Custom Printed PiP Boxes
Letterbox-Friendly Postal Packaging
Slimline corrugated postal boxes engineered to qualify for Royal Mail Large Letter rates. Cut UK shipping postage costs by over 50% while delivering a flawless, full-colour branded unboxing right through your customer’s letterbox.
What are PiP boxes and why are they essential for UK e-commerce?
PiP stands for "Pricing in Proportion" — a standard framework created by Royal Mail that calculates postage based on dimensions rather than just weight. A standard UK parcel costs upwards of £3.29 to ship, whereas a package qualifying as a Royal Mail Large Letter (maximum 353 × 250 × 25mm and up to 750g) costs as little as £1.55. QPack’s custom PiP boxes are precision-die-cut with an external depth strictly under 24mm, guaranteeing your shipments glide through standard UK letterboxes without missed deliveries, courier surcharge penalties, or Royal Mail re-categorisation fees. Starting from just 100 units with flat-pack storage and instant fold-up assembly.
- Strictly under 24mm depth — guarantees Royal Mail Large Letter postal qualification
- Saves up to £1.74 per package in UK delivery courier postage costs
- Fits through 99% of UK residential front door letterboxes — zero missed deliveries
- Ships completely flat-packed — stores compactly and pops together in 5 seconds with no tape needed
Slash Postage Costs Without Compromising Presentation
Deliver straight through your customer’s letterbox. No missed delivery cards, no courier depot queues — just beautiful branded packaging that arrives every time.
Engineered for UK Postal Savings
Precision-engineered sizes tailored to standard UK paper sizes, flat accessories, and compact retail products.
C6 PiP Box (Mini Postal)
160 × 110 × 20mm — Perfect for fine jewellery, enamel pins, keychains, phone cases, watches, and gift cards.
C5 PiP Box (A5 Letterbox)
220 × 160 × 20mm — Our most popular format. Ideal for skincare kits, A5 booklets, phone accessories, small cosmetics, and scarves.
C4 PiP Box (A4 Large Letter)
320 × 230 × 20mm — Fits folded apparel, T-shirts, lingerie, A4 art prints, calendars, documents, and subscription kits.
Mini Square PiP (C7 Size)
100 × 100 × 20mm — Ultra-compact postage saver for single stud earrings, rings, badges, sample cosmetics, and craft items.
Deep PiP Mailer (Max 24mm)
Custom width and length with maximum 24mm outer clearance — engineered for small books, games, and phone gadgets.
PiP with Custom Fitment
Internal die-cut card insert holding fragile items (bottles, compacts, flash drives) rigidly in place without increasing depth.
Why UK Online Sellers Choose QPack PiP Postal Boxes
Combining rigorous postal compliance with high-definition branding, our PiP boxes protect your margins and impress your customers.
From Idea to Delivery in 4 Simple Steps
Get a Quote
Tell us your size, quantity, material and finish. We'll come back with a competitive price — usually within 24 hours.
Approve Artwork
Send us your logo and artwork (or let our designers help). We'll send a free digital proof before anything goes to print.
Production
Your order is produced using eco-friendly inks and sustainably sourced materials, with quality checks at every stage.
Fast Delivery
Delivered anywhere in the UK within 5–7 working days from artwork sign-off. Pallet, courier or collection — your choice.
Custom PiP Postal Box Pricing — Volume Discounts
Estimated per-unit pricing for custom printed PiP postal boxes with full-colour outer print on premium white or kraft corrugated board.
Minimum order: 100 units. Delivered flat-packed. Production time: 5–7 working days from artwork approval. Fast UK nationwide shipping.
📮 C6 PiP Boxes (160 × 110 × 20mm) Jewellery & Accessories
Perfect for jewellery, watches, pins, phone cases, keychains, and small giftware.
📮 C5 PiP Boxes (220 × 160 × 20mm) Most Popular / E-Com
Ideal for cosmetics, skincare, A5 books, tech gadgets, supplements, and scarves.
📮 C4 PiP Boxes (320 × 230 × 20mm) A4 Apparel & Prints
Engineered for folded T-shirts, baby clothing, calendars, art prints, and literature.
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Frequently Asked Questions About PiP Boxes
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Ready to Cut Your UK Shipping Costs?
Get a free, instant PiP postal box quote within 24 hours. Tell us your product size and quantity — we will calculate your exact unit price and Royal Mail savings.