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I am currently working in an environment where Microsoft Outlook is used with Exchange, and I have several OST files that contain important emails along with attachments. Due to a system migration and the need to access these emails in email clients like Thunderbird, Apple Mail, or other MBOX-supported platforms, I need to convert OST files into MBOX format. The main challenge is ensuring that all email attachments, folder structure, and metadata (such as To, From, Subject, and Date) are preserved during the conversion process. I am also looking for a method that is easy to use, supports bulk conversion, and works even if Outlook is not configured or the OST file is orphaned. Can someone please suggest a reliable and simple solution to convert OST to MBOX with attachments intact?