Australia Post prepaid and tracked labels explained: Express Post, Parcel Post and Registered Post

Australia Post has a lot of similar-sounding label options: prepaid satchels, Express Post labels, Parcel Post tracking labels, Registered Post. The differences are not only about speed—they determine whether you can use your own packaging, what each parcel costs, and whether you can print in bulk at all. Worth getting straight before you commit.

Prepaid satchels: postage built into the packaging

Australia Post sells prepaid satchels and boxes with the postage included in the price of the packaging. Buy one, pack it, ship it—nothing to print, and prepaid options exist for both Parcel Post and Express Post. For occasional senders this is the simplest route: no account, no printer.

The trade-off is fixed sizes, mandatory use of their packaging, and retail pricing. If your item does not fill the satchel you are paying for air; go slightly over and you jump a size.

Printing your own labels: MyPost Business and eParcel contracts

The alternative is printing a label per order against a business account. MyPost Business is aimed at smaller senders—sign up and start, with rates that improve as monthly volume moves up the bands. An eParcel contract is negotiated for higher volume and usually comes with lodgement and packaging requirements.

Both produce official, tracked labels. The real advantages: you can use your own boxes, you are priced on actual weight and dimensions, and the rate follows your account agreement rather than the retail counter. Any seller shipping regularly should be on this path.

Express Post labels: prepaid envelopes or account printing

Express Post is the expedited service, typically 1–3+ business days, tracked and with up to $100 of cover. It works the same two ways: buy prepaid Express Post satchels with the postage included, or print an Express Post label per order on your account.

The decision is the same as above: occasional sends at a size that fits the satchel favour prepaid; daily express volume across varying parcel sizes favours account printing, which is both cheaper and more flexible. One caveat—Express Post delivery commitments apply within its network, so it is worth confirming the destination is covered before you promise a date.

What a "tracking label" actually means

Searches for "Parcel Post tracking labels" or "Express Post tracking labels" are usually asking how to get a label with a tracking barcode. The answer: tracking is built into both routes. Prepaid satchels come with a tracking barcode; labels printed on an account get a tracking number assigned at generation.

There is no separate "tracking label" to buy on top. What does deserve attention is print quality—labels must be printed at 100% scale, because a scaled or cropped barcode will not scan at lodgement and has to be reprinted.

Registered Post prepaid labels: why they do not apply to parcels

Registered Post is a letters and documents service providing proof of posting and signature on delivery—typically used for contracts and identity documents. It is not a parcel service.

If you are searching for "registered post prepaid labels" but shipping a parcel, what you actually want is proof of delivery, which means adding Signature on Delivery to Parcel Post or Express Post. Getting this wrong usually ends with the service being rejected at lodgement.

Can I send someone a prepaid label?

Yes. Create a label on your own account with your address as the destination, then send it to the other person to print and attach. The cost is charged to your account at creation, so they pay nothing—this is the standard returns setup. Just remember the money is spent up front, and refund rules if the parcel is never sent follow the carrier’s current policy.

When to switch from prepaid satchels to account labels

There is no universal volume threshold, but there are three clear signals: you regularly find yourself annoyed that an item does not fill the satchel, or that being slightly over pushes you into the next size up; your parcel dimensions vary enough that fixed-size satchels rarely fit well; and you are making repeated trips to buy packaging. Any two of those and it is time to switch.

The gain is not only unit price. Account labels can be generated in bulk, paid in bulk and printed together—the time saved is often worth more than the postage saved.

At volume: printing hundreds of Australia Post labels

The ShipCay flow: import orders once via CSV or API, connect directly to Australia Post to batch-generate official labels (Parcel Post, Express Post and international services all supported), auto-compare each order across Australia Post, Aramex, UPS and others to print at the lowest rate, pay the batch in one run, and download everything as a single merged PDF. Tracking numbers and scan events sync back automatically.

Light parcels are especially worth comparing—Aramex frequently comes in below Australia Post on small cross-border items, and comparing per order beats defaulting to one carrier.

Common questions

What size should labels print at? 4×6 in (100×150 mm) thermal, or A4 printed and cut. Always at 100% scale—never scaled down.

What do international parcels need? Customs data: an accurate goods description, quantity and declared value, plus an HS code and both phone numbers for many destinations. Vague entries like "gift" or "sample" are the most common cause of held parcels.

Can unused prepaid satchels be refunded? Whether unused prepaid packaging can be returned or exchanged follows the current Australia Post policy—worth confirming before buying in quantity.