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Best Envelopes Mailing Supplies of 2025
Last updated on 30/11/2025
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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)
Uncle Paul
Free Shipping
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)
Free Shipping
Check Price
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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)
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)
Check Price
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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
GP Globe Packaging 50 x C4 A4 White Plain Self Seal Paper Envelopes (Size: 324x229mm) - Printer Safe & Fully Opaque - Security Mailing Envelopes for Home, Office & Business Use
Globe Packaging
Free Shipping
Why we love it
Perfect fit for A4 documents.
High-quality 90gsm construction.
Secure self-sealing design.
Main Highlights
INCLUDED IN THIS PACK: A pack of 50 white paper envelopes | SIZE: C4 (fits A4 paper sheets) | ENVELOPE DIMENSIONS: 324mm x 229mm | THICKNESS: 90gsm | MADE in the UK
ENHANCED SECURITY: Our white mailing envelopes feature an interior blue security tint to obscure text, ensuring confidential documents stay private. Send with confidence and protect sensitive information effortlessly!
EASY-TO-USE: The self-seal adhesive ensures tamper-proof closure without the need for tape, glue, or licking - simply fold and press the flap shut! These plain envelopes are also compatible with most inkjet and laser printers.
AN EVERYDAY ESSENTIAL: These self-seal envelopes are perfect for organising & posting letters, invoices, brochures, legal documents, payslips, statements, etc - a budget-friendly mailing solution for any home or office!
AN ECO-CONSCIOUS CHOICE: Our white envelopes are made from paper sourced from sustainably managed forests (PEFC Certified) and are 100% recyclable. These postal envelopes are kind to your wallet, and also the planet!
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9.6
Superb
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9.6
Superb
Globe Packaging
GP Globe Packaging 50 x C4 A4 White Plain Self Seal Paper Envelopes (Size: 324x229mm) - Printer Safe & Fully Opaque - Security Mailing Envelopes for Home, Office & Business Use
Free Shipping
Check Price
Show More
Why we love it
Perfect fit for A4 documents.
High-quality 90gsm construction.
Secure self-sealing design.
Main Highlights
INCLUDED IN THIS PACK: A pack of 50 white paper envelopes | SIZE: C4 (fits A4 paper sheets) | ENVELOPE DIMENSIONS: 324mm x 229mm | THICKNESS: 90gsm | MADE in the UK
ENHANCED SECURITY: Our white mailing envelopes feature an interior blue security tint to obscure text, ensuring confidential documents stay private. Send with confidence and protect sensitive information effortlessly!
EASY-TO-USE: The self-seal adhesive ensures tamper-proof closure without the need for tape, glue, or licking - simply fold and press the flap shut! These plain envelopes are also compatible with most inkjet and laser printers.
AN EVERYDAY ESSENTIAL: These self-seal envelopes are perfect for organising & posting letters, invoices, brochures, legal documents, payslips, statements, etc - a budget-friendly mailing solution for any home or office!
AN ECO-CONSCIOUS CHOICE: Our white envelopes are made from paper sourced from sustainably managed forests (PEFC Certified) and are 100% recyclable. These postal envelopes are kind to your wallet, and also the planet!
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4
125 Mixed Grey Plastic Mailing Mail Post Postage Bags Assorted Sizes Packaging Poly Postal mailers MSDS-SOLUTIONZ
MSDS-SOLUTIONZ
27% Off
Why we love it
Durable and lightweight material.
Secure tamper-proof closure.
Variety of bag sizes.
Main Highlights
MSDS-SOLUTIONZ Provides 100% Opaque Mailing Bags. Safe and secure- these plastic postal bags mailers have a sticky strip for easy closure. Once sealed, these packaging bags are very hard to open allowing your items to arrive safely without risk of opening or tampering.
Uses: Grey shipping bags are the ideal postal packing solution for many different items, including parcel bags for posting clothes,magazines, postage bags for clothes – even boxes – and other non-fragile direct mail goods in a safe and secure way.
Features: These parcel bags are extremely strong all bags are manufactured using tough polythene that is at least 50 micron thickness, providing incredible durability within our postal system yet still being very lightweight, waterproof and burst proof.
Packaging Includes Total 125 delivery bags for parcels - 25 Bags From Each Size. 5 SIZES 4.5x7"- 6.5x9" - 9 x 12" - 10x14" - 12x16"
We believe in our product and we use them at our home. However, if you are not satisfied with the performance let us know. Your satisfaction is our priority! Please feel free to approach us. We are here to listen to your needs and answer your queries.
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9.4
Superb
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9.4
Superb
MSDS-SOLUTIONZ
125 Mixed Grey Plastic Mailing Mail Post Postage Bags Assorted Sizes Packaging Poly Postal mailers MSDS-SOLUTIONZ
27% Off
Check Price
Show More
Why we love it
Durable and lightweight material.
