You can easily convert Mac DBX files using DBX File Converter. The tool supports Mac OS Machines.
STEP 1
Launch DBX file Converter on your Mac Computer.
STEP 2
Select DBX files/folder using Add File(s) or Add Folder(s).
STEP 3
Choose the required folder from the selected Outlook Express DBX Folder.
STEP 4
Choose saving format from PST, EML, EMLX, MSG, HTML, MHT, CSV, PDF, etc.
STEP 5
Here we have selected PDF as Saving Option and then choose desired Destination Location & File Naming Option. And Press Export button to start the conversion process.