Self-locking die-cut mailers

Australia’s Largest Range of Mailing Boxes

Self-locking die-cut mailers, self-sealing boxes, and white, kraft and black mailing boxes in 100+ sizes. Wholesale pricing, custom printing from 25 units and fast Australia-wide delivery.

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100+
mailer sizes

100+ mailer sizesAustralia’s largest online range

Self-locking designsNo tape needed on most styles

Custom printingYour logo from just 25 units

1–3 day dispatchOn stock sizes, from Melbourne

Shop by mailer type

Find the right mailing box.

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Die-cut mailing boxes

Easy-fold, self-locking mailers for ecommerce and gifting, in 100+ sizes. Browse them all below.

Shop all mailing boxes ↓

Australia Post boxes

Standard parcel sizes

Self-sealing boxes

Peel & seal, no tape needed

White mailing boxes

Clean, premium presentation

Black mailing boxes

Bold, premium finish

Book & media mailers

Flat-pack postal mailers

Heavy duty mailers

Double wall corrugated

Multi-crease boxes

A5, A4, A3, A2 & A1

Mailing tubes

Posters, prints & artwork

Custom printed mailers

Your brand from 25 units

Value buy mailers

Budget-friendly options

Find your size

Know what you need? Filter by size.

Use the filters to narrow down by length, width and height, or enter your product’s size in our Box Size Finder.

Filter by size ↓ Use the Box Size Finder

Not sure?

Need help choosing the right mailer?

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

Contact our team →

About mailing boxes

Australia's largest range of mailing boxes.

Mailing boxes (also called mailer boxes, postage boxes or ecommerce boxes) are corrugated cardboard boxes made for posting products. They fold flat for storage, assemble in seconds and, in most styles, lock closed without tape.

We stock 100+ standard mailing box sizes, from small ecommerce parcels to subscription boxes and media mailers, with wholesale pricing, low minimums and fast Australia-wide delivery from our Melbourne warehouse. Over 90,000 Australian businesses have trusted us since 2007.

Not sure which is right for you? Ask our packaging team or order a sample.

Most popular

Self-locking mailing boxes

Die-cut tabs fold into slots to lock the box closed, with no tape or adhesive. Fast to assemble, neat to present and easy for customers to open.

Fastest to pack

Self-sealing mailing boxes

A built-in peel-and-seal strip on the lid. Pull, fold and press to seal, with no tape dispenser needed. Ideal for high-volume dispatch.

Types of mailing boxes

A mailer for every product.

Every style below is made from recyclable corrugated cardboard.

Die-cut mailing boxes

Self-locking mailers in 100+ sizes for ecommerce, subscriptions and retail.

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Self-sealing boxes

Peel-and-seal closure for fast, secure, high-volume packing.

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Custom printed mailers

Full colour digital print from just 25 units.

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Australia Post boxes

Sized to suit standard Australia Post parcel requirements.

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Long mailing tubes

Square corrugated tubes for posters, prints, plans and artwork.

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Book & media boxes

Flat-pack twist-lock mailers for books, DVDs and records.

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Multi-crease boxes

One box, several depths, in A5, A4, A3, A2 and A1.

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Heavy duty mailers

Double wall corrugated for heavier or fragile products.

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Value buy mailers

Budget-friendly mailers that keep packaging costs down.

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Custom printed mailing boxes

Put your brand on the box.

A branded mailer turns every delivery into an unboxing moment, and helps turn customers into repeat buyers.

From 25 units

Digital print

Full colour on brown and white die-cut mailers, outside and inside. Dispatched in 5–10 business days from artwork approval.

Learn more → From 250 units

Screen print

Crisp 1–2 colour logos, including white ink on kraft black mailers. Great for bold, logo-only designs.

Learn more → Custom sizes

Made to measure

Need a size or style we don't stock? We make custom mailing boxes from 250 units.

Get a quote →

Why PackQueen

Why businesses choose us.

100

100+ mailer sizes

Australia's largest online range of mailing boxes.

$

Wholesale pricing

Clear prices online, with volume discounts applied automatically.

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Low minimums

Buy what you need, from a single pack to pallet quantities.

AU

Made in Melbourne

Over 90% of our range is made locally.

1–3

1–3 day dispatch

Stock sizes leave our Thomastown warehouse in 1–3 business days.

60%

Recyclable cardboard

60%+ recycled content and kerbside recyclable.

25

Printing from 25 units

Full colour digital printing on mailing boxes.

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Trusted since 2007

Over 90,000 Australian businesses served.

How to order

Ordering is simple.

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

Choose your quantity. Volume discounts apply automatically.

Add to cart and check out securely online.

We dispatch from Melbourne with tracking.

Not sure which mailer fits? Use the Box Size Finder or order a sample for $2–$10 plus postage before you buy in bulk.

FAQs

Mailing box questions.

Can't find your answer? Call 03 8689 9344 or contact us.

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

Mailing boxes are die-cut boxes made for ecommerce dispatch. They fold flat, assemble quickly and, in most styles, lock closed without tape. Shipping cartons are heavier-duty corrugated boxes for freight and bulk shipping, usually sealed with tape. For most individual ecommerce 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, so tabs fold into slots to hold the box closed. Our self-sealing boxes have a built-in peel-and-seal strip. For heavier contents, a strip of tape adds extra security in transit.

Can I order a sample before placing a full order?

Yes. Samples are available on most mailing boxes from $2–$10 plus postage. We recommend testing the fit with your product before ordering in bulk. Visit our samples page.

Do you have mailing boxes compatible with Australia Post?

Yes. We stock a range of Australia Post compatible boxes in standard parcel sizes. Check each product page for dimensions to make sure it suits your service.

Can you print my logo on mailing boxes?

Yes. Digital printing on brown and white die-cut mailers starts from 25 units, in full colour on the outside and inside. Screen printing (1–2 colours, including white on kraft black) starts from 250 units. See digital print or request a quote.

Are your mailing boxes recyclable?

Yes. Our cardboard mailing boxes contain 60%+ recycled content and can go in kerbside recycling. We use FSC certified cardboard from local board suppliers.

What is the minimum order for mailing boxes?

There's no minimum order on most stocked mailing box sizes. Custom printed mailers start from 25 units for digital print and 250 units for screen print, and custom sizes start from 250 units. Volume pricing applies automatically as quantities increase.

How quickly are mailing boxes dispatched?

Most stocked sizes are dispatched within 1–3 business days from our Thomastown, Melbourne warehouse. Digital printed mailers are dispatched in 5–10 business days from artwork approval. See our lead times for current timings.

Need a hand?

Not sure which mailer is right?

Tell us what you're sending and our Melbourne team will recommend the right size and style. We reply within one business day.

Contact our team Box Size Finder Order samples

Trusted by 90,000+ Australian businesses

Find your perfect packaging.

With Australia’s largest online packaging range, finding the right fit has never been easier. Tell us what you need and our team will send personalised recommendations within 1 business day.