Is it possible to migrate MBOX to Exchange Server without data loss?

Yes, it is possible to migrate MBOX to Exchange Server without data loss, but it depends on the method you use.

Since Exchange Server does not support MBOX files directly, you first need to convert MBOX into a supported format like PST or use a migration tool. If you use a proper conversion method, email data such as messages, attachments, subject lines, and folder structure can be preserved during the migration.

However, manual methods (like Thunderbird export and Outlook import) can sometimes lead to issues such as missing formatting or incomplete data if not done carefully.

For a safer and more reliable migration, many users prefer using a professional tool like the BLR MBOX Converter Tool, which helps maintain data integrity and reduces the risk of data loss while moving MBOX emails into Exchange Server mailboxes.

So, with the right method, migration without data loss is definitely possible.