Best Envelopes Mailing Supplies of 2025

Last updated on 19/10/2025

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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)

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

9.9

Exceptional

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

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

Value for Money

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

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

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

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

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!

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

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!

All-Pack Solutions 10 Royal Mail Small Parcel Postal mailing Boxes 350x250x160mm (Deep Option)

All-Pack Solutions 10 Royal Mail Small Parcel Postal mailing Boxes 350x250x160mm (Deep Option)

All-Pack Solutions

Why we love it

High-quality UK manufacturing.
Exclusive to All-Pack Solutions.
Dimensions fit various needs.

Main Highlights

Quantity: 10
Dimensions (Length / Width / Depth): 350mm x 250mm x 160mm / 13.7" x 9.8" x 6.2" / 35cm x 25cm x 16cm
Type: Single Wall (Deep option)
Colour: Brown
This product is manufactured to high standards in the UK exclusively for All-Pack Solutions Ltd and is not supplied to any other re-seller. Should you purchase this item from another seller, it will not be those manufactured for ourselves, and is likely to be a substandard inferior item.

All-Pack Solutions 10 Royal Mail Small Parcel Postal mailing Boxes 350x250x160mm (Deep Option)

Why we love it

High-quality UK manufacturing.
Exclusive to All-Pack Solutions.
Dimensions fit various needs.

Main Highlights

Quantity: 10
Dimensions (Length / Width / Depth): 350mm x 250mm x 160mm / 13.7" x 9.8" x 6.2" / 35cm x 25cm x 16cm
Type: Single Wall (Deep option)
Colour: Brown
This product is manufactured to high standards in the UK exclusively for All-Pack Solutions Ltd and is not supplied to any other re-seller. Should you purchase this item from another seller, it will not be those manufactured for ourselves, and is likely to be a substandard inferior item.

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

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% OffFree 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.

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% OffFree 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.

UK SUPPLIES LIMITED Padded Gold Bubble Envelopes (Pick Size & Qty) Peal & Seal Packaging Bags Bubble Mailers Postal Wrap Envelopes Parcel Mailers Ideal for Mailing Goods A6(100mm x 165mm) Pack of 10

UK SUPPLIES LIMITED Padded Gold Bubble Envelopes (Pick Size & Qty) Peal & Seal Packaging Bags Bubble Mailers Postal Wrap Envelopes Parcel Mailers Ideal for Mailing Goods A6(100mm x 165mm) Pack of 10

UK SUPPLIES LIMITED

Why we love it

Secure peel & seal closure.
Excellent protective bubble lining.
Durable and tear-resistant material.

Main Highlights

SECURE PACKAGING:These bubble padded envelopes feature a strong peel & seal closure, ensuring your items stay securely packed during transit.
EXTRA CUSHIONING: With an internal bubble lining, these padded envelopes provide excellent protection, preventing damage to delicate items
DURABLE AND RELIABLE: Made from high-quality materials, these bubble envelopes are durable and resistant to tears, ensuring safe delivery of your goods
VERSATILE USE: Ideal for both personal and business use, these padded envelopes are perfect for mailing a variety of items, from documents to small electronics.
EASY TO USE: The convenient peel & seal design makes these bubble padded envelopes quick and easy to use, providing a secure seal every time.

UK SUPPLIES LIMITED Padded Gold Bubble Envelopes (Pick Size & Qty) Peal & Seal Packaging Bags Bubble Mailers Postal Wrap Envelopes Parcel Mailers Ideal for Mailing Goods A6(100mm x 165mm) Pack of 10

Why we love it

Secure peel & seal closure.
Excellent protective bubble lining.
Durable and tear-resistant material.

Main Highlights

SECURE PACKAGING:These bubble padded envelopes feature a strong peel & seal closure, ensuring your items stay securely packed during transit.
EXTRA CUSHIONING: With an internal bubble lining, these padded envelopes provide excellent protection, preventing damage to delicate items
DURABLE AND RELIABLE: Made from high-quality materials, these bubble envelopes are durable and resistant to tears, ensuring safe delivery of your goods
VERSATILE USE: Ideal for both personal and business use, these padded envelopes are perfect for mailing a variety of items, from documents to small electronics.
EASY TO USE: The convenient peel & seal design makes these bubble padded envelopes quick and easy to use, providing a secure seal every time.