Secure tamper-proof closure.
Variety of bag sizes.
Main Highlights
MSDS-SOLUTIONZ Provides 100% Opaque Mailing Bags. Safe and secure- these plastic postal bags mailers have a sticky strip for easy closure. Once sealed, these packaging bags are very hard to open allowing your items to arrive safely without risk of opening or tampering.
Uses: Grey shipping bags are the ideal postal packing solution for many different items, including parcel bags for posting clothes,magazines, postage bags for clothes – even boxes – and other non-fragile direct mail goods in a safe and secure way.
Features: These parcel bags are extremely strong all bags are manufactured using tough polythene that is at least 50 micron thickness, providing incredible durability within our postal system yet still being very lightweight, waterproof and burst proof.
Packaging Includes Total 125 delivery bags for parcels - 25 Bags From Each Size. 5 SIZES 4.5x7"- 6.5x9" - 9 x 12" - 10x14" - 12x16"
We believe in our product and we use them at our home. However, if you are not satisfied with the performance let us know. Your satisfaction is our priority! Please feel free to approach us. We are here to listen to your needs and answer your queries.
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5
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
Free Shipping
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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9.4
Superb
Check Price
9.4
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
Free Shipping
Check Price
Show More
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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6
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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9.3
Superb
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9.3
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)
Check Price
Show More
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
Show More
7
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
6% Off
Free Shipping
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
6% Off
Free Shipping
Check Price
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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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8
Mailing Bags, Grey Parcel Delivery Bags with Self-Seal Closure, Flexible Lightweight and Tear Proof Postal Mailing Bags, Multipack Mailing Envelope Bags (06x09, 25pk)
Straame
Why we love it
Tear-proof and water-resistant.
Self-seal closure provides privacy.
Lightweight and flexible mailing.
Main Highlights
TEAR-PROOF MAILING BAGS: Perfect for sending multiple items, the postal bags are made from durable material. Tear-proof and resistant to water. Anything you send by mail with these bags will be safe from dust, moisture, or temper.
SELF-SEAL CLOSURE: The sealing lip permanently close and conceal the bag with strong adhesive glue. Put the content in the bag, peel the strap and seal carefully. Once it is closed, it is tough to open again, ensuring total privacy of the items sent.
SAFE AND SECURE: Safely and securely mail your items. The high-quality material of the mailing bags is 100% opaque to ensure confidentiality and privacy. The adhesive glue on the sealing lip provides the delivery bags with no risk of opening or tampering.
MAILING SOLUTION: Designed to be lightweight and flexible, these mailing bags are the ideal mailing solutions for a wide variety of business or private use. The postal bags have a great capacity to bear the weight of books, magazines, documents, clothes, shoes or other office and stationery items.
SPECIFICATIONS: These packaging bags are available in a wide range of sizes, from small to large: 6x9inch (152 x 229 mm approx.), 9x12inch (229 x 305 mm approx.), 10x14inch (254 x 356 mm approx.), 12x16inch (305 x 406 mm approx.) For your convenience, we provide them in different multi quantity 25, 50, 100, 300, 500, 1000, 2000.
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9.2
Superb
Check Price
9.2
Superb
Straame
Mailing Bags, Grey Parcel Delivery Bags with Self-Seal Closure, Flexible Lightweight and Tear Proof Postal Mailing Bags, Multipack Mailing Envelope Bags (06x09, 25pk)
Check Price
Show More
Why we love it
Tear-proof and water-resistant.
Self-seal closure provides privacy.
Lightweight and flexible mailing.
Main Highlights
TEAR-PROOF MAILING BAGS: Perfect for sending multiple items, the postal bags are made from durable material. Tear-proof and resistant to water. Anything you send by mail with these bags will be safe from dust, moisture, or temper.
SELF-SEAL CLOSURE: The sealing lip permanently close and conceal the bag with strong adhesive glue. Put the content in the bag, peel the strap and seal carefully. Once it is closed, it is tough to open again, ensuring total privacy of the items sent.
SAFE AND SECURE: Safely and securely mail your items. The high-quality material of the mailing bags is 100% opaque to ensure confidentiality and privacy. The adhesive glue on the sealing lip provides the delivery bags with no risk of opening or tampering.
MAILING SOLUTION: Designed to be lightweight and flexible, these mailing bags are the ideal mailing solutions for a wide variety of business or private use. The postal bags have a great capacity to bear the weight of books, magazines, documents, clothes, shoes or other office and stationery items.
SPECIFICATIONS: These packaging bags are available in a wide range of sizes, from small to large: 6x9inch (152 x 229 mm approx.), 9x12inch (229 x 305 mm approx.), 10x14inch (254 x 356 mm approx.), 12x16inch (305 x 406 mm approx.) For your convenience, we provide them in different multi quantity 25, 50, 100, 300, 500, 1000, 2000.
