Mailing bags
Mailing-Bags.co.uk is a division of Polybags specialised in mailing packaging. Our range includes polythene mailers, courier sacks, postal boxes and padded envelopes. We also offer biodegradable mailorder bags and bio envelopes.
Mailing bags are manufactured having in mind what needs to be posted. Mailers can provide more than just safely transporting packages, from protection of goods with bubble mailers to promoting a company with custom printed polythene mailers.
Here we introduce a few popular choices for mailing bags, all available in different sizes and colours and we hope that you find the right mailer for you needs:
Economy mailers
Perhaps the most popular choice for economy mailers is the clear polythene mailing bags, made from strong polythene ideal for when posting large quantities of leaflets ,magazines, newsletters or any other kind of mailing in which clear packaging may be preferable. Economy mailing bags are very secure as this type of plastic wont tear easily. They may also be ordered with a self-seal strip or, for an even more economic mailing bag, just heat seal. Address labels can be attached or, if you prefer, you could use mailing bags with write on panels for addressing your packaging. If the type of mailing is confidential or if mailing a different type of product in which clear plastic mail bags might not work then we can also provide all the same features of a clear polythene mailer on a opaque mailing bag. We can offer many other options for mailing bags, available in coloured or plain plastic, so we are sure that you will find the right economy mailer for your needs.
Mailorder bags
Mailorder bags are used almost every day by companies to deliver online orders or to send brochures and marketing material. Mailorder bags are ideal for this type of posting as they are strong, tamper proof and water resistant, ensuring whatever is being mailed arrive safely and in the same condition as when it was posted.
Mailing sacks and Security mailers
Also known as courier sacks, mailing sacks are heavy duty postal bags designed to protect and delivery of products anywhere in the world. Mailing sacks are manufactured from strong co-extruded material, usually lined with bubble film or foam, to ensure the mailing bag can withstand transport and handling without damaging its contents. Security mailers are produced as a tamper evident, opaque black mailing sack made from strong and thick polythene to provide strong tear resistance and keeping its contents confidential.
Postal boxes and rigid mailers
Polythene mailers are good for when the material being posted is flexible if, however, you need to post a rigid item or don't want to crease important documents then rigid mailers can offer all a mailing bag can plus it wont bend or crease.
Jiffy bags and bubble mailers
An alternative to the more expensive postal boxes and rigid mailers is the padded envelope, commonly known as a 'Jiffy Style' envelope. Padded envelopes are manufactured with an inner layer of bubble wrap to protect against damage when posting fragile items. such as DVDs and Blue-Rays.
Biodegradable mailing bags
If you worry about the environment and believe polythene film is not the best choice, you will be pleased to know that we can also manufacture environmentally-friendly alternatives to polythene mailers without loosing any of the benefits and features of the plastic mailing bags. Biodegradable mailing bags are produce with a high performance, high clarity recyclable film and they are generally used to post brochures, magazines and catalogues. Bio mailers also offer substantial savings in postage as they are lighter than paper but waterproof and strong. Bags can be supplied as plain bags or with white write on panels and are available in a variety of standard stock sizes. These eco-friendly alternatives are definitely the way to go if you have any environmental concerns about the use of polythene mailers.
Coloured dispatch bags
If clear mailing bags don't match your style requirements or the standard blue mailorder bags wont pronounce the colours of you company then we can also offer a range of brightly coloured dispatch bags. Mailorder bags are available in baby pink, eco green, vibrant purple or the famous, best-seller glossy blue. If none of our standard colours don't go with your style please get us to call you as we can custom manufacture them for you, and if would like an extra personal touch we can also add your company's logo to your dispatch bags.
Custom mailing bags
Custom printed mailing bags could show a company's postal address, for business reply for instance, or have a printed postage impression, good for when you’re sending large quantities of mail. Companies could also have logos and sales messages printed on the mailing bag. Customisation does not only cover colours and printing, it also includes custom 'address viewing windows'.
Standard mailing bags and their properties:
- Clear polythene mailers and Economy mailers:
- Clear plastic front panel, allows for good visibility of contents.
- Expose catalogs and promotional mailing items.
- White plastic backing for labeling and postage.
- Optional pre-printed address window
- Mailing sacks and Security mailers:
- Easy opening perforated tear-strip .
- Lightweight, saves on postage.
- High strength seams allow over-stuffing.
- Ink, stamps and labels adhere easily.
- Water resistant.
- Tamper resistant.
- Tough, tear-proof polythene envelopes.
- Color Polythene Mailers or Opauqe Mail order bags:
- Your product will be opened immediately with these high gloss mailers.
- Attractive waterproof envelopes make mailing and promotions stand out.
- Long-side opening has peel-and-seal strip to make closure easy.
- Bubble mailers and padded envelopes:
- Tear proof and water resistant mailer ideal to protect delicate items.
- Bubble lining cushions and protects the insides.
- Smooth surface perfect for handwriting or labeling.
- Super lightweight mailers. Save on postage to nearly pay for the mailing bag.
What the internet says about mailing bags
Large Bubble Mailers
Bubble mailers are a practical selection when small products need protection without moving up to a corrugated box. The bubble lining cushions knocks and scuffs, while the outer poly film retains out moisture and handles the rough treatment that often happens on conveyour belts, in cages, and amid van loading. A big black version also gives a neater appearance and can conceal the contents better than a transparent or pale bag, which assists with sending clothing, accessories, or light hardware. The proper value comes from saving pack time and cutting secondary packaging, provided the seal is robust and the gauge is fit for the product.
