Secure Mailer – Returnable

Includes an extra self-sealing tape strip for secure and effortless returns.

  • Available in 3 standard sizes
  • 2 tape strips for resealing
  • no tape or glue needed
  • SUPER SEAL TAPE available
  • easy to assemble
  • extra secure

The Returnable Secure Mailer is here to uncomplicate your life. Custom printed, with one tape strip for closure after packing and a second tape strip for a secure return – this is efficiency at its best! Then add CompanyBox Super Seal tape for an extra strong closure.


White, Premium White or Kraft

Printing Options

Luxe or Standard

Printing Sides

Inside Only, Outside Only or Two-sided

Board Type


One Way Sizes

6 x 6 x 2 in

12 x 9 x 4 in

9 x 6 x 3 in

9 x 6 x 3 in

9 x 6 x 3 in

Returnable Sizes

6 x 6 x 3.5 in

12 x 9 x 4 in

9 x 6 x 3.5 in

9 x 6 x 3 in

9 x 6 x 3 in

how do I use the box builder?

Check out our quick video! We’re always happy to help talk you through it – just give us a ring.

Do you have custom design services?

Absolutely! We have a fantastic team of structural and graphic designers who can bring your vision to life. Hourly design charges apply, with a minimum of one hour dedicated per project. Call or email us to discuss your ideas!

Download our Art Guidelines for everything you need to ensure your custom cardboard boxes turn out exactly as you’ve planned. And remember we’re here to help! Contact us with any questions.

Quick tips:

  • Always convert to CMYK before uploading files – this allows tighter control over your colors and images.
  • Obtain rich blacks with this build: 30% Cyan (C), 30% Magenta (M), 30% Yellow (Y) and 100% Black (K). Finish it off with a 0.5-point stroke of 100% Black (K) for best quality.
  • Submit graphics and text designs (any non-photographic content) as vector-based PDFs or Adobe Illustrator (.ai) files to ensure lines and text are crisp.
  • All text should be at least 8 point and bold colors, made up of one or two inks only (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.
  • Make sure all fonts are embedded or outlined.
  • When possible, save your designs using the Adobe PDF/X-1a precept.

Download our template and design with even more control using Adobe Illustrator, Photoshop or CorelDRAW.

Two stacked ear-lock mailer boxes on a tan background. The top box is open slightly and reveals the inside pattern and words 'piece of cake.''

Whether you need one Secure Mailer or 12,000, ordering with CompanyBox is easy. Once your design is complete, simply choose a quantity and add it to your cart. You’ll receive a proof within two business days of ordering; at this time. Once we receive proof approval, your order goes to production.

All orders are produced and shipped out within 10 days* of approval. Transit time is generally 3 – 5 business days, depending on your location. (Ordering only one box? We skip the proof and ship it out within just 3-5 business days!) *Due to the COVID pandemic we are currently working at a 10-15 business day turn-around.

Pricing is completely transparent, with no hidden fees. As you create your custom packaging products, the price updates in real-time and includes printing, cutting and gluing, if needed. Shipping costs can be seen once your order is in your cart.

How much is shipping?

Shipping rates are calculated based on the size and weight of your order, as well as your location. We work directly with FedEx to ensure you receive top quality service and pricing. We also offer freight shipping based on size and volume.

Do you offer rush shipping?

We do offer expedited services. Call for a quote to discuss lead times.

How can I get in touch with someone about my order?

We’re here for you! You can email us, use our online chat feature or call us at 877.926.3223.

Can’t Find What You Need?

Give us a call at 877.926.3223
or send us a message.

See It to Believe It.

Get started with a sample
CompanyBox mailer.