The website for all your mailing bag needs

Mailing bags

Buy from a massive range of discount mailing bags now, including economy mailers, heavy duty mailers and secure mailing bags.

Mailing bags are a convenient and cost-effective alternative to regular paper envelopes and parcels for sending items in the post. Made from strong, lightweight and waterproof polythene, the contents of a mailing bag will be protected from the elements, whilst the bag itself won't rip or tear. Mailing bags at discount prices provide some of the best value you will find in office stationery and supplies, whilst a range of smart, glossy mailorder bags, coloured mailing bags and printed mailing bags means you can make a great first impression with customers.

Mailing bags are…

  • Convenient for sending items in the post that require additional protection or are needed to carry a brand.
  • Great at keeping package contents safe and dry during traditional mail or courier post.
  • Also known as mailers, poly-mailers, plastic envelopes or mailorder bags
  • Made from polythene to provide a perfect waterproof coating for your mail - much better than soggy envelopes!
  • Very light which means that postage costs stay low
  • Strong which means your envelope won’t tear or rip before it reaches its destination
  • Similar in appearance to a regular envelope - rectangular and flat - and open in the same way, at one end to allow you to place your package contents inside
  • Simple to use, with an adhesive strip running alongside the opening of the bag. Just fill the bag with your postage contents, rip off the covering tape, fold down the flap and your mailing bag is ready to post. Easy peasy!
  • A great way to advertise your business. Get your company logo, design or slogan printed on the outside of the mailing bag and impress your customers as their mail lands on their doormat

Results from recent searches on mailing bags

Tag Archives: plastic envelopes

Plastic envelopes need careful handling if they are meant to fit a greener packing story, because the material selection and the print claim can stop up pulling in alternative directions. A plain polythene suppliers wallet may be useful for wet or dirty paperwork, nevertheless it is still a plastic item that has to be justified against better board or paper alternatives. If the envelope is manufactured from recycled content, the gauge and stop still need checking so the film does not split in dispatch or scuff in transit. A transparent specification assists stop green wording from outrunning the proper performance on the packing line.

polythene suppliers envelopes in a heavier gauge give better protection when documents or small products need to travel through sorting, storage, and repeated hand-to-hand movement. A stronger film resists splits at the corners, copes better with sharp edges, and stays intact when bundles are stacked or slid across a trolley. That matters in dispatch because a thin mailer can fail after a short journey, leaving contents exposed and creating avoidable rework. Extra strength also assists the pack grasp its shape, so labels stay readable and the sealed edge is less likely to open below strain. A tougher envelope reduces damage before it reaches the carrier.

Plastic mailers need above a tidy stop if parcels are going to survive the mail in one part. A superb self-seal bag relies on consistent film gauge, a clean adhesive strip, and enough stiffness to resist snagging when cartons are stacked or bags are slid across a bench. Grey outer film can conceal dirt better than transparent material, nevertheless the proper value lies in proper handling and a seal that closes properly first time. Weak bags split at the corners, waste time at dispatch, and lead to avoidable complaints. A well-manufactured mailer retains light products secure and speeds up packing without calling for additional tape.

More Bike courier bags

Courier bags need to be treated as working packaging, not only something that grasps a package together. A superb bag has to stay light enough for efficient packing and superb pallet yield, nevertheless it still requirements to survive being dragged above concrete, caught in a busy select face, and folded at the gusset without cracking or scuffing through. That is why high-density polythene suppliers with tight gauge control is often favoured: also much film thickness wastes space, while also small leads to burst seams and lip failure. When the extrusion is consistent, the bags open more cleanly, seal better, and retain pace with fast dispatch lines.

Postal bags work optimal when the film grade, seal design, and opening style match the method products are picked and packed. A bag that is easy to occupy on the line can still fail if the seal is weak, the gauge is also light, or the bag mouth catches amid dispatch. polythene suppliers selection affects stretch, puncture resistance, and how well the bag stands up to sharp corners or repeated handling in transit. Self-seal strips also matter, because poor closure creates complaints and additional rework. A well-set mailing bag reduces damage, speeds packing, and retains the consignment looking tidy when it reaches the client.