Biodegradable mailers make refrigerated medicine dispatch easier to manage when the outer pack has to keep safe the products without creating lasting waste. The proper challenge is that chilled products need a mailer that can cope with condensation, short transit times, and careful stacking in the van or depot, while still fitting a recycling or composting route where the specification enables it. A weak pouch will split or soften at the gross moment, and that puts temperature control and seal integrity at risk. A properly chosen mailer assists retain the cool chain stable and makes the pack easier to handle at the point of delivery.
Padded Mailers Market - Global Industry Analysis and Opportunity Assessment, our telephone
Padded mailers have grown because they solve a simple packing problem: lightweight products need protection without the bulk of a box. In warehousing and despatch, that can mean faster picking, less corrugate used, and lower null occupy, particularly where small parts, cosmetics, books, or accessories transport through high-volume channels. The build matters as much as the format, because the outer paper or film, the bubble layer, and the seal all have to cope with handling, stacking, and transit knocks. If the gauge is also light or the closure unreliable, returns and damage costs rise fast. A well-chosen mailer retains packing lines moving and cuts waste at the same time.
Goldleaf Metallic Envelopes 5×7 Square Flap
Metallic envelopes need careful material selection because the shiny stop can see clever on the shelf nevertheless behave differently on the line and in the mail room. A 57 square flap format gives a tidy presentation for invitations and higher-stop mailings, yet the board or paper base still has to dash cleanly through folding, sealing, and packing equipment. If the coating is also heavy or the surface also slick, seals can be less proper and stacks may slip in transit. Good stock selection retains the appearance sharp without creating handling problems, which saves sorting time and reduces rejected packs.
Coloured mailers have to do much above see tidy on the despatch bench. The colour layer can affect opacity, scuff labels, static attraction and even how well a label stays put, so the specification requirements proper control rather than a casual change of shade. When the polythene suppliers blend is well judged, the film retains its seal line, resists edge splits and still runs cleanly through a busy packing area where parcels are being filled at pace. That steadier performance reduces handling damage, cuts stoppages and assists mixed stock transport through the line without constant rework. A sensible colour selection, matched to the proper gauge and material structure, makes the pack easier to handle and less likely to fail later in the chain.
Custom mailers give a business a better fit for fragile or awkward products because the pack can be matched to the product instead of forcing the product to suit a stock envelope. That normally means less movement in transit, less returns from handling damage, and a cleaner presentation when the consignment is opened. They also assist at the packing bench, where a mailer that folds and seals consistently can speed up dispatch without needing complicated skill from the operatour. When the sizing is proper, board or film waste drops also, which makes stock control easier and retains the pack room tidier. A superb custom mailer is not only about sees; it assists protection, speed, and a calmer warehouse workflow.
Printed mailers normally leave a warehouse much faster than custom versions because stock items can be picked, packed and despatched from existing inventory, while printed runs need artwork approval, pre-press, material booking and time on the converting line. A short lead time of a day or two makes sense when the mailer spec is already on the shelf, nevertheless a custom order can stretch into several weeks once print plates, colour matching and drying or curing time are added in. That gap matters in dispatch planning, particularly when client demand changes fast and cartons need to be filled without delay. Checking the lead time against the rest of the order avoids missed posting dates and awkward gaps in supply.
Economy mailers work optimal when cost-effective basic protection is matched to the job, rather than treated as a one-size reply for all consignment. For light, flat or non-fragile items, a simple mailer can cut material use, save pallet space, and speed up packing at the dispatch bench because there is less folding, sealing, and null occupy to manage. The trade-offs appear when the contents have edges, awkward shapes, or need a stronger seal, since a weak gauge or poor adhesive can lead to burst packs, returns, and additional handling damage. Choosing the proper size and stop retains secondary packing below control and avoids waste later.
Courier bags are broadly used for light products because they retain documents, garments and small accessories together without adding much weight to the consignment. The practical value lies in the method a well-manufactured bag assists fast packing and cleaner handling at dispatch, particularly where parcels are moving through several hands before delivery. Good raw material selection matters here, since a weak film can split on a sharp edge or amid rough sorting, while a sound gauge gives better puncture resistance and seal quality. For e-commerce and freight work alike, that balance cuts down damage complaints and wasted rework at the packing bench.
Clear mail order bags with an integral POD jacket occupy a deceptively technical corner of fulfilment packaging: the outer polythene suppliers body must be thin enough to retain tare weight down across high-volume consignments, yet stiff and puncture-resistant enough to survive conveyour transfers, cage decants and the habitual above-handling of mixed carrier networks. The permanent seal is not merely a convenience feature; it is a tamper-evident closure governed by adhesive wet-out, peel strength and the surface energy of the film, with poor melt-flow consistency fast showing up as seal lift or corner curl at the select-face. A transparent document pocket on the reverse mitigates the old nuisance of secondary bagging for waybills and consignment notes, keeping barcodes scannable while protecting paperwork from abrasion, moisture and mis-sorts caused by loose labels. At production level, micron-specific gauging matters because excess film thickness erodes volumetric efficiency on pallets, while below-gauging compromises burst performance when soft products are compressed in transit. The better buildings increasingly favour mono-material polythene suppliers, so the main bag and jacket do not frustrate recycling streams; that detail may sound modest, nevertheless across repeated replenishment cycles it affects feedstock recovery, amortised energy and the amount of downgraded waste returning from the warehouse floor.
Get 20% off black secure mailing bags this festive season
If you're looking for mailing bags, there's a fantastic festive offer over at our parent site Polybags.co.uk this Christmas. They are giving 20% off all orders on black secure mail sacks over £75. If you need top content confidentiality in your mailing bags then this is the bag for you.
Just apply voucher XMASMAIL16 and you'll get five strong opaque black mailing sacks for the price of four when you spend over £75. The offer is applied automatically to your basket. Please note there's strictly one voucher per customer and it's a limited time offer, so if you want to make the most of this Christmas bonus, then don't delay.
