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How to open/read legacy Mac Mail MBOX files on a Windows machine?

A few years ago, I backed up my old Mac's email data by exporting the mailboxes to MBOX format before giving the machine away. Currently, I only have access to a Windows 11 PC and urgently need to retrieve some old tax invoices hidden inside those files.

I tried importing them into the standard Windows Mail app and Outlook, but neither supports the format out of the box.

Short of borrowing a friend's Mac just to load these into Apple Mail, what are my best options for accessing this data on Windows? I'd prefer a way to convert them into a PST format so I can natively browse them in Outlook.*** I wanted to see if the community has any open-source recommendations or built-in Windows workarounds first.


[Edited by Moderator]

1 reply

I think that Thunderbird can open them. It's free and you might need an extension to do the import. Check the Thunderbird website or google it.