Black Mailing Boxes


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empty white and black mailing box
Self-Locking Mailing Box Black - Small
Self-Locking Mailing Box Black - Small
22cm x 16cm x 8cm *GST included
empty white and black medium mailing box
close white and black medium mailing box
Self-Locking Mailing Box Black - Medium
24cm x 19cm x 12cm *GST included
empty large black mailing box
close black mailing box
Self-Locking Mailing Box Black - Large
39cm x 28cm x 12cm *GST included
Self-Locking Mailing Box Black - Extra Large
Self-Locking Mailing Box Black - Extra Large
Self-Locking Mailing Box Black - Extra Large
44cm x 36cm x 9cm *GST included

What are Black Mailing Boxes?

Small businesses who want to stand out in the fast-paced eCommerce market choose black for their packaging. It creates mystery and intrigue about their products. This element of secrecy makes customers more curious about your business and makes them interested in buying from you.

Black mailing boxes help create a luxurious but cohesive brand image. A black cardboard box with a secure self-locking mechanism is a creative way to present your products while protecting them. 

The Advantages of Black Self-Locking Mailing Boxes

Professional Appearance

The clean and neat closure provided by self-locking boxes enhances the professional appearance of shipments, which can benefit business branding and customer satisfaction.

Space-Saving Design

These mailing boxes can be shipped and stored flat, saving valuable storage space and reducing shipping costs associated with bulkier packaging options.

Conveys Elegance

Businesses selling jewellery and beauty products often choose black boxes for their accessories because it elevates the unboxing experience. Fashion and beauty items emphasise their product’s value and build trust with their clients using packaging.

Provides a Sense of Exclusivity

Using black self-locking mailers for special editions or limited releases can enhance the sense of exclusivity. This strategy can boost the desirability of your products and encourage quicker purchases.


These boxes are typically made from sturdy materials, providing excellent protection for the items inside. Their robust construction helps to prevent damage during shipping.

Industry Expert Insights

Self-locking mailers have received attention in the shipping and packaging industry for their robust protection of items during transit. 

According to NEON's team, the primary appeal of self-locking mailers lies in their ability to ensure shipments arrive intact, thanks to their effective locking mechanism. This feature provides peace of mind to both senders and recipients, knowing that the contents are well-protected against potential damage.

FAQs About Black Self-locking Mailing Boxes

How much is the delivery fee in Sydney Metro?

We offer free delivery inside Sydney Metro with a minimum order of $100!

How does the self-locking mechanism work?

The specially designed tabs on the box lid fit snugly inside the front slots of the box. 

How can I improve the aesthetics of the self-locking mailing box?

We highly recommend using our acid-free tissue paper , kraft wrapping paper , or diamond protective hex wrap to enhance the visual presentation of your products while protecting them from dust or scratches. 

What sizes are available?

Our black self-locking mailers are available in four sizes - small, medium, large, and extra large. Please visit the product pages for specific measurements.

What are the self-locking mailing boxes made from?

Our self-locking mailers are made from sturdy single-wall B-flute cardboard. The cardboard is 3mm thick and FSC Certified , which means it’s responsibly sourced and recyclable.

Do I need tape to keep the boxes closed?

No, you do not need tape to keep the boxes closed; however, it is recommended that you add tape to prevent tampering with the mail. 

Are these mailing boxes suitable for eCommerce?

Yes, they are designed for eCommerce!

Can the mailing boxes fit premium magnetic gift boxes?

Yes, each self-locking mailer is designed to fit our premium magnetic gift boxes comfortably, making them perfect for premium hampers.

How are the boxes delivered?

The boxes are delivered flat-packed and are easy to assemble. You can watch the video for assembly instructions.

How thick is the cardboard?

The cardboard used for the mailers is single-wall B-flute cardboard, which is 3mm thick.

How can I contact you?

If you have any questions, please email us at or call us at 1300 531 930.