Postbox to Microsoft Outlook, here’s your simple guide on how to migrate with free of any technical jargon. Have never even attempted email migration task like this? Do not worry. The tool recommended here to convert the files and the instructions are beginner friendly and anyone can understand them despite what their tech background consists of.
Migrate Postbox to Microsoft Outlook for Mac & Win
For the purpose of converting Postbox to Microsoft Outlook, we are going to be using a Mac-based application called “Mail Extractor Pro” that converts Postbox database directly to PST files. Many ordinary applications for this job do not convert the Postbox databases directly, but instead require some kind of files to be selected as input by users. For instance, in many common methods, you are required to first archive data to MBOX files and the convert them to PST. “Mail Extractor Pro” on the other hand can detect the default Postbox Profile automatically and then start converting all the contents from the Profile to PST files without needing any other input from the users.

Mail Extractor Pro is a Mac based tool that can convert MBOX, EML, Postbox, Thunderbird and Apple Mail to Microsoft Outlook (for Mac & Win).
How to migrate Postbox to Microsoft Outlook
If all that is bit confusing, don’t worry. The guide below will help you exporting Postbox to Microsoft Outlook without worrying about any of those technical explanations.
Step 1:
If you want to follow along, we recommend the first step should be you get the free version of the tool using the link below, install it, and being the trial version on your computer. This way you can better understand how it works and what are all the steps included in the process.
Step 2:
Launch “Mail Extractor Pro” on your Mac computer.
Step 3:
Click on “Load” button next to the “Thunderbird/Postbox” icon. You will notice there are two other options: Apple Mail and MBOX. It means you can also use “Mail Extractor Pro” to convert Thunderbird, Apple Mail, and MBOX files to PST as well.
Step 4:
After clicking “Load” next to Postbox option, you will have two more choices to load the database you want to convert:
- Autoload: to automatically load the default or primary Postbox Profile
- Open: to manually select any other Postbox profile you want to convert to PST.
Step 5:
Once you have selected the input data to convert to PST, you can see the folders inside your selection. You are free to remove or exclude any of them if you think they are unnecessary and you no longer want them to convert to PST.
Step 6:
6th step is optional, but recommended. Enter the size for the PST file in the given field, which sets the maximum limit for the output PST that it can reach. If the input Postbox files are big and the entered PST file size isn’t enough, the tool will automatically create additional files, essentially splitting them into smaller files. A single large PST file is not a good idea and can impact Outlook performance in a negative way.
Step 7:
Finally, click on “Convert” and choose the desired location to you want the tool to save the converted PST file. If it’s a free trial version you are using, click “Yes” to proceed. And the just wait until “Mail Extractor Pro” has finished converting the files.

The PST files generated by the application can be used with both Windows and Mac Outlook to import data. As for activation, there are several choices to pick the license suitable for you: personal, household, or commercial.