Post-friendly Letterbox boxes | Custom or Plain

Our range of letterbox boxes are designed to fit through door mail slots and meet Royal Mail's postage sizes.

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A cardboard mailing box with black print. Perfect for a minimalist and eco-friendly look.

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More letter boxes

Available in 14 sizes

Min. 30 pieces

Mailing box for brands that care about sustainability.

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Available in 2 sizes

Min. 30 pieces

A rigid, printed envelope. Ideal for shipping flat items like documents..

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Min. 1500 pieces

Padded envelopes with custom sizing, colours and branding.

Customize it

Available in 14 sizes

Min. 30 pieces

Eco mailer boxes with colourful prints on whitened cardboard.

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Available in 14 sizes

Min. 30 pieces

Corrugated boxes with the most vivid prints.

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Available in 12 sizes

Min. 30 pieces

Cardboard mailer box with a printed sleeve.

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Available in 14 sizes

Min. 30 pieces

A simple cardboard box made for shipping.

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Available in 4 sizes

Min. 30 pieces

A cardboard delivery box with adhesive strips.

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Min. 1500 pieces

Easy-fold mailers with custom prints & securing flaps

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Our letterbox boxes are crafted using high-quality corrugated cardboard, ensuring durability and protection for your products.

Yes, Packhelp offers eco-friendly letterbox box options, made from recyclable and biodegradable materials, aligning with our commitment to sustainability. Ask our team about FSC certifications.

Certainly! Packhelp offers sample packs, allowing you to assess the quality and design before committing to a larger order.

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Protective packaging Rectangle gift boxes recyclable packaging Retail packaging shipping boxes Shoe boxes Small cardboard boxes Soap packaging Square cardboard boxes Watch boxes Wax Melt Packaging welcome packs White cardboard boxes

Letterbox boxes for a reliable & fun packaging experience

Why not choose our letterbox boxes over traditional padded envelopes for a more secure and branded delivery? Here’s why letterbox boxes – boy, that’s fun to say out loud, is a smart value packaging.

✓ Our letterbox boxes are designed with efficiency in mind, using minimal material, which not only reduces waste but also cuts down on your packaging expenses

✓ They’re easy and fun to design in our Design Studio;

✓ Letterbox boxes are a safer alternative to regular envelopes that will slot through the letterbox;

✓ They’re eco-aware, come with various sustainable qualities & due to their small size, contribute to reducing your business’s carbon emissions;

✓ Letterbox boxes are easy to brand & fun to unbox!

Cardboard post boxes for ecommerce

If you’re an ecommerce brand that relies on your national postal service to deliver your products, you need a cardboard post box that fits into your local letterbox. That’s why they’re sometimes called envelope boxes or PIP boxes. By doing this, you’ll lower your packaging costs for both you and your customer.

Whether you need large bespoke letter postal boxes or a simple cardboard post box with your brand’s logo, Packhelp’s range of custom envelope boxes are robust, durable and printed to the highest quality.

Customised letterbox friendly boxes

With Packhelp’s intuitive online designer, you can tailor your cardboard post boxes to your exact preferences. Drag and drop your logo and create your envelope boxes to perfectly match the rest of your branding. Then, have your letterbox postal boxes printed in full colour, white, or the natural kraft texture of cardboard. Full colour, brown and white options mean that the perfect blank canvas for your project is ready and waiting for you. Design your letterbox boxes exactly how you want them to leave a great first impression on your recipients.

Do you own an Etsy shop? Minimise your costs with letterbox boxes

Do you run your business from home or a small atelier? Storing packaging might be a problem, so why not start your order with just 30 pcs? Delivered flat-packed, our letterbox boxes ensure damage-free transport and space-saving storage. Our letterbox boxes are excellent for Etsy shop owners, and we would like to give you a chance to save from everywhere you can!

Royal Mail-friendly packaging

As Europe’s leader of custom packaging solutions, you can find a wide range of cardboard post boxes and envelope boxes for whatever you may need. Make the most of custom packaging design for Royal Mail Large Letter postal boxes and Small Parcel boxes! You can find all about the standard sizing of your letterbox boxes here.

Standard size cardboard post boxes

Packhelp’s range of letterbox boxes fit a standard size of ‘small parcel’ guidelines for Royal Mail, Deutchepost and many other European mail services. If you’re sending products via the mail and need custom packaging to meet a universal size, Packhelp has the ideal cardboard post boxes and envelope boxes you need. Design a custom Royal Mail Large Letter Box or Small parcel box, keep your packaging costs down and save money!

More than just a box

The letterbox packaging we offer is not just a mere box; it’s a reflection of your brand’s commitment to quality, safety, and aesthetics. Our range of cardboard post boxes and envelope boxes is designed to make sure that your product arrives at its destination safely and in style. Our corrugated cardboard letterbox boxes make sure that your product won’t get damaged in transit, but they still echo your business’s branding and visual imagery.

Free delivery in the UK and EU when you spend over €300/£300

Using Packhelp, you can not only design your high-quality yet cheap envelope boxes, but they’ll be delivered to your UK or EU address for free when you spend over €300/£300, and within 14 days. With minimum orders of just 30 pieces, you can design your own envelope boxes without investing a fortune. Design and order your letterbox postal boxes with Packhelp now!

Letter boxes

ECO / ECO WHITE MAILER BOX

More letter boxes

Eco / Eco White Mailer Box

Custom Cardboard Envelope

Padded Envelope

Eco Colour Mailer Box

Full Colour Mailer Box

Sleeved Mailer Box

Plain Mailer Box

Plain Delivery Box

Book Mailer

What materials are used in your letterbox boxes?

Are there eco-friendly letterbox box options available?

Can I get a sample before placing a bulk order?

Shop by needs

Letterbox boxes for a reliable & fun packaging experience

Cardboard post boxes for ecommerce

Customised letterbox friendly boxes

Do you own an Etsy shop? Minimise your costs with letterbox boxes

Royal Mail-friendly packaging

Standard size cardboard post boxes

More than just a box

Free delivery in the UK and EU when you spend over €300/£300

Letter boxes

ECO / ECO WHITE MAILER BOX

More letter boxes

Eco / Eco White Mailer Box

Custom Cardboard Envelope

Padded Envelope

Eco Colour Mailer Box

Full Colour Mailer Box

Sleeved Mailer Box

Plain Mailer Box

Plain Delivery Box

Book Mailer

Subscribe to get 5% off all products!

What materials are used in your letterbox boxes?

Are there eco-friendly letterbox box options available?

Can I get a sample before placing a bulk order?

Shop by needs

Letterbox boxes for a reliable & fun packaging experience

Cardboard post boxes for ecommerce

Customised letterbox friendly boxes

Do you own an Etsy shop? Minimise your costs with letterbox boxes

Royal Mail-friendly packaging

Standard size cardboard post boxes

More than just a box

Free delivery in the UK and EU when you spend over €300/£300