Letter Mailing to all Snowdonia National Park Residents

About the Snowdonia National Park Authority

The Snowdonia National Park Authority are responsible for protecting the natural beauty of Snowdonia National Park, whilst educating visitors on just what the park has to offer. The National Park covers a total of 823 square miles, making it Wales’ largest National Park. Home to over 26,000 residents, Snowdonia’s landscape is steeped with culture, history, and heritage, where the Welsh language is part of the day-to-day fabric of the area.

Detail of the Works Required

Central Mailing Services were lucky enough to be chosen to help the National Park Authority send a consultation letter to all residential units that are located within the parks area. With the data being split between two separate areas, both Gwynedd and Conwy.

The letter was printed over 3 and 4 sides of 90gsm A4 paper, folded to A5, then enclosing with a matching C5 window envelope. We then worked to sent out the letters via the most cost-effective economy postal service.

Our Solution

Data and Technology

Using data in key areas helped increase the ROI from the mailings for the authority. Our investments in software development and technology have enabled our clients to get the very best from their mailings. We worked closely with the authority on;

Data Cleansing and Suppression

We cleansed each mailing file before despatch, de-duping by household, flagging people who have moved or gone away, deceased records and carried out any needed address updates.

Direct Data Reporting

Our unique platform provides end delivery information back to our clients. Using the Royal Mail MailMark database, our software can pull reports for the authority to show the expected land date by Royal Mail.

Returns Management

Returns management is another tool we used to help the Authority, we offered the communications team the ability to track and manage any returned mail. Recording the record and building a suppression list to ensure on an ongoing basis we are not sending out records that will be sent back.


Managed by a certified JICMAIL accredited account manager, this gave the Communications team access to look at and understand all the data that is tracked and generated specifically for their Posted Mail campaign. 

Our Strength in Sustainability

Sustainability is of uttermost important to Central Mailing Services, sharing the National Park Authority’s commitment and ensuring we are as environmentally responsible as possible and always work to the goal to minimise environmental impact. As a business we are constantly reviewing our suppliers, processes, and equipment to ensure that we continue our journey to being close to net zero by 2028.

  1. Our production centre is A rated for energy efficiency. It features Smart LED lighting and heating, combining to provide a 23% energy saving. We recycle all paper, plastic, and card waste. In 2022 we recycled over 360 tons of Paper, 11 tons of plastic and 42 tons of card. We have in house ducting for paper waste with onsite compactors. All card and plastic waste is bailed and collected each week
  2. All of the inks used in main production are either vegetable or water based.
  3. We segment our postal work ensuring that road miles are reduced for every item sent.
  4. All polythene used is at least 30% recycled stock including pallet wrap.
  5. We have a staff cycle to work and car share policy.
  6. We have multiple EV charging stations at work and staff can charge their vehicles at cost rates. Solar Roof installation to be complete by end of 2024.
  7. We are ISO 14001 accredited and have a road map to get to Net Zero.
  8. All staff are trained on waste management and reduction.
  9. We work with the Local GBSLEP to achieve energy and emission savings, for example upgrading the Air compressors to more energy efficient units.
  10. We actively look to re-use all card packaging and pallets throughout the business.
  11. All waste is tracked and recorded, allowing for us to work to strict KPIs on reducing waste.
  12. We have a no idle policy in both yards for Commercial vehicles.

The Result and Value Added

We were able to save the National Park Authority time, money, and ensured the delivery of the project to a tight timescale. Our full service offering allowed for everything to be completed in-house, from data cleansing and suppression, through to printing, envelope enclosing and cost-effective distribution.

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