The website for all your mailing bag needs

Mailing bags

Buy best value mailing bags now for a professional postage solution and strong, lightweight, waterproof protection.

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

Things people say about waste bags

Heavy Duty Black Sacks 25

Heavy duty black sacks are a better fit for rough waste streams because the thicker film copes with sharp edges, awkward offcuts, and damp debris that would quickly defeat a lighter sack. The additional gauge gives the material more resistance at the base and side seams, so broken banding, jagged plastic, and mixed waste are less likely to tear through amid lifting or dragging. That matters in busy back-of-house areas and on shop floors, where a split sack can mean spillages, additional cleaning, and lost time. A tougher sack retains the job moving when the waste is unpredictable.

Biodegradable bin liners need to survive the roughest part of the job before they can do any superb in the waste stream. Wet peelings, tea bags and the strange sharp container edge put proper strain on the film, so a weak gauge often splits at the top fold or seal line long before the bag is full. A liner that is also heavy can see reassuring, nevertheless it takes up more storage space and rarely fixes poor rim fit or inferior handling. The better selection is a film that grasps its shape, seals properly and copes with kitchen waste without turning into a origin of mess.

25 Extra Large Woven Polypropylene WPP Sacks Strong Rubble Bags Size 65 XL

A rubble bag has to be sized and built for the weight of broken brick, stone and sand, not only for the amount it can grasp. A 65 x 103 cm sack gives a useful fill volume, nevertheless the proper contrast comes from the weave and stitching, because dense waste puts far more strain on a sack than light packaging ever would. If the gauge is uneven or the seams are weak, a bag that sees fine in the yard can open up when lifted, stacked or shifted with forks. A sound specification reduces spillage and retains pallets stable.

Waste sacks need to be designed for rough, mixed loads, not only for light household waste. Wet grass, hedge cuttings and other garden waste can put far more strain on the film than a tidy binful, so the sack has to resist punctures and stretch without tearing at the seams. A consistent gauge assists retain strength predictable from batch to batch, while still keeping the pack light enough to transport and store efficiently. When the material selection is proper, less sacks split amid filling or lifting, and that saves mess, time and wasted stock at the point of use.

The Green waste Bags Tie Top Refuse Sacks 6x50s

A waste bag has to be judged by how it performs in use, not by the ticket price alone. A thin sack that bursts on the method to a bin creates additional work through spillages, double-bagging and time lost clearing a mess, so the apparent saving quickly disappears. Tie-top waste sacks normally cope better in daily handling because the neck closes fast, gives a firm grip and makes lifting simpler when waste is carried to compaction bins or kerbside containers. The proper gauge also matters, since a bag that matches the load is less likely to split at the seam or in the corner.

Refuse sacks have to do above grasp waste, because the gross gauge or poor film structure can split when a bin is dragged, overfilled, or dropped into a skip. A big spectrum gives distributours a better fit for mixed sites, from light office waste to heavier trade use, and the distinction between normal grades matters when sorting stock for call-off and repeat orders. Certification to recognised hygiene or performance standards also gives buyers confidence that the sack will behave as expected on the floor, not only in a brochure. That makes specification a practical stocking decision rather than a paper exercise.

Swing bin liners for light waste need to match the job properly, because thin, loose film can split easily while heavier gauge film only wastes material and space. A white liner on a roll suits daily light office or washroom use, where tidy dispensing and fast replacement matter above high load capacity. HDPE gives the bag enough stiffness to open cleanly, which assists when the liner has to sit in a swing bin without collapsing into the container. Since the material is not recycled nevertheless can be recycled, the clean, single-material route is better than pretending it will smash down in normal disposal.

See when your blue bin bags will be delivered in Wokingham borough

Coloured bin bags work optimal when they bring discipline to the all waste chain, not only a tidy see at the kerbside. A blue council-issued sack gives crews a fast visual check in poor light, cuts down arguments about what belongs where, and makes the load easier to manage once it reaches bulking and transport points. Black waste sacks create more problems because their gauge can be uneven, the film may have weak spots, and mixed-recycled polythene suppliers can behave unpredictably when the sack is knotted or dropped. When one splits below compaction, the wagon floor acquires messy, round times slip, and additional secondary bagging is needed. A controlled blue mono-material sack is simpler to handle, easier to identify, and less likely to cause waste and delay.

Black sacks are often the sensible reply where there is not enough space for rigid bins, nevertheless their success relies on how well the film copes with rough handling. A light sack can see fine on the roll and still fail below proper conditions, where it is dragged above paving, filled with awkward mixed waste and squeezed in a vehicle. The better grades use high-density polythene suppliers with a carefully controlled gauge, so puncture resistance stays high without adding unnecessary weight. That balance matters because a sack must transport waste cleanly through assortment without becoming wasteful itself. A superb specification retains the system workable when space rules out the more stable option.

Fife Council is cutting the number of food waste bags it delivers to households.

Three rolls of food waste bags a year is a fairly tight supply, so the packaging has to be simple, tidy and easy to count. With 25 bags on each roll, the stop user is left with a proper trickle rather than a fat stock, which makes sense where a small caddy is being topped up regularly. That kind of arrangement puts pressure on film gauge and winding quality, because thin bags need to separate cleanly without sticking or tearing on the perforation. Good roll packing also matters for dispatch and storage, since compact units reduce carton space and make issuing easier. A tidy pack with consistent bag count retains the all system predictable.

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

waste bags - fact or fiction?

