Triangle Document Box Mailer

This smart take on old-fashioned mailing tubes lets you send your papers, blueprints or artwork out with the style and structure they deserve. Its heavy-duty structure is custom made to level up your brand appeal while providing greater stability and protection. And unlike a mailing tube, it will never roll away!

Eligible triangle document box mailers are digitally printed in 10-12 business days after final art approval.

Learn more about printing options including Litho and Flexo.

Not ready yet? Order a custom sample and apply its value to an order of $1,000 or more. 

    Starting at $4.25 /Unit $4,250  Total

    You will receive email instructions for sending in your design or having one sent to you if needed.

    "The boxes we had made by Box Genie turned out better than we could have imagined. Perfect for our products and loved by our customers."

    Zach F.
    Owner & Founder, Oak & Iron

    "The pricing is competitive and fair, but seriously it's the quality that makes all the difference, especially if your products require attention to detail. We highly recommend Box Genie for your packaging needs. "

    Sabrina L.
    Founder & Owner, Tuyo

    "The product boxes came out great with a nice tough finish to them. I will be using Box Genie from now on."

    David P.
    Owner, Bond Creek Knives

    "Excellent product! Quick production and great customer service."

    Andrew G.
    VP, BreakerOne9

    "My boxes are beautiful! I'm about to order some more boxes. I would recommend this company."

    Donna M.
    Norvanna Beauty

    "Awesome. The art guys were helpful making sure design was centered properly and sent a proof before printing. 👌"

    Scott N.
    Zombyz Toy Box


    This natural brown corrugated cardboard has an eco-conscious feel that holds dark colors well and provides a simple and modest aesthetic. Kraft material also has the highest recycled content of any material making it the most eco-friendly triangle mailing tube.

    Essential White

    Our essential white material is a cost-effective classic. This standard white board with a low shine offers a dependable canvas for showcasing any colors, logos, text or design elements and works very well for triangle mailing tubes.

    Magic White with High Definition Print

    For a one piece folder that’s clearly built to impress, select Magic White for your material and let our HD printers do the rest. This smooth and glossy board provides photo-quality prints you never thought possible on cardboard.

    Box Measurements: All measurements are done from the inside.

    Triangle Document Mailer Material is E flute.

    Printing Options

    Make your box look great from every angle with our two-side printing option. Or you can also keep things simple with one-sided printing.

    If you have your own design files ready to print, just open the design tools to download a die-line template matched to box type and size and upload to begin. BoxGenie will review our order, reach out with any questions, and quickly get your boxes printed.

    And you can always use our online design tools to choose patterns, colors and fonts that work for your brand.

    Please note that your choice of material greatly impacts your color vibrancy and printing precision. For darker colors over a natural brown, choose Kraft. To get a full spectrum of colors that pop, choose Essential White. For photo-quality images and the most premium look and feel, Magic White material gives you the HDPrint quality you need.

    You may cover your box with as many colors or designs as you like, all for the same cost.

    Best Practices & Help

    Here are a few tips from our design and product teams on designing your box:

    • Always convert to CMYK before uploading files as this allows tighter control over your colors and images.
    • All text should be at least 8-point in size and use bold colors made up of no more than one or two inks (C, M, Y or K).
    • Include at least a 0.25-inch bleed when graphics extend past die-line.
    • Lines in a solid or dark color should be no thinner than 1 point.
    • Download our templates here if you prefer to create your own box design from scratch.

    High Quality & Fast Delivery


    Two-Sided Printing

    Printed In-House

    Real Reviews From Real Customers

    Based on 3 reviews Write a review

    Deliver the highest quality possible with High Definition Print

    Never before has there been a faster and more cost effective way to get high-definition designs on your packaging. Simply select Magic White for your material and let our HD printers do the rest.

    • Picture perfect: Take your packaging graphics to the next level with tiny targeted ink dots designed for crisp imagery and text
    • Fast and precise colors: It takes just a single pass of the printer to bring any color combinations, gradients or hues to life with no swapping print plates to slow it all down
    • Luxe feel with a glossy finish: Our Magic White premium board feels smooth to the touch and provides the perfect canvas for your photo-quality graphics
    Learn more about packaging in our blog