Converting MBOX files to Outlook PST without losing data starts with choosing a safe method that preserves folder structure, attachments, and email metadata (To, From, Subject, Date). If you’re using Thunderbird, a reliable approach is to import the MBOX file into Thunderbird first, then move emails to Outlook via an intermediate step such as exporting data in a format Outlook can read. However, manual methods can be time-consuming and may risk missing emails, breaking formatting, or dropping attachments—especially with large mailboxes. To prevent data loss, always take a backup of the original MBOX file and verify mailbox integrity before migration. During conversion, ensure your solution supports bulk export, maintains original email hierarchy, and keeps internet headers intact for compliance and forensic needs. After importing the PST into Outlook, compare item counts, spot-check critical folders (Inbox, Sent, Archive), and confirm attachments open correctly. For business or large-scale migrations, using a dedicated MBOX to PST converter is often the most accurate
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