Recycled polythene suppliers mailers are only as superb as the method the recovered material is sorted and blended before film is manufactured. When the feedstock is clean and the melt runs evenly, the finished mailer comes off with a steadier gauge and better puncture resistance, so it copes far better with rough handling than the thin sacks once used for light parcels. That makes a proper contrast on the packing bench, because a flimsy bag wastes time, split corners create rework, and distorted film can throw off the all pack sequence. A sound grade retains its shape and gives a safer consignment.

Grey Mailing Bags

Mailing bags work optimal when the bag, flap and film gauge are matched to the job, because a flimsy mailer can split in transit while an above-heavy one wastes material and storage space. A clean sealing flap makes packing quicker on the bench and gives a more proper closure than a rushed fold or a badly applied tape strip. Colour also has a practical side: bright bags can assist seasonal promotions stand out, while darker shades suit a more discreet dispatch line. When labels stick well and the stop stays flat, sorting transports faster and handling damage is less likely.

Large courier bags work optimal when the film is controlled properly, not only chosen for the proper size. A low-density polythene suppliers bag with proper gauge and decent puncture resistance will survive rough mixed loads, whereas a thin or uneven bag can split when cartons rub together in transit. Seal quality matters only as much, particularly on peel-and-seal strips that have to cope with dust, folded stock and fast hand movement at the packing bench. The bag should be light enough to retain posting costs down, nevertheless robust enough that the dispatch team can trust it on all consignment. A bag that behaves predictably saves time, reduces handling damage and retains the line moving.

Big mailing bags need to be judged first by how they behave below load, not by how much they can simply grasp. When mail arrives in dense bundles rather than loose envelopes, the bag beginnings to work like a part of handling equipment, and weak film shows up fast. A superb sack-grade polythene suppliers bag has to flex without splitting along fold lines, particularly where corners or card packs create pressure points. If the gauge is also light, tears spread; if it is also heavy, tare weight rises and pallet space is wasted. The smarter selection retains the load contained, carries smoothly through the chain, and avoids the sort of handling damage that slows an otherwise tidy intake.

MMF Canvas Security Mail Bags, Brown, 1 Each (Quantity)

Security mail bags work optimal when their building matches the handling they face rather than the appearance they present at the select-face. A tough canvas bag can survive scuffs, knocks and repeated use far better than a light mailer, nevertheless only if the weave is tight, the seams are sound and the closure grasps its grip after plenty cycles. Moisture uptake, tare weight and how the bag sits in a mixed consignment all affect daily efficiency, particularly when stock is moved through busy sortation areas. A well-manufactured bag reduces snagging, retains tamper evidence readable and avoids the false economy of constant replacement, so the warehouse acquires something that can be sealed, counted and returned without fuss.

Mailing bag types

A mailing bag is a polythene envelope used to send contents in the post, but the name covers a whole range of different products. Here are just a few of them:

Lightweight economy mailers - the original and (according to many) best mailing bag. A traditional polythene mailer with no bells or whistles - just a strong, waterproof and lightweight envelope that is very reasonably priced and perfect for you to send items to your clients or customers without breaking the bank.

Glossy blue mail order bags - the mailing bag that speaks business, these metallic blue mailers are guaranteed to give your company the edge and impress your customers. Popular with online traders and mail order companies alike, these mailers are strong and professional in appearance without costing the earth.

Extra tough mailing bags - for those occasions where you want a little bit of extra protection to the contents of your post, these heavy duty mailing bags are perfect for withstanding bumps, scrapes and bangs in transit. Don’t mess with the heavy mob - these mailers are strong, tough and ready to rumble!

Vibrant colourful mailing bags - when you want your mail to stand out from the crowd, what do you do? You send it in a radiant, eye-catching coloured mailer! Guaranteed to bring any package to life, these polythene mailers come in a range of vivid colours - including baby pink, eco green and vibrant purple - to brighten up your customers’ day!

