For small businesses
Postal boxes for small business
For a small business, the postal box is where two of your biggest costs meet: postage and damage. Buy a box that's too big and you pay for air and pad it out; too flimsy and you eat returns. This page is about choosing boxes that keep both down as you scale.
We stock letterbox-friendly and small-parcel boxes, and source custom or branded sizes to order. Start with small pack sizes online, then move to a bulk quote or trade account once you know your regular sizes — no minimum to get going.
Shop the range
Postal Boxes
Die-cut mailing boxes and PiP boxes for ecommerce despatch.
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Mailing Bags
Poly and paper mailing bags for clothing and soft goods.
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Packing Tape
Polypropylene and paper tape, plain and printed.
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Void Fill
Paper, loose fill and air cushions to fill empty space.
View categoryA small seller's box starter set
Most small sellers do the bulk of their posting with two or three box sizes plus a mailing bag for soft goods. Nail those and packing gets faster and cheaper.
- One shallow Large-Letter-friendly box for small, flat items
- One small-parcel box for boxed or bulkier products
- A mailing bag for anything soft and non-fragile
- Void fill so nothing rattles, and a strong tape
Popular in this range
PiP Large Letter Postal Box — A5
Royal Mail Large Letter box, folds flat, 25mm deep.
Single-Wall Mailer Box — Medium
Die-cut ecommerce mailer, easy fold, self-lock base.
Custom Printed Mailer Box
Branded mailer boxes printed to your artwork.
Grey Mailing Bags — Medium
Co-extruded grey poly mailer with self-seal strip.
Related buyer guides
Before you order, check
- The internal size fits your product with room for protection
- The pack quantity matches how fast you get through them
- Postage banding — will it post as a Large Letter or a parcel?
- Whether you need a stronger grade for weight or transit
- If a recyclable or plastic-free option suits your customers
Stocked, or sourced to order
We hold the fast-moving lines and source the rest through our UK supplier network — so you get one honest point of contact whether an item is on the shelf or made to order. We don't claim stock or delivery speed we can't meet.
Stocked lines
Core products we hold and despatch in listed pack sizes. Buy online at trade pricing.
Supplier network
Custom sizes, printed and specialist lines sourced to order. Priced per order, with a lead time confirmed up front.
New lines
Products being added to the range. Leave your email and we'll tell you the moment they land.
Common buyer questions
What packaging do I need for ecommerce orders?
A box or mailing bag sized to the product, void fill or bubble wrap so nothing moves, plus tape and a courier label. Right-sizing keeps postage and damage down.
Can you supply plastic-free packaging?
Yes — paper mailers, kraft void fill, paper gummed tape and compostable food packaging. We keep eco claims specific and accurate.
Which boxes fit Royal Mail Large Letter?
Boxes within 353 × 250 × 25mm post as a Large Letter. Our PiP postal boxes are cut to sit inside those limits so you pay the cheaper rate.
What is the best void fill for fragile items?
Pair cushioning (bubble wrap) around the item with void fill (kraft paper or air cushions) to stop movement. Fill any gap larger than about 3cm.
Frequently asked questions
Can I buy postal boxes in small quantities to start?
How many box sizes do I actually need?
Should I get branded boxes as a small business?
Buying in volume? Get trade pricing.
Tell us what you need — sizes, quantities and how often. We'll send pricing and lead time, and source anything we don't stock through our supplier network.