Heavy Duty Black Sacks 90 Litres, Case of 200

Heavy duty black sacks cope well with waste that would defeat a lighter liner, particularly when the contents are sharp, uneven, or heavily loaded. A thicker gauge gives the bag more resistance against broken box corners, plastic offcuts, and rough kitchen waste, so there is less risk of a split between the bin and the assortment point. That matters on busy sites where a failed sack creates mess, slows labour, and can leave a trail for cleaning to sort out. The darker colour also assists conceal the contents, which suits front-of-house and back-of-house waste handling alike. A sack that survives the route properly saves time and retains the disposal point below control.

Biodegradable bin liners still need to handle like a normal shop-floor consumable, because a bag that clings, tears, or opens badly soon creates more mess than it saves. The proper challenge is balancing breakdown claims with practical strength, so the film has to retain its gauge proper enough to resist puncture from mixed food waste and awkward sharp edges. Side seals must stay sound, and the material requirements enough slip to pull cleanly from the wicket without dragging or bunching. If the liner cannot survive filling and lifting, the disposal story becomes meaningless at the point of use.

Rubble Bags (Sacks) 100 Pack

Rubble bags have to stand up to sharp, awkward waste because broken brick, mortar and tile fragments will quickly cut through a weak sack. A robust gauge assists prevent punctures and splitting when the bag is dragged across concrete, lifted into a skip or thrown into a van, which is where lighter sacks normally fail. The 50cm by 75cm size works well for small renovation jobs because it gives enough capacity for fat debris without becoming also heavy or awkward to transport. That balance matters on site, since a bag that is also small creates additional handling, while one that is also big becomes hard to transport securely.

Garden waste sacks

Garden waste sacks work properly when the material specification is matched to rough, wet, awkward contents rather than chosen on appearance alone. A sack that is also light will split at the bottom or stretch badly when dragged across a path, while one with the gross gauge can tear on thorny cuttings before it reaches the kerb. Practical tare weight also matters, because a bag that is also heavy adds needless strain for the person moving it and wastes payload once it is loaded. Good sacks stack more neatly, retain their shape, and survive the rough handling that comes with garden transparent-ups. That sort of simple strength retains spillage down and makes the job easier from filling to assortment.

Council waste bags

Rubbish bags need to be prepared for assortment at the proper time, because a bag left also late or also close the round can quickly become a mess for all else to deal with. Once a bag sits exposed on the pavement, it is more likely to be split by birds, knocked above by traffic, or opened by weather and stray handling. The proper job of the bag is containment until the lifting crew arrives, so placement matters as much as strength. Bags that are put out neatly, transparent of parked vehicles and foot traffic, stand a far better chance of being taken away cleanly.

Economy Black Refuse Sacks - 18" x 29" x 39" - Box Of 200

Refuse sacks have to do above simply grasp waste, because the gross grade or size can create sloppy loading, split bags, and additional handling in the yard. A thin sack may suit light office waste, nevertheless it will struggle with sharp offcuts, damp waste, or mixed content that puts strain on the seams. Gauging the film properly matters as much as the bag dimensions, since a sack that sees generous on paper can still fail if the fill pattern is awkward. Good stock control also assists, because the proper sack close the point of use cuts wasted movement and retains the waste stream tidy. When the specification matches the job, there is less mess and less complaints from the people clearing it.

Bin liners make the all waste cycle easier because they retain the inside of the bin clean and reduce the smell that comes from loose waste and liquid residue. That matters in kitchens, washrooms, workshops, and any back-of-house area where a dirty container quickly becomes a nuisance. A superb liner also assists retain flies away and cuts down on the scrubbing needed when bins are emptied. In practice, the benefit comes from simple pollution control: the bag takes the mess, the bin stays in better condition, and staff spend less time dealing with unpleasant cleaning jobs. A decent liner pays for itself in cleaner handling and less downtime.

A 2-yard skip works optimal where waste volumes are modest nevertheless the site still requirements proper control above bagged arisings. It will take the equivalent of around 25 to 30 bin bags without crowding a yard or leaving a much larger container half empty, which matters when access is tight and turnaround requirements to stay fast. The proper value lies in how it assists tidy segregation and retains loose material from spreading across the working area. When the bag stock is the proper gauge and resists splitting, loading stays cleaner and less time is lost double-bagging awkward waste. That makes the small skip a sensible match for short jobs and restricted sites.

The quality of black sacks determines how cleanly residual waste transports from the bin to assortment, because weak film quickly turns a simple lift into a spill job. A sack with poor puncture resistance will split where strange-shaped waste pushes against the side or where the knot is pulled tight, while a better polythene suppliers blend with proper gauge grasps together below rough handling and damp conditions. That matters at the kerbside, where crews need waste to stay contained and easy to lift, not leaking fines across the pavement. Good specification reduces breakages, retains odour down and makes the all assortment round dash with less mess.

Orange Clinical Waste bags 432mm x 660mm

Orange clinical waste bags in the 432mm x 660mm size are optimal judged on how they fit the waste stream they are meant for, not only on colour. In a clinical setting, the bag has to grasp waste securely, seal properly, and survive repeated handling without splitting at the seam or the mouth. Gauge selection matters here because a bag that feels fine on the roll can still fail once sharps containers, dressings, or awkward fat waste are dropped in. The proper format also assists staff retain segregation tidy at origin, which reduces pollution and makes downstream treatment easier. A bag that matches the job avoids waste, mess, and avoidable handling damage.

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.