Express Post prepaid satchels and boxes
- Includes postage. View pricing
- Postage based on size (not weight)
- Part of our flat rate packaging range
- 5 sizes from extra small to extra large
Send your parcels with our express delivery service
Our Express Post delivery service covers all addresses within Australia and automatically includes:
Up to $100 of compensation2
Tracking3
Express Post packaging options
5kg and under using our flat rate packaging
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Express Post flat rate packaging
- Postage not included. View pricing
- Postage based on size (not weight)
- Part of our flat rate packaging range
- Various packaging available
Other packaging
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5kg and under using other packaging
- Postage not included. View pricing
- Postage based on weight or cubic weight (whichever is greater4)
- Using other packaging (yours or ours)
- Postage from 250g to 5kg
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Sending over 5kg up to 22kg
- Postage not included. View pricing
- Postage based on weight or cubic weight (whichever is greater4)
- Using other packaging (yours or ours)
Express Post delivery information
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Next business day guarantee
We offer a next business day guarantee if you post your item within our Express Post next business day delivery network on a business day (Monday to Friday) and meet the Express Post service conditions.1
Items should generally be lodged in our yellow street posting boxes before 4pm.
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Next business day delivery network postcodes
Express Post next business day delivery1 is only available within the Express Post next business day delivery network. View eligible postcodes.
Outside of this network, Express Post items are delivered as fast as possible using existing transport links.
Are you a business customer?
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Express Post postage costs
Postage for prepaid satchels is based on size, not weight. These prices include packaging and postage for sending within Australia.
| Prepaid product | Extra small | Small | Medium | Large | Extra large |
|---|---|---|---|---|---|
| Express Post satchel and postage | 280 x 215mm $13.05 | 355 x 225mm $15.00 | 390 x 270mm $19.65 | 405 x 315mm $24.25 | 510 x 440mm $32.30 |
| Express Post parcel box and postage | N/A | 220 x 160 x 70mm $17.05 | 240 x 190 x 120mm $22.05 | 390 x 280 x 140mm $27.30 | 440 x 277 x 168mm $35.80 |
Extra small available from 1 August 2025 from Australia Post Online Shop or Post Offices.
Flat rate postage is based on size, not weight. These prices are for postage within Australia only and don’t include the price of packaging. Choose from mailing boxes, mailing tubes, tough bags and more.
| Flat rate packaging | Extra small | Small | Medium | Large | Extra large |
|---|---|---|---|---|---|
| Express Post postage only | $12.70 | $14.65 | $19.25 | $23.80 | $31.80 |
Extra small available from 1 July 2025.
Use other packaging (yours or ours) and postage is based on the weight or cubic weight (whichever is greater4) and the destination. These prices are for postage within Australia only and don’t include the price of packaging.
| Other packaging | Up to 250g | Over 250g up to 500g | Over 500g up to 1kg | Over 1kg up to 3kg | Over 3kg up to 5kg |
|---|---|---|---|---|---|
| Express Post postage only | $12.70 | $14.65 | $19.25 | $23.80 | $31.80 |
Extra small available from 1 July 2025.
You can send up to 22kg, up to 105cm length, and up to 0.25 cubic metres within Australia.
Postage for parcels over 5kg up to 22kg is based on the weight or cubic weight (whichever is greater4) and the destination.
Calculate the cost and time to send your item
Use our online calculator to estimate the postage price and delivery time to send your letter or parcel within Australia or overseas. If you need more assistance, visit your local Post Office and talk to our friendly team.
Frequently asked questions
We have a range of Australia Post-branded packaging eligible for flat rate postage:
- Prepaid satchels
- Flat rate satchels
- Mailing boxes
- Padded mailers
- Tough bags
- Mailing tubes
Visit flat rate packaging on the Online Shop to see what's available.
Using other packaging? If you’re sending 5kg or under in Australia using other packaging, follow flat rate postage based on weight.
Sending over 5kg, or overseas? Your postage cost is based on the weight of your item, its destination and delivery speed. Use our online calculator to estimate your postage costs.
You can still use Express Post for delivery to or from areas that fall outside the Express Post network.
While next day delivery is not guaranteed, your item will still be processed, handled and delivered as fast as possible.
Use our online postage calculator for an estimate of when your parcel might arrive.
Items up to 22kg that are too large or heavy to fit in a satchel can still be sent by Express Post. Simply attach an Express Post parcels label to your pre-packaged item. Postage varies by weight and destination. Labels are available through Post Offices and via MyPost Business
View more information about Express Post parcels.
You can still use Express Post for delivery to or from areas that fall outside the Express Post next business day delivery network. While next business day delivery is not guaranteed, your item will still be processed, handled and delivered as fast as possible. Estimate delivery times with our downloadable Domestic Parcels Delivery Estimator (PDF 167kB).
Use our online postage calculator for an estimate of when your parcel might arrive.
'Contact sender' means your item has been returned to the sender.
This can happen if we couldn't process the item for the following reasons:
- Some of the details were wrong or were incomplete.
- We weren't able to deliver the item. We sent a collection notification, but no one picked it up in 10 business days.
- Some of the details the sender gave us when they posted the item were wrong or weren’t complete.
If this happens, we’ll let the sender know why the item has been returned to them.
You should contact the sender to organise redelivery.
- Visit Express Post parcels for satchel dimensions
- Visit Express Post letters for envelope dimensions
1 Next business day delivery is only available within the Express Post next business day delivery network. The national next business day delivery network operates between capital cities (excluding Darwin; and for Perth, delivery into the CBD only) and some major centres. Express eParcel is not covered in the Express Post guarantee.
2 Parcel Post and Express Post comes with up to $100 compensation included. Additional charges for Extra Cover apply. Extra Cover provides you with cover for the specified value of your item (up to $5,000 or part thereof) if your item is lost or damaged while being carried by Australia Post. Visit optional extras for more information. Subject to the Australian Consumer Law, Australia Post does not accept liability for any consequential or indirect loss or damage arising due to any failure related to our service. Neither the compensation included with our service nor the purchase of Extra Cover limits any rights you may have under the Australian Consumer Law.
3 Track events will vary depending on how your item is lodged and delivered. For details visit our tracking service.
4 For parcels where you use your own packaging or any other packaging, which is not eligible for the national flat rates for postage based on size, Australia Post will assess charges according to the actual weight or cubic weight equivalent of the parcel, whichever is greater. Learn more about cubing on page 5 of our Domestic parcels guide (PDF 443kB).