To convert MBOX to MSG without losing emails, it is important to choose a method that accurately reads MBOX files and preserves the original email structure. MBOX files often contain years of emails from clients like Thunderbird, Apple Mail, or Eudora, so even a small mistake during conversion can result in missing messages or damaged attachments. Manual methods usually involve importing MBOX data into intermediate email clients and then exporting it again, which increases the chances of data loss and formatting issues.

A safer approach is to use a dedicated MBOX conversion tool on Windows that is designed specifically for this task. For example, tools such as the MailConverterTools MBOX Converter Tool can directly convert MBOX files into MSG format without altering the source data. During the conversion, all essential email components—including subject lines, sender and recipient details, timestamps, message body content, and attachments—are maintained exactly as they appear in the original mailbox.
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