Biodegradable Mailer Boxes in Unbleached Kraft E-Flute

Printing on Brown Board

Kraft takes ink warmly. Black is deep, white prints as a soft cream unless laid twice, and brand colours sit a shade darker than on white. Most designs on this box use one colour on the lid and a line of text on one side, leaving the rest of the board bare. Two colours allow a brand colour plus black.

Inside print is part of the same pass and is the finish buyers come back for. A pattern, a thank-you line or a short note on the inside of the lid is the first thing the customer sees, and it costs very little because the blank is printed flat before folding. A white-top kraft liner is available if the artwork needs accurate colour on the outside face.

Embossing or debossing the logo presses it into the board with no ink at all. On a brown mailer it reads as premium without changing the material. For the way these finishes compare in photographs, see the boxes printed with your logo page, which shows one-colour, two-colour and debossed examples side by side.

Inserts and Protection

Fit does most of the protecting. A close-fitting mailer stops the product moving, which is where most transit damage starts. Where the contents are fragile or there are several items, a folded card platform cut from the same board holds everything in position and arrives flat inside the box.

Corrugated dividers split the box into cells for sets of jars or candles. A moulded pulp tray cradles glass. Kraft tissue, crinkle paper or paper void fill take up any remaining space. None of these add a second type of material to the parcel.

For heavy jars or bottles, use B flute and a pulp tray rather than E flute and more filler. The mailer boxes with fitted inserts page shows the platform, divider and tray styles with the measurements we need to make them.

Tape, Labels and Tissue

Because the lid locks, most orders need no tape. Where a seal is required, water-activated paper tape bonds to the kraft liner and tears with it, so it cannot be lifted and reapplied. We supply it plain or printed with your logo in a dispenser width.

Address labels on paper stock with a paper-friendly adhesive keep the outside of the box in one family of material. Thermal courier labels also stick well to the kraft liner. If you want the box reusable for returns, keep the address on a label rather than printing a panel on the lid.

Printed kraft tissue in the same artwork wraps the contents and makes the opening feel finished. The kraft tissue paper with your logo is printed one colour to match the box and shipped flat in the same consignment.

Who Orders This Mailer

Online clothing and accessory brands shipping single items. Skincare, candle and soap makers posting sets with a card platform. Independent bookshops and print sellers using the slim and book mailers. Subscription box businesses that want a plain brown box with a printed inside.

Jewellery and watch sellers order the small sizes with a debossed lid and a foam-free platform. Food producers use the medium mailer for jars and preserves with a pulp tray. Artists and stationers ship prints and cards in the slim postal mailer with a card stiffener.

Many of these buyers order a plain run for wholesale and a printed run for direct orders on the same dieline, so the packing bench learns one fold. For heavier or palletised goods, the shipping boxes with top flaps take over where the mailer stops.

Ordering and Delivery

Send the internal size, the style, the flute and the number of print colours, with a logo or artwork. We send a custom quote by email within one working day, listing the board grade, the ink and the closure. Minimums are low and set per job. One-colour mailers start from £0.25 on larger runs.

A free design proof shows the dieline and the folded box. Production takes 4–7 working days after approval and delivery is free and tracked to UK mainland addresses in 2–3 working days, flat-packed in outer cases. Misprints or damage reported within 10 days are reprinted or refunded. If you are not sure which style suits your product, the guide to choosing a box style compares the mailer styles with photographs.