Custom mailer boxes
Custom Mailer Boxes for E-Commerce Orders, Subscription Packs, and Product Kits
Need a box that fits the packed order and still looks right when it reaches the customer? Forests develops paperboard and corrugated mailer boxes for e-commerce orders, subscription packs, apparel, samples, and product kits. Share the product, route, quantity, and artwork. We will work out the structure, print, and inserts before production.


Selling the solution
Solve the pack-out before you scale the order
A custom mailer box has to fit the packed product, protect it in transit, and arrive looking like your brand. A standard size often leaves too much room or not enough support.
Forests reviews product dimensions, packed weight, shipping route, board, closure, printing, and inserts before sampling. In a Cape Town e-commerce project, two sample rounds helped set an approximately 70% recycled-paperboard mix, a paper insert, and a self-locking bottom for long-distance delivery.
The box needs to fit the order
Custom size mailer boxes start with the fully packed product, including sleeves, inserts, dividers, and closing clearance.
The material needs to suit the route
Board, closure, and internal support are reviewed against product weight and handling conditions.
The delivery still needs to feel like the brand
Custom printed mailer boxes can carry a logo, brand colors, inside print, and a clear opening sequence.
The pack-out needs to work again
The approved sample gives repeat orders a clear reference for the box, inserts, artwork, and packing method.
Features and benefits
Choose the details that change the pack-out
With custom mailer boxes, each feature matters when it changes what happens at the packing bench, inside the parcel, or when the customer opens it. Forests reviews the size, board, closure, printing, and inserts as one pack-out.
Custom size mailer boxes
Set the internal dimensions from the fully packed product, then allow for sleeves, inserts, dividers, protection, and closing clearance.
Board for the shipping route
Paperboard and corrugated structures can be reviewed against packed weight, stacking, compression, and delivery conditions.
Custom printed mailing box
Use outside or inside artwork, logo placement, brand colors, and selected finishes. Print area and surface direction can be checked during sampling.
Inserts for product kits
Paper inserts, dividers, and product-fit supports help organise subscription packs, sample sets, PR shipments, and other custom mailer box kits.


Why choose Forests
Why choose Forests for custom mailer boxes?
For a mailer box, the difference is whether the approved design still fits, closes, ships, and can be reordered without surprises. Forests develops the box around the packed product and the way it will be used.
Designed around the packed order
We set the internal size with the product, sleeve, insert, divider, and closing clearance in mind, rather than starting from a catalogue size.
Checked with a physical sample
Fit, folding, closure, print, and pack-out can be reviewed before the bulk run, while changes are still practical.
Box, print, and inserts in one brief
Paperboard or corrugated board, inside or outside print, finishes, dividers, and product-fit inserts can be reviewed together.
Clearer repeat production
The approved dieline, artwork, materials, packing method, and inspection points give future orders a usable reference.
Gallery
Mailer box formats, print, and closure details
Use the gallery as a starting point. The examples show different custom mailer boxes, printed surfaces, and closure details. Final dimensions and materials depend on the packed order.

The final recommendation depends on the product, packed dimensions, board requirement, artwork, and delivery route.
Applications and industries
Where custom mailer boxes fit the order
Custom mailer boxes work well when the product needs a structured outer pack and the delivery is part of the customer experience. Choose the application that best matches the way your product is packed and received.

E-commerce and DTC orders
Use custom mailer boxes for repeatable pick-and-pack workflows, direct shipping, and branded delivery.
View e-commerce applications
Gift and campaign packs
Plan the box, insert, and opening sequence for launches, gifting, PR shipments, and seasonal programmes.
View gift applications
Apparel, samples, and product kits
Keep garments, accessories, samples, or several product pieces together with inserts or dividers.
View fashion applicationsCustomer testimonials
What buyers checked before approving the order
“We sent a packed sample, not only the product size. That made it easier to see where the insert needed to move before we approved the run.”Maya Thompson · United States
FAQ
Custom mailer box questions before you order
How do I choose the right size for custom mailer boxes?
Start with the product as it will be packed, including sleeves, inserts, dividers, and closing clearance. Forests reviews the actual pack-out instead of selecting a size from a standard catalogue.
What board or structure should I use for e-commerce shipping?
Paperboard and corrugated mailer boxes suit different products and delivery conditions. Forests reviews packed weight, stacking, handling, and product protection before recommending the box structure.
Can you make custom mailer boxes with a logo and inside print?
Yes. The box can include outside or inside artwork, logo placement, brand colors, and selected finishes. These details are checked together with the box structure and insert layout during sampling.
Can you make sustainable mailer boxes with recycled paperboard?
Material options depend on the product, shipping route, and target market. In a Cape Town personal-care project, Forests developed a mailer box using approximately 70% recycled paperboard, a paper insert, and no plastic filler or extra sealing tape.
Can I approve a physical sample before the bulk order?
Yes. A physical sample can be used to check the box dimensions, folding, closure, print, insert position, and packed product before bulk production. This helps settle the pack-out before the order is scaled.
Have a mailer box project to review?
Send the product type, packed dimensions, quantity, material preference, artwork status, target market, shipping destination, and deadline. Forests can then review the right structure and sampling route.
Send Your Packaging Brief to Our Team
Share your product type, format, size, quantity, material, destination, and required date. Our team can support artwork review, sampling, production, inspection, and export coordination.
Contact us for a project-specific recommendation.
Ready to build packaging with a factory team?
Send your product size, material, artwork, quantity, destination, and deadline so our team can focus the first review on quotation and sampling.