postage costs. Easily write addresses directly on the envelope or attach sticky labels as needed.
  • ✅ ECO-FRIENDLY & SUSTAINABLE: Made from 100% recycled, biodegradable, and plastic-free materials — an environmentally conscious choice for both businesses and personal use.
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8.9
Excellent
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8.9
Excellent
Double Dragon

Double Dragon 20-Pack A5 C5 Manilla Hard Board Backed Envelopes | 229mm x 162mm | 'Please Do Not Bend' Printed | Padded & Tamper-Proof | Self-Seal Closure

Why we love it
  • Perfect fit for A5 documents.
  • Sturdy protection against bending.
  • Eco-friendly and sustainable materials.
Main Highlights
  • ✅ PERFECT A5 FIT & PROFESSIONAL LOOK: A5 Manilla Hard Board Backed Envelopes (229mm x 162mm), designed to hold A5 documents, certificates, photo prints, invitations, and cards without folding. Pre-printed with "Please Do Not Bend" for careful handling and a professional finish. Comes in a value pack of 20.
  • ✅ RIGID HARD BOARD PROTECTION: Constructed with a 120 GSM kraft paper front and 1000 micron hard board back, these envelopes prevent bending and creases, keeping your documents, photos, and artwork safe and intact during shipping.
  • ✅ STRONG & SECURE SELF-SEAL CLOSURE: Features a 10mm wide, high-quality self-adhesive strip for quick, tamper-proof sealing — no need for tape or glue, keeping your contents safe and secure.
  • ✅ LIGHTWEIGHT & COST-EFFECTIVE: Sturdy yet lightweight design helps save on postage costs. Easily write addresses directly on the envelope or attach sticky labels as needed.
  • ✅ ECO-FRIENDLY & SUSTAINABLE: Made from 100% recycled, biodegradable, and plastic-free materials — an environmentally conscious choice for both businesses and personal use.
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We scanned 282 products

We reviewed these offers relevant to the Envelopes Mailing Supplies within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Uncle Paul, SuperGift.com, Merrimen, G4GADGET, FIRST CHOICE KAYA, iSOUL, JeeJaan, Triplast, Double Dragon, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Envelopes Mailing Supplies in the market, we considered we took a deep dive into 1411 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that: