You've done it a hundred times. Order comes in, you open MyPost Business, create the shipment, download the PDF, find it in your Downloads folder, open it, fight with the print dialog, wonder why the label printed off-centre, and try again.
Five minutes. Per label. Every day.
There's a faster way, and it's called a watch folder. Once it's set up, you'll never touch that print dialog again.
In this article:
- What a watch folder actually does
- Why MyPost Business labels need extra handling
- How LabelChop's watch folder works
- Setting it up: a step-by-step walkthrough
- The set it and forget it reality
- Common questions and edge cases
What a watch folder actually does
A watch folder is just a folder on your computer that a piece of software monitors in the background.
The moment a new file lands in that folder, the software wakes up, looks at the file, and does something with it. In the case of label printing, "doing something" means: crop it to the right size and send it straight to your thermal printer.
No double-clicking. No print dialogs. No choosing paper sizes. The file appears, the label prints. That's it.
The concept has been around in enterprise printing environments for years — big warehouses use it to route print jobs automatically. For small sellers doing 20–100 orders a week, the same idea saves the same amount of friction. You just need software that understands your specific workflow.
Why MyPost Business labels need extra handling
Here's the problem that makes watch folders tricky for Australian sellers.
When you download a label from MyPost Business, you get an A4 PDF. The actual 100×150mm label is sitting in one corner of that page. Your thermal printer expects a 100×150mm file, not an A4 one.
Most generic "watch folder and print" tools will send that A4 PDF straight to your thermal printer. The result is a label that prints tiny in the corner of the label stock, or throws an error, or comes out completely blank.
To print MyPost Business labels on a thermal printer, you need something that:
- Detects the label position on the A4 page
- Crops it out precisely
- Scales it to exactly 100×150mm
- Sends it to the right printer
Generic watch folder software doesn't do this. That's why most Australian sellers are still doing the whole thing manually.
How LabelChop's watch folder works
LabelChop is built specifically for this problem. It watches your Downloads folder (or any folder you choose), detects MyPost Business label PDFs, crops them to 4×6, and fires them straight to your thermal printer.
The watch folder is the core of how it works. There's no "import" button to click, no queue to manage. You download the label from MyPost Business, and by the time your hand moves from the mouse to grab the next order, the label is printing.
Here's what happens under the hood:
- A new PDF lands in your watched folder
- LabelChop detects it within a second or two
- It checks whether it's a MyPost Business label (single or multi-label PDF)
- It finds the label position on the A4 page automatically
- It crops to 100×150mm
- It sends the job to your thermal printer with the right settings
You don't see any of this. You just hear the printer start.
LabelChop runs in your system tray — it's a small icon sitting quietly in the background. No taskbar clutter, no app windows to keep open. It's just there, doing its job.
Setting it up: a step-by-step walkthrough
Getting LabelChop's watch folder running takes about five minutes.
Step 1: Download and install LabelChop
Grab the installer from labelchop.com/api/download. It works on Windows and Mac. Run through the installer — it's a standard next-next-finish process.
Step 2: Choose your watch folder
When LabelChop opens for the first time, it asks you to choose a folder to watch. For most sellers, this is the Downloads folder. That's where MyPost Business saves labels by default.
If you've set up a custom folder for label downloads (some sellers have a dedicated "Labels" folder on their desktop), you can point LabelChop there instead.
Step 3: Select your thermal printer
LabelChop reads the printers installed on your system and shows you a dropdown. Select your thermal printer — whether that's a Dymo LabelWriter 4XL, Zebra ZD421, MUNBYN, Brother QL-1110NWB, or another 4×6 label printer.
If your printer isn't showing up, make sure the drivers are installed. Check the FAQ for printer-specific instructions.
Step 4: Test with a real label
Go to MyPost Business, create a test shipment, and download the label. If LabelChop is running, you should hear your printer start within a couple of seconds.
Check that the label is centred on the label stock and that the barcode scans properly. If anything looks off, there are print quality settings in LabelChop to adjust.
Step 5: That's it
Seriously. You're done. LabelChop starts automatically when you log into your computer, sits in the system tray, and watches that folder until you tell it to stop.
See the pricing page if you want to move past the free trial — it's $9/month or $79/year.
The set it and forget it reality
The phrase "set it and forget it" gets thrown around a lot in software marketing. Most of the time it's wishful thinking.
With watch folder printing, it actually holds up.
Once LabelChop is pointed at your Downloads folder and your thermal printer is selected, there is genuinely nothing left to do. Every label you download from MyPost Business prints automatically. You stop thinking about the printing process entirely.
For sellers doing 20–50 orders a week, the time savings is measurable. Five minutes of clicking and reprinting per label adds up to 90 minutes to four hours a week. That's time you can spend on listings, customer service, or just not sitting at your desk.
For sellers doing 50–200 orders a week, automatic label printing shifts from a nice-to-have to a basic operational requirement. At that volume, you need the process to be invisible so you can focus on everything else.
What it looks like in practice
A typical morning packing session with LabelChop running looks like this:
- Open MyPost Business
- Select all orders, click "download labels"
- Pack boxes while the labels print automatically
- Stick labels on boxes as they come out
You're not context-switching between MyPost Business and your PDF viewer and your print dialog. The labels come out as you pack. The workflow runs in parallel instead of in sequence.
Common questions and edge cases
What if I download multiple labels at once?
MyPost Business lets you download labels in bulk as a single multi-label PDF. LabelChop handles this by detecting multiple labels on the page and printing each one individually. If bulk orders are becoming normal for your store, this guide to batch printing shipping labels on a thermal printer covers the broader workflow.
Does it work with eBay orders?
Yes. eBay Australia is connected to MyPost Business through the seller hub. When you generate a label via eBay's interface, it comes through MyPost Business as the same A4 PDF format. LabelChop treats it exactly the same way.
The same applies to Shopify, Etsy, and Amazon AU orders routed through MyPost Business.
What if LabelChop isn't running when a label downloads?
LabelChop only detects files that land in the watched folder while it's running. If you download a label and LabelChop wasn't open, you'll need to print that one manually (or re-trigger it by moving the file out and back into the folder).
This rarely matters in practice because LabelChop launches on startup and runs in the background. If you're ever unsure, look for the icon in your system tray.
Does it print automatically even if my computer is locked?
No. Printing requires an active user session. If your screen is locked or your computer is asleep, the label won't print until you're back. But it will print the moment you unlock.
Can I use it with a label printer that isn't on the compatible list?
LabelChop works with any printer configured as a 100×150mm (4×6) device in your system's print settings. The compatible printers listed on the site are tested and confirmed — if yours isn't listed, try it and see. Most thermal printers in that format will work fine.
Related reading
If you're setting up your label workflow from scratch, these posts cover the pieces you'll want to have in place first:
- Setting up a Dymo 4XL for MyPost Business labels
- How to crop MyPost Business A4 labels to 4x6
- MyPost Business label setup for eBay and Shopify
- Best thermal printers for Australia Post labels in 2026
Wrapping up
Watch folder printing isn't a new idea, but until now there was no good option for Australian sellers using MyPost Business and a thermal printer.
Generic watch folder tools send the A4 PDF straight to the printer and you end up with a broken label. The full shipping platforms (Starshipit, Shippit) cost $39–$49/month and do way more than most sellers need.
LabelChop sits in the middle: it does one thing, does it right, and stays out of your way. Point it at your Downloads folder, select your printer, and go back to packing.
Download the free 14-day trial and see if you can still remember what the print dialog looks like after a week.