Australia's Largest Range of Mailing Boxes

Australia's Largest Range
of Mailing Boxes

Choose from over 700 mailing box sizes — self-locking die-cut mailers, self-sealing boxes, white and kraft options — with wholesale pricing, optional custom printing and fast Australia-wide delivery.

Shop Mailing Boxes Find Your Size

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700+ Mailing Box SizesAustralia's Largest Range

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Self-Locking DesignsNo tape required on most styles

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Custom Printing AvailableFrom just 25 units

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100% Recyclable CardboardFSC-certified materials

Shop by Mailing Box Type

Mailing BoxesBrowse 700+ Sizes

📬 Australia Post CompatibleStandard parcel sizes

📦 Self Sealing BoxesPeel & seal — no tape needed

📦 White Mailing BoxesClean premium presentation

🖤 Black Mailing BoxesBold premium finish

📚 Book & Media MailersFlat-pack postal mailers

📦 Heavy Duty MailersDouble wall corrugated

📐 Multi Crease BoxesA5, A4, A3, A2 & A1

📮 Mailing TubesPosters, prints & artwork

🎨 Custom Printed MailersBrand your box from 25 units

💰 Value Buy MailersBudget-friendly options

Find Your Size

Know what you need?
Filter by size.

Use the filters on the left to narrow down by length, width and height. With 100+ mailing box sizes, the right fit is here.

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the Right Mailing Box?

Tell us what you're sending and our team will recommend the right size and style for your product. We respond within 1 business day.

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Shop Our Mailing Box Range

Browse Australia's largest range of mailing boxes, including self-locking die-cut mailers, self-sealing boxes, Australia Post compatible mailers, white and kraft mailing boxes, available with optional custom printing and wholesale pricing.

Australia's Largest Range of Mailing Boxes

PackQueen offers Australia's largest online range of mailing boxes, with over 100 sizes of die-cut mailers, self-sealing postage boxes, Australia Post compatible boxes, and custom printed mailers. From small ecommerce parcels to subscription boxes and media mailers, we make it easy to find the right postage box for almost any product.

With wholesale pricing, fast Australia-wide delivery from our Melbourne warehouse, and low minimum orders from 25 units on most products, PackQueen is trusted by over 90,000 Australian businesses.

Types of Mailing Boxes We Stock

We stock the widest range of mailer boxes available online in Australia, covering every ecommerce and retail packaging need:

Die-Cut Mailing Boxes: Self-locking die-cut mailers that fold flat for storage and assemble in seconds — no tape required. Available in 100+ sizes for ecommerce, subscription boxes, and retail dispatch.

Self Sealing Boxes: Peel-and-seal mailing boxes with a built-in adhesive strip for fast, secure closure. Perfect for high-volume ecommerce businesses that need to pack and dispatch quickly.

Custom Printed Mailers: Brand your mailing boxes with full colour digital printing from just 25 units. Create a memorable unboxing experience for your customers.

Australia Post Boxes: Mailing boxes compatible with Australia Post size requirements. Available in standard parcel sizes for easy lodgement at Australia Post outlets.

Long Mailing Tubes: Corrugated postal tubes for safely shipping posters, prints, blueprints, artwork, and documents.

Book & Media Boxes: Flat-pack twist-lock mailers designed specifically for books, DVDs, vinyl records, and media products.

Multi Crease Boxes: One box, multiple sizes. Available in A5, A4, A3, A2, and A1 formats — perfect for businesses shipping products of varying sizes.

Heavy Duty Mailers: Double wall corrugated mailing boxes for heavier or fragile products that need extra protection in transit.

Value Buy Mailers: Budget-friendly mailing boxes for businesses looking to reduce packaging costs without compromising on quality.

All our cardboard mailing boxes are made from recycled and recyclable corrugated cardboard — fully kerbside recyclable and manufactured using FSC-certified materials.

What Are Mailing Boxes?

Mailing boxes (also called mailer boxes, postage boxes, or ecommerce boxes) are corrugated cardboard boxes designed specifically for posting and shipping products. Unlike standard cardboard cartons, mailing boxes are engineered to fold flat for storage, assemble quickly, and lock securely without tape in most styles.

They're the packaging of choice for ecommerce businesses, online retailers, subscription box companies, and anyone dispatching products through Australia Post or courier services. PackQueen stocks over 100 standard mailing box sizes — more than any other online packaging supplier in Australia.

Self-Locking vs Self-Sealing Mailing Boxes — What's the Difference?

Self-Locking Mailing Boxes Die-cut tabs fold into slots to lock the box closed — no tape or adhesive required. Fast to assemble, clean presentation, and easy for customers to open. Our most popular style for ecommerce dispatch.

