How to Convert OST Emails to MBOX Format Without Losing Data?

THOMPSON01

Member
May 10, 2025
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6
I have an old OST file from my Outlook account that I can no longer access because the Exchange server is unavailable. I now want to convert the emails from this OST file into MBOX format so that I can import them into Thunderbird. However, I am concerned about potential data loss, folder structure issues, or email corruption during conversion. Could someone please guide me on the safest and most reliable method to convert OST to MBOX?
 

aidenjohns12

New member
Aug 5, 2025
4
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1
You can easily convert OST emails to MBOX format without losing data by using TrustVare OST to MBOX Converter. It gives a safe and accurate conversion while preserving email formatting, attachments and folder structure. It works without Outlook installation. Even non-technical users can perform the process quickly. It is best for migrating OST emails to MBOX-compatible email applications such as Thunderbird, Apple Mail, Eudora, etc.