Direct Mail Systems has everything you need to create innovative and unique mailing packs with our one piece mailers service.
What are One Piece Mailers?
One piece mailers are self-contained direct mail items that do not require an envelope, such as postcards or folded and sealed or glued mailers. They combine the message and packaging into a single piece, making them a cost-effective, efficient way to deliver clear, impactful marketing messages directly to recipients.
What We Offer
At Direct Mail Services, we have the expertise to create everything you need for your one piece mailer direct mail campaign. We can finish a variety of media, from small format one piece mailers and paper wrapping, to cover flap gluing.
Folded & Glued Mail Packs
We have a large range of folding machines and equipment to create a range of glued mail packs and door distribution leaflets.
Historically, glued mail pieces have been an expensive option restricted to large volume runs, however, this isn't always true and you maybe surprised at what can be achieved. Speak to our knowledgable team about what you want to achieve and we'll work with you too find a solution to fit your budget.
Buckle Folders
We also offer buckle folders, a type of paper folding method used in printing and direct mail, using a buckle folding machine. We install these with hot melt glue systems, ideal for creating DL, 4pp and 6pp small format pockets for your one piece mailers.
We also have vacuum tables, equipment for finishing and mailing, allowing us to effectively and efficiently carry out tasks such as collating, inserting, picking, or assembling mail packs, with plow fold and inline hot melt glue.
Paper Wrapping
We can insert up to 5 items into a paper wrapped pack, and is a great way of wrapping catalogues. This is a more creative approach to paper wrapping than the ugly finish a paper wrap machine (converted poly wrap machine) can produce, as the variety of paper and finishes are unlimited. You are also not tied to buying the wrap from the mailing house and we can also add personalisation with our laser printer, inkjet or by digital press.
Planning on Mailing Postcards?
If you're planning on sending postcards in your direct mail campaign, maybe consider a one piece mailer - it could be more cost-effective!
Royal Mail Wholesale have introduced new rules meaning standard single-ply postcards no longer qualify for economy postage discounts. To remain eligible, postcards must now be produced as 2–3 ply, adding approximately 2p per item to your mailing costs.
Currently, a folded and glued Mailmark mailer, such as a 4pp or 6pp format, is proving a more cost-effective alternative. These mailers continue to qualify for economy discounts while giving you more space for content and a more distinctive, engaging mail pack.
Available Mailmark Formats- 4pp Mailmark-compatible mailers
- 6pp Mailmark-compatible mailers
- Options with 40mm flap sealing
- Loose inserts can be included
- Internal peelable cards available
- Custom shapes
- Catalogue cover flap sealing
Benefits of One Piece Mailers
Cost-Effective
No envelope is needed, reducing material costs and postage expenses while keeping campaigns efficient.
Quick and Efficient
Being self-contained, one-piece mailers are faster to produce, process, and dispatch, making them ideal for high-volume campaigns.
High Impact & Visibility
The design and message are immediately visible to recipients, helping your marketing stand out and engage the audience effectively.
How One Piece Mailers Work
Once you've confirmed your design, a mailing house will print and produce your one piece mailers using their high-quality equipment. Once ready, they'll handle the folding, sealing, and addressing, ensuring each mailer is fully prepared for postal delivery - all without the need for envelopes. This streamlined process makes production faster, reduces costs, and ensures your message reaches recipients clearly and effectively.
FAQs on One Piece Mailers
Can you create Mailmark compatible one piece mailers?
Yes, we can either glue or pattern (dot) glue on all three edges of the mailer to ensure they're Royal Mail compliant Mailmark packs.
Can one-piece mailers be personalised?
Yes! One-piece mailers can include personalised messaging, names, QR codes, or unique offers to increase engagement and response rates.
Are one-piece mailers cost-effective?
Yes. Eliminating envelopes reduces material and postage costs, making them a highly efficient option for high-volume campaigns.
Can one-piece mailers include multiple inserts?
Some designs allow for loose inserts or small attachments, though they must be compatible with the self-contained format to maintain one-piece mailer status. Speak to the team for more information.
What sizes and formats are available for one-piece mailers?
They come in a variety of sizes, folds, and formats, including postcards, Z-fold, C-fold, gatefold, and folded & glued mailers.
Why Use DMS For One Piece Mailers
Direct Mail Systems is a trusted and experienced mailing house, specialising in one-piece mailers such as postcards and folded, self-contained mailers. Our flexible approach and fast turnaround capabilities ensure we can meet tight deadlines while keeping your campaign running smoothly.
Using industry-leading equipment, we produce high-quality one-piece mailers at cost-effective prices, consistently exceeding client expectations. Trusted by some of the UK’s leading brands, we also provide expert guidance on designing and executing direct mail campaigns that maximise engagement and deliver measurable results.
Next Steps
If your are looking to implement one piece mailings for your next direct mail campaign and stand out from the competition, speak to the Direct Mail Systems team today. We’ll answer any of your questions and can offer you a free, no-obligation quotation.
Simply call us on 0117 934 1600 or contact us online by clicking here.

