Mailing and courier bags

mailing and courier bagsDesigned for postal or courier transport, mailing bags are light, waterproof and have an integral adhesive strip. Our stocked ranges cover economy and 'Tuff' mailers, mailorder and courier bags, tamper proof, bubble and even high impact metallic advertising mailers.

Need mailing bags?

For a range of high quality mail order bags, mailing envelopes, and all types of courier sacks please visit mailing bags and courier bags at, where you can buy online securely at discount prices.

Mail order bags are produced with a high quality film, designed to be lightweight but tuff. It offers excellent levels of resistance along with excellent opacity in order to keep your product safe, secure and dry through the harshest of delivery systems.

Ten things you didn't know about courier bags

Details about   Mailing Bags - PINK Postal sacks Plastic Envelopes Self Seal Post Bag


Shiny Metallic Bubble Mailing Bags

Shiny Metallic Bubble Mailing Bags in a spectrum of sizes & grades We are able to supply custom sizes, colours & printing (subject to minimum quantities) Prices exclude VAT

Yes, You Can Recycle Those Plastic Mailers

Over the past year, packaging suppliers began shipping a few of its packages in plastic mailers to clients worldwide, as alternatives to its carton box. This was meant to save space on shipping trucks and planes (and this plastic, overall, reduces greenhouse gas emissions according to a few experts ).

Postal Bags

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Courier Bags

We offer Tamper Proof Security Bags, Printed Courier Bags, Tamper Proof Courier Bags, Tear Resistant Courier Bags, Garment Courier Bags, Security Courier Bags, Bubble Envelope, Security Envelope and plenty more.

Bio: Sefton Transmail manufacture and supply a wide spectrum of mailing bags, poly bags, mailing envelopes and other packaging products. They are the UKs leading manufacturer of environmentally friendly mailing bags.

Plastic Envelopes Plastic envelopes are flat laying pouches or baggies that are normally manufactured with an adhesive edge for secure closure purposes. Used broadly in the mailing world to send a assortment of correspondence like magazines, brochures, catalogs and newspapers, plastic envelopes are an alternate option to shipping these items in rigid cartons or carton boxes , and are also known as poly mailers or poly mailer bags. The pouches can be one layer of plastic, or an outer layer of plastic with a protective interior layer like bubble-wrap. Within the mail application, plastic envelopes are particularly useful as a tamper-proof method of transporting contents like currency, legal documents or other private information for which the sender requires secure transportation. For short-term protective and mailing requirements, a permanent adhesive strip can be placed on one side of the plastic envelope, or plastic mailer. Once the permanent adhesive edge is sealed, the contents inside are protected until the envelope is torn open and ruined, at which point tampering is evident. This feature protects against contents being viewed or adjusted while in transit. Using a plastic envelope with a re-sealable side does not have the tamper-proof benefit, nevertheless rather it gives the option of opening and resealing the envelope several times and can be used for less confidential purposes. Plastic envelopes are typically manufactured from transparent polypropylene or polyethylene for visibility purposes, or white plastic for privacy purposes, and are used because of their durability. The lightweight properties of polyethylene or polypropylene make the plastic envelopes cheaper to mail, particularly above long distances, than heavier carton or corrugated boxes. Plastic is also more flexible than carton and so is able to be used to package a wide assortment of objects which can then be transported more efficiently due to saving shipping space. Paper envelopes are another commonly used postage container, nevertheless as plastic is more heavy-duty than paper, plastic envelopes are used to mail contents that require slightly more protection. Plastic is water resistant, providing further guard against damage from the elements amid transportation, and potentially saving money from potential product loss amid transport. The plastic pouches are typically manufactured through a process of co-extrusion, and so are also known as co-ex plastic mailers. Plastic envelopes can be left plain, or custom printed with a company emblem or description, or with a template for handwritten content information. Some companies may also offer labeling services, particularly for mailing purposes. Plastic Envelopes - Associated Bag Plastic Envelopes - Associated Bag Plastic Envelopes

Polybags& Padded Envelopes. Jiffy Mailers and padded envelopes represent the most perfect line of padded, non-padded and rigid protective media mailers. Save on shipping costs with Jiffy media mailers

All orders placed before 12pm will be delivered next day, orders placed after 12pm will be delivered on the next working day. For further details or to make special arrangements please email Polybags

The Postal Service signals its plans to the Postal Regulatory Commission, as it is required to transport out. This year, it said the coming 2018 increase was likely the last below the 2006 law that has kept postage rates relatively stable. For 2019, we have no view what to expect although we know several things. First, USPS thinks Periodicals publications are generally not covering their costs, as USPS handling costs have risen faster than inflation. Second, the cost of handling mailing sacks will proceed up. Third, we could see a significant restructuring of postage rates for newspapers overall because USPS is in financial trouble, Rowell said.

Types of bags

Economy mailers

economy mailersOur economy range for simple but effective protection - plain and coloured mailers plus the Mailite range with a pre-printed address window. The cheapest way to send literature to your customers and staff and much lighter than paper envelopes.

Discount mailing bags

For more information and a list of handy resources on mail-order envelope products such as plastic mailers and mailing bags, please visit the discount mailing bags website.

Heavy duty postal mailers

heavy duty postal mailersHeavy duty postal mailers are thicker opaque mailers in a strong co-extruded material where you need to be sure that the mailer can withstand some rough handling in transit.

Courier sacks

courier sacksMassively popular range of large and very large courier sacks with double seals - get a sample to see the tough quality!

Security mailers

security mailersSecurity mailers are extra thick (360 gauge) white opaque mailers with a Tamper Evident Sealing Strip. The welds have a side skirt as well to give extra security to the package - for that top secret document!

Jiffy mailers

jiffy mailersThe standard featherpost 'jiffy style' mailers are paper padded envelope with a self seal strip for closure. This range is bubble lined rather than pulp filled so whilst being padded to protect contents they are also very light.

Paper feel plastic envelopes

A plastic envelope with the feel of paper (but much stronger and waterproof of course).

More on packaging?

At you can find more information and articles on mailing bags and courier bags.

Visit our sister site for more on mailing bags

Mailing Bags specialist supplier of mailing bags, polythene mailers, courier bags and plastic envelopes. Offers discount ranges and high-impact ranges for all you mail-shot and postal packaging needs.

Get 20% off black mail order sacks this Christmas!

Black mail sacks ChristmasThere's a fantastic festive offer waiting for you over at, where you can get 20% off black high security mailing bags on all orders over £75. Black secure mail sacks are the perfect mailing bag for sending confidential documents. Their thick, opaque black polythene means you get confidentiality of contents and great bag strength for a sack that Santa could use for even his most secret presents! So shop now for your black mailing bags, making sure you apply the voucher XMASMAIL16 before you shop - this will automatically give you 20% off once you have £75 worth of black mail sacks in your shopping basket. There's strictly one voucher per customer and the offer is valid for a limited time only, so don't delay!