Apple Mail doesn’t support Pst file format, which is the format that Outlook for Window uses to store the contents. Which is why if you are moving to Apple Mail, your only choice is to convert Outlook Pst files to Mbox format.
You can use “Pst Extractor Pro” to do that. This tool has a user-friendly GUI to easily convert the files with accuracy and control.
To start, being by clicking here, and download the free trial of “Pst Extractor Pro”. This will only convert 10 items per folder, but it is good enough to see it working in real time. The setup is pretty small (around 10 MB) and will be installed in a minute. Once all of that is done, launch the tool from where you installed it (generally inside “Applications” list in Mac).
You will see a button labeled “Add Pst” on the top of the tool. Click it and navigate to the place where you have stored Pst files.
Note* – To export data to Pst files from Windows Outlook, simply go to file → Export → Choose the account and the folders to export and follow the instructions. Once the data is exported, copy that Pst file to your Mac.
After loading this Pst file into “Pst Extractor Pro” you can see all your folders in the correct original hierarchy. You are free to choose what you want to convert. Simply select those folders and uncheck the others. As an added feature to the tool, you can also filter these folders according to the type of items inside them, such as emails, contacts, and calendar entries.
Next, choose “Apple Mail, Address Book, Calendar” as the output format.
Note* – “Pst Extractor Pro”can do more than just convert Outlook to Mbox file. It can convert Pst files to virtually all the formats for Mac email clients, such as Entourage 2004/2008, Thunderbird, Postbox, Mbox, Rge, and Eml format. Simply select the format you want Pst to convert to.
Lastly, click “convert” and the conversions will begin. The tool will convert all the data inside Pst file to Mbox with the rate of 1 GB per 10 minutes.
Besides from its major purpose, conversion of Pst to Mbox, you can also do more. You can choose to save read and unread emails in separate folders. You can merge contacts and calendar data per folder into a single Vcf and Ics file respectively. You can also choose to split Mbox files after a certain limit.
“Pst Extractor Pro” has finally simplified the dreaded task of converting Outlook to Mbox file. Try it here. If you feel satisfied, you can easily register for its paid version and unlock every feature that can convert unlimited files and items.