Top 10 Thunderbird to PST Converter Tools in 2025

Migrating from Mozilla Thunderbird to Microsoft Outlook is a common need for businesses and individuals switching email platforms. Since Thunderbird uses MBOX files and Outlook works with PST files , a reliable Thunderbird to PST converter is essential to ensure a smooth migration without losing emails, attachments, or folder hierarchy.

Here’s our expert list of the 10 best Thunderbird to PST conversion tools in 2025 , with their key features, pros, and cons.

1. MailsDaddy Thunderbird to Outlook Converter

One of the most trusted tools for converting Thunderbird MBOX files to PST . It preserves email formatting, attachments, metadata, and folder structure. Supports bulk conversion and allows splitting large PST files.

Pros: Clean interface, high accuracy, fast processing.
Cons: Windows-only tool.

2. Yota Thunderbird Converter

Designed for selective email export, Yota converter maintains rich-text formatting and supports PST along with other formats.

Pros: Useful for targeted migrations.
Cons: Less recognized in the email migration market.

3. Kernel for MBOX to PST

Kernel’s Thunderbird converter works directly with MBOX files to create Outlook-compatible PSTs. Includes preview, filtering, and splitting features.

Pros: Reliable brand, handles large files easily.
Cons: Slightly more expensive than competitors.

4. Shoviv MBOX to PST Converter

A powerful solution that supports batch Thunderbird to PST migration while keeping attributes intact. Also migrates emails to Office 365 or Exchange.

Pros: Multi-platform migration support.
Cons: User interface looks dated.

5. Stellar Converter for MBOX

From a leading data recovery company, Stellar’s Thunderbird to PST converter offers a guided wizard, preview options, and advanced filters.

Pros: Trusted brand, high-quality conversions.
Cons: Trial exports only a limited number of emails.

6. SysTools Thunderbird Converter

Automatically detects Thunderbird profiles and converts them to PST without Outlook installation. Supports SBD folders and keeps folder hierarchy intact.

Pros: Comprehensive features, works on Windows and Mac.
Cons: Free demo exports only 25 items per folder.

7. SysBud Thunderbird to Outlook Converter

Simple and efficient, SysBud is ideal for direct MBOX to PST conversion . Maintains complete email integrity and supports bulk migration.

Pros: Quick and straightforward.
Cons: No advanced filtering options.

8. BitRecover Thunderbird Converter Wizard

Converts Thunderbird MBOX to PST and over 30 other formats, making it perfect for flexible migrations.

Pros: Supports multiple output formats.
Cons: Might be too complicated if you only need PST.

9. Aryson Thunderbird to Outlook Converter

Beginner-friendly tool for quick Thunderbird to PST migration. Keeps attachments, metadata, and folder structure safe.

Pros: Easy for non-technical users.
Cons: Fewer customization options.

10. Manual IMAP Method (Free Option)

Sync Thunderbird emails to an IMAP-enabled Gmail account, then import them into Outlook and export as PST.

Pros: No extra software needed.
Cons: Time-consuming, risk of sync errors for large mailboxes.

Thunderbird to PST Converter Comparison Table

Final Recommendation

If you want fast and accurate Thunderbird to PST conversion , go for MailsDaddy , SysTools , or Stellar . For enterprise-level migrations, Shoviv and Kernel offer extra features like Office 365 support. On a budget? Try the free IMAP method , but be prepared for a longer, manual process.