Self-Sealing Mailing Boxes Feature a built-in peel-and-seal adhesive strip on the closing flap. Pull the tab, fold, and press to seal — no tape dispenser needed. Ideal for high-volume dispatch operations where speed is a priority.

Not sure which is right for your business? Our team can advise on the best style for your product, packing speed, and budget. Contact our packaging specialists for a recommendation.

Need Custom Printed Mailing Boxes?

Branded mailing boxes create a memorable unboxing experience that turns customers into repeat buyers. Our custom printing team can print your logo, brand colours, and messaging directly onto your mailer boxes — from just 25 units.

Printing options for mailing boxes include:

Digital print — full colour CMYK, available from just 25 units. Print on the top, front and back of your box.

Screen print — 1–2 colour spot printing, from 250 units. Great for bold logo-only designs.

Flexographic print — cost-effective printing for corrugated mailers at volume, from 250 units.

Digital printing is available from just 25 units, with screen and flexographic printing for larger production runs. Suitable for ecommerce brands, subscription box companies, retailers, and wholesalers.

Looking for Australia Post compatible mailing boxes? We stock a full range of Australia Post compatible parcel sizes — available online with no minimum order quantities on most sizes.

Why Businesses Choose PackQueen for Mailing Boxes

100+ Mailing Box SizesMore mailing box sizes than any other online supplier in Australia

Wholesale Mailing Box PricingTransparent pricing online — automatic volume discounts as quantities increase

Low Minimums from 25 UnitsOrder the quantity you need, from small runs to bulk pallet quantities

Australian Manufacturing Options90%+ of our range manufactured in Melbourne — buy direct from the source

Fast Australia-wide DeliveryDispatched from our Thomastown, Melbourne warehouse within 1–3 business days

100% Recyclable CardboardFSC-certified materials — your customers can recycle the box straight away

Custom Printing from 25 UnitsBrand your mailing boxes with full colour digital printing

Trusted Since 2007Over 90,000 Australian businesses served across 18+ years

How to Order Mailing Boxes from PackQueen

Browse our range and use the size filters to find your exact dimensions.

Choose your quantity — receive automatic volume discounts as quantities increase.

Add to cart and complete your order through our secure online checkout.

Your mailing boxes will be dispatched from our Melbourne warehouse with tracking provided.

Not sure which mailing box is right for your product? Contact our packaging specialists for personalised advice, or order a sample for $2–$10 plus postage before placing a larger order.

Frequently Asked Questions

What is the difference between a mailing box and a shipping carton?

Mailing boxes are die-cut boxes designed for ecommerce dispatch — they fold flat, assemble quickly, and in most styles lock closed without tape. Shipping cartons are heavier duty corrugated boxes designed for freight and bulk shipping, typically sealed with tape. For most ecommerce businesses dispatching individual parcels, a mailing box is the right choice.

Do I need tape to close a mailing box?

Most of our die-cut mailing boxes are self-locking — tabs fold into slots to hold the box closed without tape. Our self-sealing boxes have a built-in peel-and-seal adhesive strip. Some styles may benefit from tape for extra security on heavier contents. If you're unsure, contact our team for a recommendation.

Can I order a sample mailing box before placing a full order?

Yes — samples are available on most products from $2–$10 plus postage. We strongly recommend ordering a sample to test the fit with your product before committing to a full order. Visit our samples page to get started.

Do you have mailing boxes compatible with Australia Post?

Yes — we stock a full range of Australia Post compatible mailing boxes in standard parcel sizes. These are suitable for lodgement at Australia Post outlets and with regular parcel services. Check individual product pages for dimensions to ensure compatibility with your preferred service.

Can you print my logo on mailing boxes?

Yes — we offer digital printing on mailing boxes from just 25 units. Full colour CMYK print on the top, front and back of your box. For larger runs, screen printing and flexographic printing are also available. Visit our custom packaging page or contact us for a quote.

Are your mailing boxes recyclable?

Yes — all our cardboard mailing boxes are made from 60–80% recycled materials and are fully recyclable via standard kerbside recycling. Most are made from FSC-certified cardboard, ensuring responsible sourcing from sustainably managed forests. Your customers can put the box straight into their recycling bin.

What is the minimum order for mailing boxes?

There is no minimum order on most stocked mailing box sizes — you can order as few or as many as you need. For custom printed mailing boxes, the minimum order is 25 units for digital printing, and 250 units for screen or flexographic printing. Volume pricing applies automatically as quantities increase.

How quickly are mailing boxes dispatched?

Most stocked mailing box sizes are dispatched within 1–3 business days from our Thomastown, Melbourne warehouse. Custom printed mailing boxes typically dispatch within 5–10 business days from artwork approval. Visit our delivery page for current lead times.