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Setting up a Dymo 4XL for MyPost Business labels

Complete Dymo 4XL setup guide for MyPost Business shipping labels. Driver install, paper size config, and fixes for off-centre or blank labels.

·9 minutes reading
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If you've just bought a Dymo LabelWriter 4XL for your eBay or Shopify store, you've probably already hit the wall. MyPost Business spits out an A4 PDF, your thermal printer expects a 4x6 label, and the result is either a tiny label surrounded by white space or something that prints halfway off the edge.

The 4XL is one of the most popular thermal printers among Australian sellers for good reason. It prints 4x6 shipping labels, the labels are cheap, and third-party rolls still work (unlike the newer 5XL). But getting it to play nicely with MyPost Business takes some specific setup that nobody seems to document properly.

This guide covers everything: driver installation, paper size configuration, MyPost Business settings, and fixes for the most common problems.

Dymo 4XL thermal printer setup for printing MyPost Business shipping labels

In this article:

Install the Dymo 4XL drivers

Before you plug the printer in, install the software. Dymo printers are fussy about driver order, especially on Windows.

  1. Go to Dymo support and download DYMO Connect for your operating system (Windows or Mac).
  2. Run the installer and let it finish completely.
  3. Plug in your Dymo 4XL via USB.
  4. Windows should detect the printer automatically. If it doesn't, open Settings > Bluetooth & devices > Printers & scanners and click "Add device."

On Mac, the process is similar. Install DYMO Connect first, connect the USB cable, then check System Settings > Printers & Scanners to confirm it shows up.

Installing Dymo 4XL drivers and configuring printer settings on a computer

A common mistake is plugging in the printer before installing drivers. Windows will sometimes grab a generic driver that almost works but gets the paper size wrong. If this has already happened to you, uninstall the printer from your device list, remove any Dymo software, reinstall DYMO Connect, and then reconnect the USB cable.

Check the driver version

Open DYMO Connect and look for the version number in Help > About. If you're on an older version and having issues, update to the latest. Dymo released patches after Windows updates broke blank label printing in 2024, so running the current version matters.

Set the correct paper size

This is where most people get stuck. The Dymo 4XL needs its default paper size set to 4in x 6in before you print anything. If you skip this, every label will be the wrong size.

Windows

  1. Open Settings > Bluetooth & devices > Printers & scanners.
  2. Click on DYMO LabelWriter 4XL.
  3. Click Printing Preferences.
  4. Under Paper Size, select 4 in x 6 in from the dropdown.
  5. Click Apply, then OK.

Mac

  1. Open System Settings > Printers & Scanners.
  2. Select the DYMO LabelWriter 4XL.
  3. Click Options & Supplies (or Open Print Queue > Printer Setup).
  4. Set the default paper size to 4 in x 6 in (101.6mm x 152.4mm).

If "4 in x 6 in" doesn't appear in your paper size list, your driver isn't installed correctly. Go back to the driver installation step and reinstall DYMO Connect.

Why 4in x 6in and not 100x150mm?

The Dymo 4XL uses imperial paper sizes internally. The "4 in x 6 in" option (101.6mm x 152.4mm) is close enough to the Australian standard 100x150mm that labels print correctly. Don't try to create a custom paper size at exactly 100x150mm. It causes more problems than it solves.

Configure MyPost Business for 4x6 labels

MyPost Business defaults to A4 format. If you don't change this, you'll get a full A4 PDF with the shipping label crammed into one corner, which is useless on a thermal printer.

  1. Log in to MyPost Business.
  2. Go to Settings > Carriers > MyPost Business > Print Settings.
  3. Change the label format to A6 - 1 per page.
  4. Save.

Selecting A6 label size in MyPost Business print settings for thermal printer output

This tells MyPost Business to generate a single 4x6 label per PDF instead of cramming it onto an A4 page. The output PDF will be roughly 100x150mm, which matches what your Dymo 4XL expects.

One thing to know: international labels from MyPost Business sometimes ignore the A6 setting and export as A4 anyway. This is a known issue. If you ship internationally, you'll need a way to crop those A4 labels down to 4x6. For a one-off fix, use the free A4 to 4x6 shipping label converter. Our guide on cropping MyPost Business A4 labels to 4x6 covers the manual methods and a faster automated option.

With drivers installed, paper size set, and MyPost Business configured, you're ready to print.

  1. Create a shipment in MyPost Business as normal.
  2. Click Print Label. The PDF will download to your computer.
  3. Open the PDF.
  4. Press Ctrl+P (Windows) or Cmd+P (Mac) to open the print dialog.
  5. Select DYMO LabelWriter 4XL as the printer.
  6. Set paper size to 4 in x 6 in (if it isn't already).
  7. Set scaling to Fit or Actual Size. Do not use "Shrink to fit."
  8. Print.

