quick and easy
26 Jun 2025 | Harry R. | 
Verified Buyer
Verified Buyer
Mailer Boxes
New Low Price
Make every unboxing love at first sight with cardboard custom mailer boxes.
- 4 sizes available
- 1.8 mm white corrugated cardboard
- Vivid, full-colour printing
- Inside printing available
- Non-printed, plain boxes available
- Front-tuck or sealing tape closure options
Looking for standard, non-printed boxes? Have a look at our Custom Mailer Boxes.
Message-ready packaging
When it comes to making a strong impression with your packaging, presentation is everything — whether you’re an e-commerce business, event promoter or brick and mortar. Custom mailer boxes are a great way to excite customers the moment their package is delivered. By adding a unique design on the inside and outside of your custom mailer boxes, you can make a lasting impression on your customers and even have them share it with others.Easy to assemble & send
Available in 4 sizes and printed on white corrugated E-flute cardboard, our mailer boxes are sturdy enough to send small to mid-sized items without the need for additional packaging. The front-tuck opening can create an exciting unboxing moment for customers, while our double-sided tape lets them unseal their package in style.3D design experience
Ready to start creating? With our 3D design studio, we’ve made creating your postal box as easy and stress-free as possible. After uploading your logo or image, add custom details like backgrounds, patterns and templates to put together an eye-catching design (be sure to remove any dielines to prevent them from being printed). Once you're done, we’ll take care of the rest, professionally printing and shipping your order. Your cardboard postal boxes will arrive looking crisp, polished and ready to show off.Vistaprint offers Mailer Boxes design templates in assorted styles.
Reviews
Ratings Distribution
Reviewed by 13 customers
My go-to custom boxes! High quality, does not disappoint!
14 Jun 2025 | ANGELOUMAE B. | Verified Buyer
Verified BuyerVery good quality
8 May 2025 | Rafal A. | Verified Buyer
Verified BuyerVery good
24 Dec 2024 | Carl A. | Verified Buyer
Verified BuyerHighly recommend
6 Sept 2024 | Estela | Verified Buyer
Verified Buyer
Frequently asked questions
With our packaging design studio, you can turn your logo or image into a custom design. Upload your image file, then select from our range of themes, custom colours and industry templates to create your look. Remember to remove the dielines from your uploaded image, otherwise they will be printed along with your design. The 3D environment allows you to view your creation at any angle and apply updates in real time. Pro tip: for a more vibrant print, we recommend designs with darker tones or colours.
Yes, you can. You can create a design for the inside of your packaging by using our online editor. Or, if you prefer to work offline, download our postal box template.
Yes, if you would prefer unmarked packaging, you can check out our plain postal boxes. These are ideal for products that require discretion, and are a more cost-effective way to deliver your goods. Of course, if you don’t want them to be entirely plain, you can always add some roll labels to the packaging, or put some sticker singles inside.
The weight of each postal box varies by size. See below:
| Box Size (in centimetres) | Weight (in grams) |
|---|---|
| 15 x 12 x 5 cm | 46 g |
| 20 x 14 x 8 cm | 88 g |
| 23 x 23 x 8 cm | 138 g |
| 35 x 25 x 10 cm | 212 g |
When sealing your custom mailer boxes, you have two options; you can use tape, or you can order boxes with a double-sided tape sealing mechanism. If you prefer to use tape on the front-tuck closing postal boxes, we recommend our self-adhesive tape to show off your design. When packing, we recommend you overlap the tape and make sure the tape stretches several centimetres down either side of the box.
No, but our custom postal boxes will arrive pre-creased for easy assembly.
E Flute is very thin (1.8 mm) corrugated cardboard. It’s very easy to fold and is excellent for printing. Sturdy and crush-resistant, it’s a good option for posting parcels — though we do not recommend these postal boxes for very large or heavy items.
Custom postal boxes can hold up to a maximum of 25 kg in weight. To make sure the box can hold this weight safely, make sure to always properly secure it with tape and handle the box with care.
Our personalised mailing boxes are designed to create a branded experience when delivering your products or promotional items to your customers. The durable cardboard means you won’t need an outer box to protect your package, meaning your printed design will be the first thing the customer sees when they receive their order.