High security mailing bags - if your mail requires an extra level of security then a range of high security mailers are available to give you added peace of mind. Extra thick opaque mailers - available in black or white - provide top secret content confidentiality, while tamper-evident mailers that show if someone has been interfering with your delivery.

Print your very own personalised mailing bags

Take your business to the next level with printed mailing bags personalised with your company logo or design.

This is an ideal way to promote your business as your mail is guaranteed to stand out from the crowd and you are reaching the consumer directly in their own home or office.

There are many ways that you can personalise your mailers - a simple logo, distinctive colour scheme or typeface, company catchphrase or advertising slogan, to name but a few - and ensure that your delivery doesn’t get lost in a pile of post, but really stands out from the crowd!

A firm favourite with retailers in the UK and all over the world, printed mailers have proved to strengthen brand identity and increase customer awareness, so make sure you take advantage of a simple way to give your business a boost.

How to use a mailing bag - 12 easy steps

  1. Consider the contents that you want to post and what kind of mailing bag they require (e.g. standard economy, high security, heavy duty or bubble-lined)
  2. Once you have chosen your type of mailing bag, consider what size mailing bag you need
  3. Look at the contents that you want to post and calculate (or estimate) their size: height, width and breadth
  4. Choose the size of mailing bag that is slightly bigger than the contents of your post
  5. Write the address on the outside of your chosen mailer (this is easier when the bag is flat than full!)
  6. Place your mailing bag on the table and the contents of your post alongside it
  7. Ensure the contents are aligned in the same direction as the mailer
  8. Open the mailing bag, taking care not to peel the label off the adhesive strip (yet!)
  9. Carefully place the contents in the bag, ensuring not to snag the side of the bag as you place them in
  10. Peel off the adhesive label
  11. Fold the flap over and seal the bag shut
  12. You’re done - ready to go to the post office or franking room to send your mail out on its merry way

Where to buy mailing bags

Mailing bag manufacturers and suppliers include:

Polythene Mailers
Polythene Mailers are specialists in polythene mailing bags, stocking a huge collection of waterproof mailers in a variety of styles, shapes and sizes and plain or printed with your own design. With free delivery to any UK address, this is the place to go for polythene mailers!
www.polythenemailers.co.uk

Mailing Bags
The UK's online home of mailing bags caters for all of your mailer needs. Check out their huge catalogue of mailing bags in every style from economy mailers to glossy blue mailorder bags. Also features a fantastic size guide so you know exactly what size mailing bag to buy.
www.mailingbags.co.uk

Mail Order Bags
The home of mail order bags - the lightweight, waterproof and tough plastic envelopes that provide the perfect way to send your mail. Select from a huge range from heavy duty postal bags to light jiffy bags.
www.mailorderbags.co.uk

Plastic Mailing Bags
Mailing Bags is a fantastic website selling a huge range of polythene mailers at very competitive prices. Order online from a range of clear and coloured mailers, with free delivery to any UK address.
www.mailingbags.co

Mailing Bag
Another great mailing bag website, which sells a huge range of bags and provides a comprehensive rundown of why mailing bags are the postal bag of choice for online retailers.
www.mailing-bags.co.uk

Buy Mailing Bags
Packed full of information on mailing bags - including a detailed description of each mailing bag type - along with a comprehensive list of where you can buy them, this is a serious mailing bag website.
www.buy-mailing-bags.co.uk

Plastic Envelopes
Discount Plastic Envelopes is a great source of information on mailing bags and plastic envelopes. Whatever type of mailing bag you need you can find out about it here, along with information on ISO envelope standards.
www.discountplasticenvelopes.com

Polythene Mailing Bags
Find out all about polythene mailing bags at this fantastic website, which tells you all about mailers and why you should use them. Also features a section on eco-friendly mailing bags for those people who want to keep an eye on the environment.
www.polythenemailersdirect.co.uk

