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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

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.

Plastic mailing bags retain their place because they are light, tough and efficient to store, not because they are fashionable. A superb polythene suppliers mailer can be manufactured thin enough to save material and pallet space while still resisting knocks, which matters when cartons and mixed consignments are being picked, counted and despatched at speed. The trouble beginnings when additional layers, labels and seal strips make the bag harder to sort after use, turning a simple item into a recycling problem. That is why selection of film grade matters so much: if the contents are smooth and normal, polythene suppliers gives clean seal quality and low tare weight, nevertheless it should not be treated as a default reply for all product.

Recycled mail bags work optimal when the material is chosen for how it behaves on the line, not only for the recycled content printed on the face. A sound mono-polythene suppliers structure with a proper gauge runs more cleanly through bagging and sealing equipment, which matters when despatch volumes rise and stoppages become costly in time rather than money alone. Stable film tension and consistent melt flow also assist the finished bag lie flat, so packs stack better and pallets travel with less movement. That gives better handling in the warehouse and less crushed or scuffed products on arrival.

Red mail bags work optimal when they are treated as a controlled part of internal distribution, not only another container for loose paperwork. Their bright colour assists them stand out in busy back-of-house areas where mixed stock, dispatch slips and select-face replenishment can otherwise bury necessary literature. The proper issue is often handling discipline: if bags are overfilled, snagged or left without a transparent route, they slip into the same clutter as normal secondary packing. A sensible gauge and sound seam strength assist them survive repeated sorting, while keeping tare weight low makes life easier in cages and on pallets. Used properly, they stay visible, transport cleanly through the sortation process and reduce the chance of materials going missing.

polythene suppliers mailing bags work well because the film gives a robust, light outer skin that retains products clean and private without adding much weight to the consignment. For mail order and ecommerce orders, that matters when postage is counted carefully and parcels pass through several handling points before delivery. A superb bag also requirements the proper gauge, because film that is also thin can split on corners, while film that is also heavy wastes material and takes up more storage space. White bags can conceal the contents and give a tidy presentation, making them useful for clothing, soft products and printed items. The practical earn is less transit problems and a better stop at dispatch.

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

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.

Security mail bags need to do above transport paper from one place to another, because the proper risk is interference amid transit and storage. A superb bag has to resist casual opening, display transparent signs if someone has tried, and retain contents together through handling by alternative staff and vehicles. Material selection matters here: the film or material must balance strength with enough flexibility for fast loading, while closures need to stay proper below repeated use. Weak seals, poor zip quality, or flimsy stitching invite trouble at the worst moment. A properly specified bag reduces disputes, assists chain-of-custody checks, and makes each handover easier to trust.

Plastic mailing bags are often chosen because they retain light products moving fast through packing, sorting, and dispatch without adding much weight or space. A cheaper sack may see fine at first, nevertheless thin gauge film can split on sharp corners, weak seals can fail in a busy despatch area, and poor opacity can leave contents more exposed than intended. Better bags normally give steadier film tension, cleaner seals, and less complaints from the receiving stop when sacks are handled by the thousand. The proper selection is not only price nevertheless how reliably the bag survives the journey from packing bench to mailstream, and that determines whether the saving is proper or false economy.

recycled mail bags, recycled mail bags Suppliers and

Recycled mail bags work optimal when the film is controlled properly, because recycled content alone does not guarantee a superb pack. The proper issue is whether the pouch retains enough puncture resistance, seal quality and slip from one batch to the next, particularly when hard-edged items press into the corners amid sorting and dispatch. Mono-polythene suppliers building normally makes more sense than mixed laminates because it runs more predictably on the line and leaves a cleaner waste stream after returns handling. When the gauge is held proper and pollution is kept low, the bags can transport through packing benches without snags or early splits, which saves rework and handling damage.

Red mail bags need to be handled as load-bearing accessories, not only bright extras that occupy space on a layout. Their low weight and hollow shape mean they can drift about in transit, acquire flattened by heavier moulded parts, or disappear into the strange corners of a warehouse carton. Packaging for them requirements enough restraint to grasp shape without crushing the material or scuffing the printed stop. A sensible pack plan also makes counting quicker at picking stage, which assists retain shortages and mis-shipments down.

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.