Mail bags

Buy now from a huge range of best value mail bags - the tough, light, waterproof polythene solution to all your mailing needs.

Mail bags are polythene envelopes used as an alternative to regular paper envelopes to send items in the post or by courier mail. Polythene mail bags, also known as mailing bags, plastic mailers or poly mail envelopes are an improvement on regular envelopes as they are strong, lightweight and waterproof, meaning greater protection for the contents they carry. Available in a range of colours, and with bubble-lined, heavy duty and security options, there is a mail bag out there for every mailing need.

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

What do the general public say about mail bags?

Welcome to the Printed Mailing Bags business to business directory. Here you will come by manufacturers, suppliers and distributours of Printed Mailing Bags, Bespoke bags, Bespoke polythene suppliers bags and Cardboard packaging around the UK.

Printed mailing bags need the proper film grade to match the pace of the packing line, not only the weight of the product going inside. A gauge that is also light can fail at the seal when bags are dropped into sacks, stacked on pallets, or squeezed amid transport, which soon turns into split consignments and complaints. A film that is also stiff causes a alternative problem, because it resists opening and slows the crew at the bench. The optimal spec is the one that gives proper strength without making the bag awkward to handle, and that normally means less stoppages and less damage.

Jiffy bags work well when small, light items need protection without adding much bulk to the pack. The padded lining takes the sting out of knocks in transit, so corners, seals and polished surfaces survive better through picking, bagging and sorting. Their slim shape also assists on a busy packing bench, where space is often tight and secondary packing has to stay simple. They are fast to handle, stack neatly in the dispatch area and retain the outward pack tidy enough for mixed consignments. That makes them a sensible selection for routine despatch work where speed matters as much as protection.

Biodegradable mailing bags can make sense for second-hand clothing because they reduce the burden of sending out lightweight parcels in plain polythene suppliers. For vintage garments, the bag requirements to survive folding, taping and a fair bit of sorting before it reaches the mail room, so tear resistance and seal quality matter as much as the green claim on the label. A bag that beginnings breaking down also quickly in storage would be a nuisance, while one that protects the item through dispatch still does the job. The practical win is simple: less plastic waste without risking damaged stock or avoidable returns.

6.5″ x 9″ Blue Mailing Bags – 165 x 230 mm

Blue mailing bags suit light, compact products because they give straightforward protection without adding much bulk to the package. The polyethylene film retains out rain, dust and handling grime, while the low gauge assists retain postage down and makes the bag easier to fold, stack and feed at a packing bench. An adhesive seal speeds up dispatch, particularly where secondary packing has to transport quickly and neatly. When the contents are clothing, books or other slim items, the bag trims wasted space and retains the package shape tidy, which reduces snagging and rough handling on the method through the system.

Lovely pink mailing bags- bolsas de mensajera con adhesivo fuerte para cosmticos

Pink mailing bags need a sensible balance of board-like stiffness in the film, a proper gauge and a flap that sticks properly, because a cosmetic order has to see tidy as well as survive the journey. If the material is also soft, the bag can crease badly around the corners, split at the seal line or beginning to peel open after a few knocks on the mail sort. That is the sort of failure that damages the client's first impression before the package is even opened. A well-chosen pink mailer protects the contents, grasps its shape on the bench and leaves dispatch with a tidy stop.

Metallic Mailing Bags C 5 Pink

Metallic mailing bags earn their place by how well they dash on the line, not by how clever they see on a shelf. A glossy stop means small if the film is also rigid, the gauge drifts across the reel, or the seal zone refuses to close cleanly at production speed. Co-extruded polythene suppliers normally handles better than a brittle laminate because it flexes without splitting and retains thickness more consistent through converting and use. That steadier build reduces weak points around corners and edges, so cartons and awkward contents are less likely to puncture the pack. Fewer burst failures mean less downtime and less scrap at the bagging stage.

Plastic envelopes are well suited to sealing sensitive items because the adhesive closure shows at once if anyone has tried to interfere with the contents. That matters when sending cash, contracts or other private papers, since a transparent tamper label is often more useful than a lock that can be defeated without leaving evidence. In production terms, the seal has to be consistent across the all edge, or weak spots will invite failure in transit. A decent mailer also requirements enough body to resist splitting at the corners when it is handled, stacked or shoved through sorting systems. When the seal is proper, the envelope does its job with small fuss.

Black Poly Mailers

Poly mailers suit lightweight ecommerce dispatch where speed, low pack weight, and decent weather protection matter above rigid presentation. A black outer stop gives a tidy, consistent see on mixed consignments, while the envelope format retains the pack flat and easy to print, sort, and stack. For a garment, accessory, or other low-risk item, that matters above heavy board or box strength. The main job is to keep safe against dust, scuffing, and light moisture without adding unnecessary bulk. When the gauge is chosen sensibly and the seal lines are clean, the packed article reaches the stop client in tidy condition and the carrier acquires a package that is easy to handle.

Custom Courier Bags

Clear-front courier bags speed up internal sorting because the contents can be checked at a glance without opening the bag or adding additional labels. That saves time at busy mail desks where docket IDs, route codes and top sheets need to be matched fast, particularly when mixed consignments are being built into cages or stillages before a cut-off. The trade-off is apparant: once a transparent panel is used, privacy drops away, so these bags suit visible paperwork rather than wage slips or confidential files. A stable polythene suppliers body with even gauge and sound welds handles repeated movement better, and the flat-pack format also assists stock rotation and pallet stability.