Courier Bags
This website is the place to go to find out all about postal sacks, courier bags and polythene mailers. Featuring a great in-depth list of each type of polythene mailer to help you choose the right courier sack for you.
www.couriersacks.com

Bubble Mailers
Bubble mailers is home of bubble mailing bags. Featuring all you need to know on the lightweight, bubble-lined mailers used to protect delicate items, along with eco-friendly alternatives. Check it out today.
www.bubblemailers.org.uk

Mailing Envelopes
If you're trying to decide what sort of mailing envelope you need to meet your mailing needs, then Mailing Envelopes is the website for you. A great place to find out the right size of bag along with details on a range of mailing bags.
www.discountmailingenvelopes.com

Poly Mailers
A great website to buy and find out more about polythene mailing bags. Listing details of a range of poly mailers available, helping you choose the perfect bag for you before you buy.
www.polythene-mailers.co.uk

Cheap Mailing Bags
A treasure-trove of information for anyone looking to buy mailing bags. Containing all the information you need to know on any type of mailing bag and how to get the best discount prices, you need go no further than Discount Mailing Bags.
www.discountmailingbags.co.uk

Plastic Mailing Envelopes
Visit this website to find out more about mailing bags and where to buy them. Featuring loads of information on polythene and eco-friendly mailing bags and a range of other polythene packaging.
www.discountmailingenvelopes.co.uk

Plastic Mailing Bag
A great website for any organisation who posts out a range of stock and wants to do so in a professional manner. Mailing Bags Direct lists common applications for mailing bags, so that you pick the right bag for your company.
www.mailingbagsdirect.co.uk

Mail Order Bag
A great website if you're looking to buy, or simply find out more information about, mail order bags. With details of a range of mailers, from blue opaque mail order bags to high impact silver mailers, this site is mailorder bag heaven!
www.mailorder-bags.co.uk

What the internet says about mailing bags

Download Two Metallic Mailing Bags Mockup - Front View

Metallic mailing bags need controlled film structure, not only a bright surface, because a clever stop means very small if the bag will not dash properly in packing and dispatch. The base polythene suppliers has to assist clean feeding, proper folding and proper sealing, while the metallised layer must sit flat enough to avoid static and cling. If the gauge drifts or the laminate turns also stiff, bags beginning to misbehave on the line and in secondary packing. That soon shows up as poor seal quality, awkward stacking and less stable pallets. A well-set bag protects both presentation and handling.

Plastic envelopes with velcro give a fast closure, nevertheless the proper value lies in how they behave through repeated use and rough handling. A poly envelope with a hook-and-loop strip can be opened and closed far more times than a peel-and-seal wallet, so it suits select-face paperwork, returns processing, and internal movement where notes and cards are handled often. The hinge requirements enough film strength and a clean seal around the edges, otherwise the closure outlasts the body of the pouch and split corners soon become the weak point. That makes gauge selection and seal quality matter above the fastening itself, because a tidy closure is no assist if the envelope tears in transit.

bag manufacturers C3 Biodegradable Peel Seal polythene suppliers Envelopes x100 Review

polythene suppliers envelopes are chosen as much for handling performance as for appearance, because the film has to keep safe contents without slowing packing lines or fat storage. A biodegradable grade can suit a depot that wants lighter secondary packing waste, nevertheless it still requirements decent puncture resistance, proper seal quality and enough strength at the corners where split risks are highest. If the gauge is also light, mail sacks and tote boxes can stop up with damaged units before dispatch; if it is also heavy, material use and transit costs rise for no proper earn. The sensible selection is the one that balances protection, film clarity and practical handling on the shop floor.

packaging suppliers's Plastic Mailers May Not Be the Best Choice, Waste Experts Say

Plastic mailers create trouble because they behave like film, not paper, and that changes how they must be handled after use. If they are tipped into a paper recycling bin, they can wrap around screens and moving parts, much like carrier bags, which slows the line and adds sorting costs. The problem is not only the mailer itself either, because any paper address label or sticker still attached can contaminate the recycling route and stop the material being accepted. That leaves the pack looking simple at the front stop nevertheless awkward at the recovery stop, which is why disposal instructions matter as much as the bag specification.

