Custom
Mailer Boxes
That Wow On Arrival
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 50 units with standard 5–7 day production.
- 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
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.
Get a quoteSubscription Boxes
Consistent, collectable branded boxes for monthly subscription services and product clubs.
Get a quoteLetterbox Boxes
Slimline mailers under 25mm deep that fit through a standard UK letterbox — no missed deliveries.
Get a quoteLuxury Mailers
Premium printed mailers with inside printing, tissue and inserts for high-end brands.
Get a quoteHeavy-Duty Shippers
Double-wall corrugated boxes for heavier or fragile products that need extra protection.
Get a quoteBox Inserts & Fitments
Custom-cut card or corrugated inserts that hold products securely and elevate presentation.
Get a quotePrinted Tissue & Extras
Branded tissue paper, stickers and thank-you cards to complete the unboxing experience.
Get a quoteBulk / Wholesale
High-volume mailer production with serious cost-per-unit savings for growing brands.
Get a quoteMailer 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.
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.