Grey Mailing Bags Strong Poly Postal Postage Post Mail Self Seal All Sizes Cheap Grey Mailing - £151.99

Mailing bags work optimal when the film is tuned for handling rather than simply manufactured thicker. A superb grey polythene suppliers mailer can be light on the scales yet still resist puncture, because gauge, polymer structure and seal quality matter above raw bulk. That assists in the despatch area, where lighter packs stack more neatly in cages, retain pallet loads steadier and avoid wasting space on dead weight. The opaque stop also serves a practical purpose by hiding contents and standing up better to scuffing amid sorting and transport. A mailer that balances strength, slip and adhesive performance normally causes less problems at the pack bench and less complaints later.

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.

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 mail bags

Clear Postal Bags

Postal bags work optimal when they make the contents easy to identify without sacrificing protection. Clear polythene suppliers lets picking staff and checkers see what is inside at a glance, which speeds up sortation and cuts out the wasteful habit of opening packs only to confirm the contents. That matters in busy despatch areas where all additional handling step adds time and raises the chance of scuffs, pollution, or a damaged seal. Film gauge has to suit the item and the route it will travel, because a bag that feels tidy on the packing bench can still split or craze in transit. The proper bag retains the product visible and the operation moving.

Part messenger, part tote, the Postal Bag is the quintessential carryall for gadgets galore.

A mailing bag works optimal when it is treated as a practical pack format rather than a simple mailing envelope. The material requirements enough strength to survive sorting belts, repeated handling, and the rough edges of mixed consignments without splitting at the seams. A well-manufactured bag also has to retain its shape amid filling, because poor film control or weak gauges can leave gussets leaning above and make packing slow. For dispatch teams, that means less reworks, less tape rescue, and better protection for products that are awkward, soft, or strange. If the bag is specified properly, it cuts handling damage and retains the package moving through the system.

Printed mailing bags have to balance emblem presentation with the hard realities of packing, sorting and transport. If the film gauge is also light, sharp corners, folded inserts and rushed bench handling can all cause splits before the consignment even leaves dispatch. Too heavy, and the bag becomes awkward to close, wastes material and can feel clumsy in production. The better selection is a film grade that grasps its shape, takes a clean seal and still runs smoothly on the packing line. That retains the pack tidy, speeds up fulfilment and cuts the risk of damage later.

Jiffy bags are often used for items that seem simple, nevertheless the proper test comes when they enter the mailing stream and are handled by machines, cages, and delivery rounds. A lightweight mailer still requirements a sound seal, decent puncture resistance, and edges that will not burst when pressed against other parcels. If the contents are documents, board-backed inserts or small retail parts, the bag has to keep safe against scuffing as well as impact. Mixed postmarks or relabelled packets can point to consolidation and onward dispatch, which means the mailer has already done more work than its size recommends. A superb bag survives that additional handling without opening up or losing the package inside.

Biodegradable mailing bags can reduce waste at the point where despatch meets disposal, nevertheless the proper value relies on how they are specified and handled. A bag that smashs down in the gross conditions, tears also easily, or loses strength in the store room soon creates more problems than it solves. Good mail pack selection still has to keep safe the garment, cope with picking and packing, and survive sorting through the carrier network without split seams or punctures. The practical test is simple: the pack must do its job in transit and still offer an easier route into recycling or biodegradation when it has finished its dash. That balance is what turns a green claim into a usable packing format.

Blue Mailing Bags

Blue mailing bags work well when dispatch speed and low carriage weight matter above a rigid box. The light polythene suppliers retains each consignment lean, which assists when parcels are being built quickly at a packing bench or passed through a busy despatch area. A self-seal flap with a tamper-evident strip cuts handling time and gives a transparent sign if the bag has been opened. Bright colour also makes mixed orders easier to sort and identify, so mistakes are less likely when stock is moving fast. That makes them a sensible fit for high-volume mailing work.

Pink mailing bags are a useful selection when fast identification matters as much as light package protection. A bright colour can separate one product line from another on a busy packing bench, which assists reduce picking slips and speeds up sorting when several orders are moving at once. The film still has to do the proper work, though, so gauge, seal quality and tear resistance matter far above the shade on the outside. If the bag is dragged, stacked or pushed through a cage and the seal fails, the colour does not compensate for the damage. That makes them optimal suited to low-risk consignments where presentation and handling speed both need to be kept in balance.

Download Two Metallic Mailing Bags Mockup Front View Yellowimages

Metallic mailing bags need proper gauge control because the film must grasp together properly, not only grasp the eye. A bag that is also heavy uses more resin than needed, feels fat in storage and eats into pallet space, while one that is also light can split at the corners when flat items transport about on conveyours or amid sorting. The film also has to retain enough stiffness for a clean seal and straight edges, or the pack beginnings to see limp and unreliable. A well-chosen grade retains the line running without constant adjustments and makes damaged returns less likely.

Sizzix Accessory - Plastic Envelopes 5" x 6 7/8" 3 Pack our telephone

Plastic envelopes give loose craft tools a proper home, and that matters because dies, embossing folders and cling labels are easily damaged when they rattle around in drawers or bags. A transparent sleeve lets the user see the contents at a glance, while a simple label stops sets being mixed up after a busy stint at the bench. The compact size also suits secondary packing, since several items can be stored together without wasting shelf space. For shop-floor handling, the value is straightforward: less scratching, less loss, and faster picking when a specific item is needed. Good storage normally sees plain, nevertheless it saves a lot of faff later.

Keyword Research: People who searched poly mailers also searched

Poly mailers work optimal when the print, film gauge and seal are all chosen with dispatch in mind, not only appearance. A mixed sample pack of patterned mailers can assist a packing team see how alternative designs sit on the same basic bag format, nevertheless the practical value lies in the handling performance. A self-seal strip saves time on the line, while a decent polythene suppliers blend resists scuffing in transit and retains light products clean. For e-commerce orders, those small earns reduce pack time and cut complaints about torn outer packs or poor presentation. A mailer that sees superb and closes properly tends to earn its retain in daily despatch.

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.