Design online
100% recyclable
Free UK delivery
![Floating 3D model of three custom mailer boxes.](https://cdn.sanity.io/images/9ebohwu7/develop/d78619fc46b01a366de2c0f255ccfe8357f1a257-1080x1080.png?w=600&q=100&auto=format)
![Custom branded mailer box.](https://cdn.sanity.io/images/9ebohwu7/develop/f369f880ebe1bfe5a13bf88c26e9ea33d6982f05-1080x1080.png?w=600&q=100&auto=format)
![Custom branded mailer box.](https://cdn.sanity.io/images/9ebohwu7/develop/fb16d34a517146ca4a24cde558c211e5ac14742c-1080x1080.png?w=600&q=100&auto=format)
![AI-generated 3D model of a dark grey branded mailer box.](https://cdn.sanity.io/images/9ebohwu7/develop/86c7c728bdc7e15b7ac19227be0e740e67aa89ad-3000x3016.png?w=600&q=100&auto=format)
![AI-generated 3D model of a white branded mailer box.](https://cdn.sanity.io/images/9ebohwu7/develop/0be9daf1a5076ccafa8c16e134e4666f7536aff2-1446x1444.png?w=600&q=100&auto=format)
![AI-generated 3D model of pink branded mailer box on a wooden table.](https://cdn.sanity.io/images/9ebohwu7/develop/9d02e47bd84e8b3e69a43b575f93ffcaf63b1bd0-3000x3000.png?w=600&q=100&auto=format)
![AI-generated 3D model of a brown custom mailer box.](https://cdn.sanity.io/images/9ebohwu7/develop/a56d410dabd6b221a383b7b1bb685d4a569fe8ad-942x1042.png?w=600&q=100&auto=format)
![Custom branded mailer box.](https://cdn.sanity.io/images/9ebohwu7/develop/b959d4b7ad488fdc37528a22c8771c66d343add2-1080x1080.png?w=600&q=100&auto=format)
![White mailer box opened with Fenton branding on the inside. Branding is colourful and includes a message saying "with love x". The mailer box also includes double peel & seal.](https://cdn.sanity.io/images/9ebohwu7/develop/116191140b8f02f25e1aefb0e0138ec6b8a7effb-1080x1080.png?w=600&q=100&auto=format)
Mailer Box
Minimum order quantity: 1000
Fully customisable, mailer boxes are ideal for shipping everything from clothing to cosmetics. They’re also FSC-certified and 100% recyclable, making them perfect for businesses looking for more sustainable packaging boxes. Extra features allow you to create a seamless unboxing experience.
- Custom sizing
- UV varnish
- FSC certified
- Inside: brown kraft
- Free UK delivery
- Outside print: 1 colour
Have questions? Contact us
Carbon footprint
See how the carbon footprint of our mailer boxes compare to a benchmark product.
![Carbon footprint comparison between an eco mailer box, a premium mailer box and a benchmark product.](https://cdn.sanity.io/images/9ebohwu7/develop/db27c5e75a406168e6410a4188323590f3208cab-1220x366.png?w=1200&q=100&auto=format)
Specification
![Emissions from an eco mailer box's materials. 73% of the total carbon footprint.](https://cdn.sanity.io/images/9ebohwu7/develop/633ab03f8b3566fe59e78ddd8a1e8790772afe7f-600x1116.png?w=800&q=100&auto=format)
- F0
FEFCO 0427
Quick to assemble, FEFCO 0427 has a wide, flat interior surface which is ideal for branding or creating a memorable unboxing experience. FEFCO 0427 is durable in transit with each sidewall constructed from two layers of cardboard, providing excellent crush resistance. - Bk
Brown kraft
FSC-certified, unbleached and uncoated paper made from virgin pulp. Brown kraft is the most sustainable material for these mailer boxes. - Wk
White kraft
FSC-certified, bleached paper made from recycled and virgin pulp. White kraft liner has a fibrous texture and a matte finish. - Wc
White coated
FSC certified, bleached paper made from recycled and virgin pulp. Coated with kaolin clay to create a smooth surface for printing with a shine.. - Bt
Brown testliner
FSC certified and made from 100% recycled fibres, brown testliner is a cost-effective paper used on any non-printed, brown side of a mailer box. This reduces its carbon footprint and cost. Testliner isn’t printed on as colours can appear muted and finer details can occasionally blur because of its high absorption rate. - Wt
White testliner
FSC certified and made from 100% recycled fibres, white testliner is a cost-effective paper used on any non-printed, white side of a mailer box. This reduces its carbon footprint and cost. Testliner isn’t printed on as colours can appear muted and finer details can occasionally blur because of its high absorption rate. - E
E-flute
E-Flute (1.5-2.0mm) is used for all Sourceful mailer boxes. It has great crush resistance for its weight, provides a flat surface for printing and is easy to fold. - Vi
Vegetable-based inks
Made with vegetable oils as their primary base, these inks are designed for high-quality offset printing. More sustainable than solvent-based inks. - Wd
Water-based dye inks
Made with water as their primary base, these inks are more sustainable than solvent-based inks. - Ws
Water-based sealant
Applied to every printed side of a mailer box. This is a standard part of the offset printing process to ensure colour consistency and avoid scuffing. Does not impact the recyclability of the box. - Uv
UV varnish
Used to highlight printed features or create a high gloss, professional finish over an entire print area. UV varnish also protects colours and reduces the risk of colours running when wet. Mailer boxes with a UV varnish are widely recyclable. - Sp
Single peel & seal
One strip of adhesive covered with a fibre-based backing paper. A single peel & seal makes fulfilment fast and helps make your packaging tamper-proof. Adding a peel & seal has minimal impact on your carbon footprint. - Dp
Double peel & seal
Two strips of adhesive covered with fibre-based backing paper. A double peel & seal makes fulfilment fast and returns easy for your customers.
Supply chain
A resilient, responsible supply chain