Convert PST to Thunderbird on any platform
Thunderbird is one of the most popular open-source email clients, available on Mac, Windows and Linux. If you have Outlook PST files you want to access in Thunderbird, this converter processes them locally on your machine — no internet connection required, and your email data stays completely private.
How to convert PST to Thunderbird
1
Select your PST file
Open the converter and select the PST file you want to migrate. The tool works with PST files from any version of Outlook, whether created on Windows or Mac.
2
Run the offline conversion
The converter processes the PST archive entirely on your own machine, extracting emails, folder structure, and attachments into a format Thunderbird can import.
3
Import into Thunderbird
In Thunderbird, use File > Import to import the converted mailbox files. Your emails will appear in Thunderbird with the original folder hierarchy intact.
Works on Mac, Windows and Linux
Unlike many PST tools that are Windows-only, the PST to Thunderbird Converter runs natively on all three major platforms. Whether you are migrating on a Mac, a Windows PC, or a Linux machine, the process is the same.
What gets preserved
📧
All emails
Every message in your PST archive is converted, including HTML-formatted emails.
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Folder structure
Your original Outlook folder hierarchy is preserved exactly in Thunderbird.
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Attachments
All file attachments are carried through the conversion and remain accessible in Thunderbird.
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Dates & headers
Original sent and received dates, as well as email headers, are preserved.
Do I need Outlook installed?
No. The converter reads PST files directly — it does not use or require Outlook. This makes it ideal for users who have switched platforms and no longer have access to Outlook, or who simply want to avoid installing it.
Online converters vs offline
Online PST converters require uploading your entire email archive to a third-party server. Email archives frequently contain sensitive personal, financial, and professional information. An offline converter keeps all processing on your own machine — your data never leaves your control.
Pricing
The PST to Thunderbird Converter is free to download. A one-time $9.99 licence key is required to activate the tool and process your PST files. There are no subscriptions and no recurring charges.
Frequently Asked Questions
Can I convert PST to Thunderbird without Outlook?
Yes. The converter reads PST files directly without Outlook being installed on your machine.
Does the PST to Thunderbird converter work on Windows?
Yes. The converter runs on Mac, Windows and Linux.
Will my folder structure be preserved when converting PST to Thunderbird?
Yes. The converter preserves your original Outlook folder hierarchy, emails, and attachments.
How much does the PST to Thunderbird converter cost?
The tool is free to download. A one-time $9.99 licence key is required to activate it.
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