Custom printed corrugated mailer boxes engineered for postal and e-commerce protection
Self-locking corrugated mailer boxes printed with your branding — the packaging of choice for UK e-commerce and subscription brands. Strong enough to ship without tape, beautiful enough to feel like a gift.
What is a mailer box and why do e-commerce brands use them?
A mailer box is a self-locking corrugated box that folds together without glue or tape, designed to be shipped directly through the post. UK e-commerce and subscription brands use custom printed mailer boxes because they survive courier networks without extra outer packaging, and they turn every delivery into a branded unboxing moment that customers share and remember. At QPack, custom mailer boxes start from just 100 units — and because the setup cost is the same whether you order 100 or 1,000, many brands choose to order 1,000 straight away to get 10× the stock for almost the same price per unit. Standard production is 5–7 working days.
- Self-locking design — no tape or glue needed for assembly
- Corrugated E-flute board protects contents through UK courier networks
- Full-colour printing outside and inside for a premium unboxing
- Royal Mail letterbox-friendly sizes available for subscription products
Corrugated Mailers Engineered for Impact
Turn every delivery into a branded unboxing experience. High-strength E-flute board with edge-to-edge outside and inside full-colour printing.
The Right Mailer for Every Delivery
From letterbox-friendly slimline boxes to heavy-duty shippers — all fully branded, all made to order.
E-Commerce Mailers
The classic roll-end tuck-front box — sturdy, smart and perfect for online orders of every kind.
Subscription Boxes
Consistent, collectable branded boxes for monthly subscription services and product clubs.
Letterbox Boxes
Slimline mailers under 25mm deep that fit through a standard UK letterbox — no missed deliveries.
Luxury Mailers
Premium printed mailers with inside printing, tissue and inserts for high-end brands.
Heavy-Duty Shippers
Double-wall corrugated boxes for heavier or fragile products that need extra protection.
Box Inserts & Fitments
Custom-cut card or corrugated inserts that hold products securely and elevate presentation.
Printed Tissue & Extras
Branded tissue paper, stickers and thank-you cards to complete the unboxing experience.
Bulk / Wholesale
High-volume mailer production with serious cost-per-unit savings for growing brands.
Mailer Boxes Built for UK E-Commerce
Around a quarter of UK retail sales now happen online — and for an online brand, the box is the first physical touchpoint your customer has. We make mailers that arrive intact, look brilliant and get shared.
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 Mailer Box Pricing — Volume Discounts
All prices are per-unit estimates for standard full-colour CMYK print. Your exact price depends on final dimensions, board grade, and finish chosen. Request a free quote and we respond within 24 hours.
Minimum order: 100 units. Because setup cost is fixed, the price per unit at 100 is almost the same as at 1,000 — ordering 1,000 is by far the smartest starting point (10× more stock, barely more total cost). Real volume savings kick in at 2,500+.
📦 Small Mailer Boxes Most Ordered
Size range: 4×4×2 in to 6×4×2 in — ideal for jewellery, cosmetics, candles, and small subscription products.
📦 Standard & Medium Mailer Boxes E-Commerce Favourite
Size range: 7×5×2 in to 9×6×3 in — ideal for clothing, shoes, tech accessories, and gift sets.
📦 Large Mailer Boxes Subscription & Bulk
Size range: 10×8×4 in to 12×9×4 in — ideal for subscription boxes, multi-item orders, and retail replenishment.
No obligation · No setup fees · Reply within 24 hours
Common Questions About Mailer Boxes
Explore More Packaging Options
Ready to Upgrade Your Unboxing?
Get a free, no-obligation mailer box quote in under 24 hours. Tell us your product and quantity — we will recommend the right size, board and finish for your brand and postage budget.