custom mailer boxes

Custom mailer boxes are sturdy folding boxes made to your size and printed with your branding, so a delivery arrives as a complete brand experience rather than a plain parcel. They combine a postal outer with a presentation inner, which makes them a natural choice for online shops, subscription services and gift sellers. When the size, board and print are chosen well, custom mailer boxes protect the contents, reduce wasted space and make opening the parcel feel intentional.

What makes custom mailer boxes different

A standard shipping carton is designed mainly to survive transit. A mailer box is designed to survive transit and to be opened with pleasure. It usually has a hinged lid, side walls that lock or tuck into place, and a clean exterior that can carry full colour print. That structure means the box can be packed quickly, closed without tape in many styles, and opened without a knife tearing through branding. The customer sees your design first, not a courier label on plain brown board.

Because the box is also the presentation, sizing becomes a branding decision as well as a practical one. A box that fits well looks considered, while a box that is far too large suggests waste and makes the product look lost. A snug fit also reduces the need for filling, which keeps packing simpler and the parcel lighter.

Styles that suit different products

Roll end mailer boxes have side walls that fold in and lock, giving a strong structure for heavier or repeated shipments. Tuck front mailer boxes have a front flap that tucks into the base, giving a clean front panel that suits bold print. Crash lock bases assemble quickly and suit high volume packing, while a simple self locking style suits small teams that need speed without extra tools. The best style depends on product weight, packing volume and how the customer should open the box.

Closure also affects returns and resealing. A tear strip gives a clear opening route and shows if a parcel has been opened, which suits subscription and gift orders. A peel and seal strip speeds up packing and gives a neat finish, while a tuck closure allows the box to be reopened and reused, which some customers value for storage.

Roll end boxes for everyday shipping

Roll end boxes are a workhorse for online retail because they balance strength, speed and print area. The rolled side walls add rigidity, the lid sits securely, and the large exterior panels give room for a logo, a pattern or a short message. They suit apparel, cosmetics, books, candles in tins, stationery and many subscription products, especially when the box will be handled several times before delivery.

Materials for custom mailer boxes

Kraft corrugated board has a natural brown appearance and suits brands that favour an honest, earthy look. White corrugated board gives a bright base that makes colours and photography appear vivid, and it suits premium and beauty brands. E flute corrugated board is fine and light, with a smooth print surface that suits detailed artwork, while B flute board is thicker and suits heavier items that need extra cushioning. Rigid board is a separate premium option for gifts and keepsakes, where structure and weight are part of the luxury feel.

Recycled content and recyclability are also practical considerations, not just marketing claims. A board that can be recycled through normal household recycling is easier for customers to dispose of responsibly, and a design that avoids unnecessary plastic lamination or mixed materials can make recycling simpler. If sustainability is central to your brand, discuss board, ink and finish choices at quote stage, because the final combination determines how easily the box can be recycled.

Print options inside and outside

Exterior print is the first impression, and it can range from a single colour logo on kraft to full colour artwork across every panel. Interior print is the second impression, and it is often where brands add a thank you message, a pattern or instructions that reward opening. Printing both sides costs more in specification than printing one side, but for subscription and gift brands the interior is frequently the part customers photograph and share.

Finishes change how print feels as well as how it looks. Matte lamination softens colour and reduces glare, gloss lamination adds shine and can protect print during handling, and spot gloss or foil can highlight a logo without covering the whole box. Use special finishes with restraint, because one well placed effect usually reads as more premium than several competing effects.

Choosing colours that print well

Test colours on the board you will actually use, because kraft absorbs ink differently from white board. Bold, simple colour blocks tend to reproduce reliably, while very pale tints and subtle gradients need careful proofing. If exact brand colour matching matters, share your brand colours early so the proof can be checked against them rather than against a screen image alone.

Sizes, quantities and ordering

Measure your product, add room for tissue or an insert, and choose the smallest box that still packs comfortably. Common mailer sizes suit books, apparel and small gift sets, but a custom size is often better than forcing a product into a standard box that leaves a large void. If you ship several product combinations, consider whether one flexible size with an insert serves you better than several separate box sizes, because fewer sizes simplify storage and ordering.

To start, browse the shop for the wider range, read the about us page for background on the business, and use the get a quote page to share dimensions and print ideas. Standard production after final artwork approval is 10 to 14 working days, corrugated boxes are 12 to 15 working days, and rigid or specialist boxes are 13 to 16 working days. The delivery information page explains timing and process in full.

Planning for growth and repeat orders

Keep your artwork files, board specification and box dimensions in one place, so a repeat order matches the first run. Note the finish, the print coverage and any insert details, because a small change in board or finish can alter colour and feel. If you plan a seasonal design, keep the structure and size the same and change only the artwork, which simplifies proofing and packing for your team.

Packing tips for a better arrival

Fold the box along its creases before packing, so the lid closes cleanly and the walls sit square. Place heavier items at the base, keep fragile items away from corners where impact is most likely, and use tissue or an insert rather than loose filling where presentation matters. A quick shake test before sealing will reveal movement that a customer would notice on opening.

Posting and packaging duties

Check the finished parcel against the Royal Mail small parcel guide before you book postage, because size and weight limits affect which service suits the parcel.

Checking duties that may apply to sellers

If you supply packaged goods in volume, read the GOV.UK guidance on extended producer responsibility for packaging to understand whether packaging duties apply to your business. That check is separate from box specification, but it helps you plan responsibly as order volume grows.

Frequently asked questions

What are custom mailer boxes?

They are folding postal boxes made to your size and printed with your branding, designed to protect products in transit and present them well on opening.

What is the difference between kraft and white mailer boxes?

Kraft board has a natural brown look and suits earthy brands, while white board gives a bright base that makes colours and photography appear more vivid.

Can I print on the inside of a mailer box?

Yes, interior print is widely used for welcome messages, patterns and care information, and it often creates the most memorable part of the unboxing.

What size mailer box should I choose?

Choose the smallest box that fits your product plus any tissue or insert comfortably, so the product does not move and the parcel does not carry unnecessary void space.

How long does production take after artwork approval?

Production timing after final artwork approval is 10 to 14 working days for standard boxes, 12 to 15 working days for corrugated boxes, and 13 to 16 working days for rigid or specialist boxes.