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 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

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

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® 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

Free Shipping

Why we love it

Strong self-adhesive strip.
Durable yet lightweight.
Waterproof and moisture-resistant.

Main Highlights

✅ JEEJAAN PLASTIC MAILING BAGS: Our 12"x16" grey mailing bags (pack of 50) offer secure deliveries with a strong self-adhesive strip. Available in various sizes to meet your shipping needs.
✅ COLOR & THICKNESS: Our 50mu grey postal bags are robust yet lightweight. They ensure durability without extra weight, offering both aesthetics and practicality for your packaging needs.
✅STRONG ADHESIVE SEAL: Our self-adhesive plastic postage bags with all-season glue ensure a secure, permanent seal, preventing accidental openings and tampering during transit.
✅MOISTURE AND WATERPROOF: Our waterproof delivery bags protect against moisture and water damage, ensuring your packages stay safe and dry throughout delivery.
✅ CUSTOMER SATISFACTION: Secure private shipments with our opaque grey envelopes. Made from recyclable material, they offer reliability and eco-friendliness. Satisfaction guaranteed!

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

Free Shipping

Why we love it

Strong self-adhesive strip.
Durable yet lightweight.
Waterproof and moisture-resistant.

Main Highlights

✅ JEEJAAN PLASTIC MAILING BAGS: Our 12"x16" grey mailing bags (pack of 50) offer secure deliveries with a strong self-adhesive strip. Available in various sizes to meet your shipping needs.
✅ COLOR & THICKNESS: Our 50mu grey postal bags are robust yet lightweight. They ensure durability without extra weight, offering both aesthetics and practicality for your packaging needs.
✅STRONG ADHESIVE SEAL: Our self-adhesive plastic postage bags with all-season glue ensure a secure, permanent seal, preventing accidental openings and tampering during transit.
✅MOISTURE AND WATERPROOF: Our waterproof delivery bags protect against moisture and water damage, ensuring your packages stay safe and dry throughout delivery.
✅ CUSTOMER SATISFACTION: Secure private shipments with our opaque grey envelopes. Made from recyclable material, they offer reliability and eco-friendliness. Satisfaction guaranteed!

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

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

G4GADGET

Free Shipping

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.

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

Free Shipping

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.

Merrimen Padded Envelopes A3 A4 A5 A6, Padded Bubble Envelopes Bags, Self-Seal, Postal Wrap Envelope

Merrimen Padded Envelopes A3 A4 A5 A6, Padded Bubble Envelopes Bags, Self-Seal, Postal Wrap Envelope

Merrimen

Free Shipping

Why we love it

Excellent label adhesion guaranteed.
Fast and easy sealing.
Superb protection against damage.

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

Merrimen Padded Envelopes A3 A4 A5 A6, Padded Bubble Envelopes Bags, Self-Seal, Postal Wrap Envelope

Free Shipping

Why we love it

Excellent label adhesion guaranteed.
Fast and easy sealing.
Superb protection against damage.

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

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, Globe Packaging, All-Pack Solutions, iSOUL, UK SUPPLIES LIMITED, FIRST CHOICE KAYA, JeeJaan, G4GADGET, Merrimen, 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:

The clear winner of our analysis is 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). We love many things about this product by Uncle Paul. What sets it apart from the competition is Comes with envelope opener, Quick self-seal adhesive strip, Security tinted for privacy.
The best value product for most shoppers and where user satisfaction is continuously the highest is 50 x Brown Mailing Envelopes Self Seal for Posting mailing Home Office and Ecommerce – A4 A5 DL (A4) by SuperGift.com based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Envelopes Mailing Supplies and the best cost-to-value ratio is 25 x Strong Large Grey Mailing Postal Postage Bags 17 x 24 Packaging Mailers [Use in Parcel, Delivery, Shipping, Mail, Package] [432mm x 610mm]at iSOUL with a 8% discount.
Our list of the best Envelopes Mailing Supplies is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.