Courier bags are often chosen because they give parcels a fast, tidy outer layer that stands up well in dispatch and handling. A superb bag retains mixed stock together, retains dust off, and makes consignment picking quicker when orders are moving through a busy warehouse. The better grades of polythene suppliers also assist avoid tearing at the seal or split corners if the load is packed neatly and the proper size is used. Where quantities are higher, it makes sense to check stock levels early, because delayed replenishment can grasp up despatch lines and upset daily select-face efficiency. The proper bag selection normally saves time at packing and reduces handling damage later.

Mailing Postal Bags

Postal bags are judged properly by how they survive handling, not by how tidy they see on a bench. A bag that closes cleanly nevertheless has weak seal integrity or poor film memory can split after a rough sortation dash, particularly when it is dragged across rollers, dropped into secondary packing, or crowded into a despatch tray. Gauge consistency matters because thin patches turn into pinholes, while a film that is also soft loses shape and invites adhesive creep. In warehouse terms, a lighter, better-controlled bag assists retain consignment weight down and makes pallet loads stack more neatly. That normally means less handling damage and less disputes when fragile or sensitive items change hands.

polythene suppliers mailers suit operations where speed, light weight, and simple pack-out matter above presentation. On a busy line, all gramme saved reduces lifting strain and trims the dead load carried through sorting, transport, and delivery, so the package spends less of its journey on packaging alone. The selection of film sets the all result: also thin and the mailer can split at the seal or tear on a corner, also heavy and it only wastes material and takes up additional space in storage and transit. A sensible gauge retains handling smooth and the dispatch area moving.

Grey Mailing Bags Strong Poly Postal Postage Post Mail Self Seal All Sizes Cheap Grey Mailing - £63.90

Mailing bags work optimal when the film, seal and size are matched to the consignment rather than chosen for price alone. A cost-effective grey polythene suppliers bag may see fine on the packing bench, nevertheless if the gauge is also light it can split at the corners, particularly when cartons or awkward-shaped products press against the side seam in transit. A decent self-seal strip also saves time at dispatch and gives a cleaner closure than tape, though only if the adhesive grabs properly on the bag surface. Get the balance proper and handling damage drops, dispatch runs tidier, and returns caused by poor packaging become less likely.

Large courier bags work optimal as improvised panniers when their material and seams can take rough handling as well as the load itself. A thin sack may see generous in size, nevertheless abrasion from rack fittings, repeated flexing, and sharp items inside soon expose weak welds or poor stitch lines. Heavy-gauge polythene suppliers laminates or woven polymer structures cope better because they spread stress and slow tear growth after a nick or scrape. The proper test is not only thickness nevertheless how the handles, gussets and closures are built, since those points see the most shock from kerbs and stops. A bag that grasps together below punishing use saves damage and avoids sudden failure on the road.

Big mailing bags need proper material control if they are to cope with mixed mail without splitting or becoming awkward on the line. A well-chosen polythene suppliers bag with the proper gauge will grasp its shape below load, yet still open and close sensibly when staff are filling or re-bagging trays of cards, envelopes and small parcels. If the film is also light, the neck stretches and tears amid handling; if it is also stiff, it becomes clumsy at the bench and slows packing. That balance matters because a bag that loads cleanly, travels well and stays intact saves time at all stage of the consignment.

Research & Resources

For more information on mailing bags and the different types available, plus details of how poly mailers are manufactured, please visit:

Goldstork: A free directory listing the best of the web, featuring carefully selected information on and websites specialising in mailing bags.

PlasticBags.uk.com: Free online directory specialising in polythene packaging. Contains useful articles and other resources, including a list of top mailing bags websites.

PackagingKnowledge: Read detailed information about mailing bags on this in-depth website dedicated to polythene packaging.