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9
Large Postage Bags- 17" x 24" (43cm x 60cm) - Large Mailing Bags for Postage (5)
Calzette
Free Shipping
Why we love it
Strong and waterproof design.
Recycled materials, no odor.
Easy and secure sealing.
Main Highlights
PRACTICAL SIZE FOR EVERYDAY USE – Measuring 17" x 24" (43cm x 60cm), these large postage bags are ideal for sending clothes, bedding, cushions, or other bulky items securely
QUICK AND SECURE CLOSURE – Each mailing bag features a permanent self-seal strip, making it simple to pack and post parcels without the need for additional tape
DURABLE AND WATERPROOF – Strong co-extruded polythene resists tearing and moisture, ensuring your parcels arrive safely and well protected
LIGHTWEIGHT TO HELP REDUCE POSTAGE COST – Robust yet lightweight packaging bags keep shipping expenses down while protecting the privacy of your contents
VERSATILE FOR HOME OR BUSINESS – Suitable as parcel bags for posting clothes on Vinted or eBay, for courier deliveries, or for storing items around the home
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9.1
Superb
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9.1
Superb
Calzette
Large Postage Bags- 17" x 24" (43cm x 60cm) - Large Mailing Bags for Postage (5)
Free Shipping
Check Price
Show More
Why we love it
Strong and waterproof design.
Recycled materials, no odor.
Easy and secure sealing.
Main Highlights
PRACTICAL SIZE FOR EVERYDAY USE – Measuring 17" x 24" (43cm x 60cm), these large postage bags are ideal for sending clothes, bedding, cushions, or other bulky items securely
QUICK AND SECURE CLOSURE – Each mailing bag features a permanent self-seal strip, making it simple to pack and post parcels without the need for additional tape
DURABLE AND WATERPROOF – Strong co-extruded polythene resists tearing and moisture, ensuring your parcels arrive safely and well protected
LIGHTWEIGHT TO HELP REDUCE POSTAGE COST – Robust yet lightweight packaging bags keep shipping expenses down while protecting the privacy of your contents
VERSATILE FOR HOME OR BUSINESS – Suitable as parcel bags for posting clothes on Vinted or eBay, for courier deliveries, or for storing items around the home
Show More
10
14x16 50 Mailing Bags Self Seal Grey Parcel Bags | Packaging Mailer, Plastic Envelopes Medium Mailing Bags, Postage Bags, Shipping Bags | Tear Proof Delivery Bags for Parcels Packing
Apex Business Supplies
Why we love it
Economical pack of 50 bags.
100% opaque for confidentiality.
Waterproof and puncture resistant.
Main Highlights
Pack of 50: Our 14x16 Inch 55 Micron Mailing Bags are Economical and convenient, this pack contains 50 parcel bags to meet your shipping and mailing needs.
Safe & Secure: High-quality Material Of The Mailing Bags Is 100% Opaque To Ensure Confidentiality And Privacy. Adhesive Glue On The Sealing Lip Provides Delivery Bags With No Risk Of Opening Or Tampering.
Strong Self Seal: These Plastic Postal Bag Mailers Have A Sticky Strip For Easy Closure. Once Sealed, Our Packaging Bags Are Very Hard To Open.
Lightweight and Cost-Effective: These Mailing Bags lightweight packaging mailers that cary heavy weight without compromising on strength or security during delivery.
Strong Mailing Bags: The waterproof design protects against water damage during transit. Resistant to punctures and tearing, ensuring that items arrive safely and intact.
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8.9
Excellent
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8.9
Excellent
Apex Business Supplies
14x16 50 Mailing Bags Self Seal Grey Parcel Bags | Packaging Mailer, Plastic Envelopes Medium Mailing Bags, Postage Bags, Shipping Bags | Tear Proof Delivery Bags for Parcels Packing
Check Price
Show More
Why we love it
Economical pack of 50 bags.
100% opaque for confidentiality.
Waterproof and puncture resistant.
Main Highlights
Pack of 50: Our 14x16 Inch 55 Micron Mailing Bags are Economical and convenient, this pack contains 50 parcel bags to meet your shipping and mailing needs.
Safe & Secure: High-quality Material Of The Mailing Bags Is 100% Opaque To Ensure Confidentiality And Privacy. Adhesive Glue On The Sealing Lip Provides Delivery Bags With No Risk Of Opening Or Tampering.
Strong Self Seal: These Plastic Postal Bag Mailers Have A Sticky Strip For Easy Closure. Once Sealed, Our Packaging Bags Are Very Hard To Open.
Lightweight and Cost-Effective: These Mailing Bags lightweight packaging mailers that cary heavy weight without compromising on strength or security during delivery.
Strong Mailing Bags: The waterproof design protects against water damage during transit. Resistant to punctures and tearing, ensuring that items arrive safely and intact.
Show More