The label should come out perfectly sized with the barcode, address, and Australia Post tracking info all in the right places.

If it doesn't look right on the first try, check the print preview before printing another. A tiny label in a sea of white space means the paper size in the print dialog is wrong. A label that's cut off at the edges means the scaling is wrong.

Skip the print dialog entirely

If you're printing 10, 20, or 50 labels a day, opening each PDF and going through the print dialog gets old fast. There are tools that can watch your Downloads folder and automatically send new label PDFs to your thermal printer. LabelChop does exactly this for MyPost Business labels, cropping and printing them without you touching a thing. But even without automation, the manual process above works fine for lower volumes.

Fix common Dymo 4XL problems

The 4XL is reliable once it's set up correctly, but the setup process has some well-known pitfalls. Here are the ones that come up constantly in seller forums.

Troubleshooting common Dymo 4XL printing issues with shipping labels

Labels print off-centre

This is almost always a paper size mismatch somewhere in the chain.

  1. Check the Dymo 4XL default paper size is 4 in x 6 in (not "Shipping Label" or something else).
  2. Check MyPost Business is set to A6 - 1 per page.
  3. Check the print dialog paper size matches (4 in x 6 in).
  4. Check the scaling is set to Fit or Actual Size.

If all four are correct and labels are still off, physically check the label roll. Labels need to sit flush against the left guide rail inside the printer. If the roll has shifted, the print position shifts with it.

Labels come out blank

Three things cause blank labels on the 4XL:

  1. Labels are loaded upside down. Thermal labels have a print side and a non-print side. The thermal coating (slightly shiny, waxy side) needs to face up toward the print head. If labels feed from underneath the roll, the print side faces up naturally.
  2. The label sensor is dirty. Open the top cover and look for the small sensor near where the labels feed through. Wipe it gently with a cotton bud dipped in isopropyl alcohol. Dymo recommends cleaning this monthly.
  3. A Windows update broke the driver. This happened in 2024 when a Windows update caused all Dymo printers to feed blank labels. Download the latest DYMO Connect version from Dymo support to fix it.

Printer feeds two labels per print

The Dymo 4XL sometimes feeds one label, then advances a second blank one. This usually happens when the PDF page size is larger than the label.

Reduce the print scale to 98% in your print dialog. This small reduction stops the printer from thinking the content overflows onto a second label.

If that doesn't work, check that you're printing a single-page PDF. Multi-page PDFs will cause the printer to feed a label per page.

Labels jam or feed crooked

Roll-based labels can be finicky about alignment.

  • Make sure labels feed from underneath the roll (not over the top).
  • Push the roll as far left as it goes on the spool.
  • Close the printer lid firmly. If it's not clicked shut, the feed mechanism won't grip properly.
  • If you're using third-party labels, check they're the right width. The 4XL needs 104mm wide labels. Narrower rolls will slide around and feed at an angle.

The print head might need cleaning. Open the lid, and wipe the thermal print head (the thin strip across the width of the label path) with a lint-free cloth and isopropyl alcohol. Let it dry completely before printing.

Faded prints can also mean the labels are old. Thermal labels degrade over time, especially in heat or humidity. If your label stock has been sitting in a hot garage for a year, that could be the problem.

Choosing the right labels for your 4XL

The Dymo 4XL uses 104mm x 159mm (approximately 4x6 inch) shipping labels on a roll. You have two options:

Dymo-branded rolls come in packs of 220 labels. They're reliable but expensive, usually $30-40 AUD per roll from local retailers.

Third-party compatible rolls are significantly cheaper. On eBay AU and Amazon AU, you can find compatible 4XL shipping labels for around $15-20 per roll of 220, sometimes less if you buy in bulk. At roughly 8 cents per label, these are fine for most sellers.

The 4XL doesn't use a chip or authentication system for labels (unlike the newer 5XL), so compatible rolls work without issues. Just make sure you're buying direct thermal labels, not thermal transfer. Direct thermal labels don't need an ink ribbon.

If you're curious how the 4XL stacks up against other options, our comparison of thermal printers for Australia Post covers the Dymo 5XL, Zebra, Brother, and MUNBYN alternatives.

Wrapping up

The Dymo 4XL is still a solid printer for Australian eCommerce sellers, especially if you can find one secondhand. The main thing is getting the paper size right: 4 in x 6 in in the printer preferences, A6 in MyPost Business, and matching sizes in your print dialog. Once those three align, labels come out clean every time.

If you're processing more than a handful of labels per day, the manual open-print-close cycle adds up. LabelChop watches your Downloads folder and sends labels straight to your 4XL automatically, trimmed to 4x6, no print dialogs needed. There's a 14-day free trial if you want to test it with your setup.