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Letterbox Postal and Mailing Boxes

Our fully recyclable Mailer Boxes are perfect for your eco-conscious customers.

With customisable branding, messaging, and graphics on durable E-Flute material, your parcels arrive undamaged and make a lasting impression. Designed to fit standard UK letterboxes, our professional letterbox packaging ensures convenient delivery. Let your brand shine with SM1 Print Studio's custom Mailer Boxes, spreading your message far and wide.

Want to take your unboxing experience further? Be sure to check out our full range of Packaging Supplies.

3 styles available
Letterbox friendly
Large letter sizes available
Fully recyclable material

Uses: Retail and eCommerce packaging, gift boxes, press kits and more.

Top tip: Looking to minimise postage costs? Opt for one of our Royal Mail Large Letter friendly mailer boxes.

Artwork tip: Create patterns and shapes that extend across the entire surface area of the box for a seamless look.

Do you offer letterbox-friendly options?

Choose from our Royal Mail Large Letter Mailer Boxes, available in two sizes: 255 x 168 x 22mm or our 100 x 100 x 22mm box. They're perfect for hassle-free deliveries right through the letterbox!

Do you sell flower postal boxes?

When placing your order at SM1 Print Studio, simply select our 182 x 600 x 35mm capacity flower postal box, and your flowers will be protected and beautifully presented during transit.

I only require a small quantity?

We understand the importance of catering to all needs, big or small. You can order as few as five copies, so you get precisely what you need without any excess.

How sturdy are the boxes for postage?

Our Postal Boxes at SM1 Print Studio are top-notch when it comes to durability. We print them on White E-coated Fluted Boards, making them incredibly sturdy. Rest assured that your packages will stay safe and intact during transit.

Are they guaranteed to fit through a letterbox?

Absolutely! We design and manufacture all our postal boxes at SM1 Print Studio to fit through a standard UK letterbox. No need to worry about missed deliveries or having to rearrange - your parcels will slide right through the letterbox with ease!

Design and Creative Services

Discover the limitless creativity of SM1 Print Studio! Our team excels in graphic design, from captivating logos to comprehensive brand guidelines.

Whether it’s eye-catching Flyers or polished Brochures, no challenge is too big or small. Let us bring your vision to life with bespoke designs. Get ready to be amazed! Contact our friendly and dedicated team today to embark on an exhilarating design journey like never before.

Your ultimate creative experience awaits at SM1 Print Studio!

Have a question?

Get in touch with our handy support team, we can answer all of your questions!

Get In Touch

Choose Printing Options
Size Printed Sides Material Artwork Turnaround How quickly do you require your order? Artwork Versions Quantity Per Version Price £ Full Name* Company Email Address* Telephone* Do You Want Delivery? Yes No Additional Information Get Quote

Your Quote Summary
Product	Boxes & Packaging
	Postal Boxes
Size	600 x 182 x 35mm (Medium Parcel)
Printed Sides	Single Sided
Material	White Coated Boxboard
Artwork	I will supply Artwork
Turnaround	Standard
Artwork Versions	1
Quantity Per Version

      EXCELLENT  
   Based on 184 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Richard Stokoe 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service, fast turnaround and top quality always. Highly recommended.
  
 
      Posted on Google  
   
   Doug Shaw 
 
 
 
 Trustindex verifies that the original source of the review is Google. These guys are great - quick turnaround and tip top customer service. Friendly too - happy to recommend!!
  
 
      Posted on Google  
   
   Mylène Philippo 
 
 
 
 Trustindex verifies that the original source of the review is Google. SM1 Print Studio are absolute heroes. I found myself in a last-minute panic when our online print supplier failed to deliver some crucial branded materials for an upcoming event, without any notice. I urgently needed a solution, and the team at SM1 stepped in and saved the day. Not only was the turnaround incredibly fast, but they were also proactive, helpful, and genuinely committed to finding a way to get everything sorted despite the tight deadline. The quality of the print work was excellent, and their customer service was even better. What could have been a very stressful and costly situation turned into a success thanks to their flexibility, professionalism, and willingness to go the extra mile. I can’t recommend SM1 Print Studio highly enough. If you need reliable printing and exceptional service, they’re the team to call.
  
 
      Posted on Google  
   
   Dionne 
 
 
 
 Trustindex verifies that the original source of the review is Google. I can not recommend enough! We used them for wedding stationery and although it was estimated to be ready within 2 working days which is great, the turn around was the same day! Easy process and friendly staff, will be using them again in the future
  
 
      Posted on Google  
   
   Archie Sinclair 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional and their pricing is good. Will be using them in the future.
  
 
      Posted on Google  
   
   Maddie Wood 
 
 
 
 Trustindex verifies that the original source of the review is Google. SM1 Print are brilliant, they always help us with any requests we have (big or small!) and are so kind when doing so. Highly recommend for any printing jobs - they are always so high quality.
  
 
      Posted on Google  
   
   Utori 
 
 
 
 Trustindex verifies that the original source of the review is Google. Quite surprised with the turn around and quality of my orders. Even recycled options printing are stunning - Friendly and straightforward to the point. Happy with quality and results! Looking forward to working with them more!
  
 
      Posted on Google  
   
   Lucy 
 
 
 
 Trustindex verifies that the original source of the review is Google. We approached Sam and the team for help with my son's fundraising event. They went above and beyond and generously gifted the flyers which were printed extremely professionally and service was extremely quick. Thank you so much!
  
 
      Posted on Google  
   
   Natalie Elliott 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have used SM1 print for almost a year now for my business printing. Sam and the team are absolutely fantastic to work with. Jobs are turned around as fast as they can and the quality is superb. When I asked to see where we could save some money, Sam's advice was straightforward and helpful. Whenever I've had a question about a job, or queried a price, everything has been explained well (to add, I think the price point is extremely competitive and the service and quality is worth every penny). Overall, I would 100% recommend SM1 print studio, I'm always met with a smile and a friendly chat, which makes the service all the more personal.
  
 
      Posted on Google  
   
   Angelica Dinsart 
 
 
 
 Trustindex verifies that the original source of the review is Google. I ordered some coloured digital prints from SM1 Print, and there’s a reason they call their service Express Posters because it truly is lightning fast! I sent my files over on Monday and they were at my door the very next morning. Beyond the impressive turnaround time, the print quality and the vibrant colour were fantastic, all for a very reasonable price. The customer service was also top-notch throughout. Thanks again SM1 Print,

Letterbox Postal and Mailing Boxes

Our fully recyclable Mailer Boxes are perfect for your eco-conscious customers.

Design and Creative Services

Discover the limitless creativity of SM1 Print Studio! Our team excels in graphic design, from captivating logos to comprehensive brand guidelines.

Have a question?

Choose Printing Options