Softaken Outlook to Thunderbird Converter — PST to MBOX

Softaken Outlook to Thunderbird Converter

An Effective Solution to Convert Outlook Mailbox Data To Thunderbird

PST to Thunderbird via MBOX Convert Microsoft Outlook .PST files into standard .MBOX files you can import into Mozilla Thunderbird — with folder hierarchy, attachments, and email meta properties retained for cross-client archiving.

(Average Rating 4.5 Based on 210 rating)
  • Smooth and Safe conversion of Outlook File Items to Thunderbird
  • Include all attachments to export from Outlook file to Thunderbird
  • Transfer all Outlook email folders into Mozilla Thunderbird
  • Fully supported with Outlook ANSI and Unicode file types
  • Direct export of Outlook data file to Thunderbird without data loss
  • Not imposed any file size limit for Outlook file to export
  • Comfortably convert password protected Outlook file to Mozilla Thunderbird
  • Folder & File mode to load multiple Outlook files in one round
  • Free Live Data Preview before export to Thunderbird account
  • Convert Outlook email items with meta properties to Thunderbird
  • Free Outlook Mailbox to Thunderbird Converter for complete evaluation
  • Date-Range and other filters to convert desired Outlook data to Thunderbird
  • 100% offline & confidential processing on your Windows PC — no cloud upload of mailbox data
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Outlook to Mozilla Thunderbird Converter – Valuable Features

pst converter

Migrate Outlook data all items

You can go with this program and smoothly import Outlook emails to Thunderbird with all details. The software smoothly considers attachments, email, contacts, notes, tasks, etc. to export into Thunderbird account. You will not face any issue with simple steps and easy interface of this effortless program.

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Data Preview Available

Prior changing from Outlook Program to Mozilla Thunderbird, the software offers quick preview of Outlook mailbox items on the screen. On the software screen, users can check every item prior exporting Outlook email messages into Thunderbird profile. By this, users can easily check accuracy of Outlook data items with this preview option.

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Outlook file remains untouched

Using this software which is designed with advanced technology, there will be no alteration to Outlook data items. The content, folder hierarchy and other data items are exactly exported from Outlook email folders to Mozilla Thunderbird. There will be no change in database structure after it is exported into Thunderbird from Outlook.

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Verified and Safe conversion

This software has been well examined by experts for accuracy and speed. On many parameters, this program has been tested well. You will not face any data loss & corruption issues with this application. Also, this program is fully functionable on all newer versions of Windows operating system such as 10, 8.1, 8, 7, etc.

simple user interface

Supported with every Outlook file

You have freedom to add & convert any Outlook file to Mozilla Thunderbird. The software well accepts locked PST with password, archived PST, ANSI (2002 or older versions), UNICODE (2003-2021), orphaned Outlook PST to migrate into Thunderbird. If you have damaged or corrupt PST file, then repair it first PST Recovery Software.

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Bulk Mode is Available

Bulk conversion is available with this utility. This means multiple Outlook data files are allowed to convert into Thunderbird profile in a single attempt. This feature is very useful for organizations and individuals having multiple Outlook files. Now, without repeating the entire process every time, users can migrate data at once.

Software Interface

Softaken Outlook to Thunderbird Converter screens — add PST files or folders, preview mailbox hierarchy, choose MBOX export, and set the save path.

Softaken Outlook to Thunderbird Converter home window

1. Home interface

Launch the tool and start from the main window to begin Outlook PST to Thunderbird migration.

Add PST file or folder mode for Thunderbird export

2. Add PST file / folder

Use File or Folder mode to browse and load single or multiple Outlook PST files for batch conversion.

Preview Outlook PST emails headers body attachments

3. Mailbox preview

Review folder hierarchy, headers, message body, and companion attachments before export to MBOX.

Choose MBOX format for Thunderbird export

4. Choose MBOX format

Select MBOX as the export format so converted Outlook data is ready for Mozilla Thunderbird.

Filters and output location for PST to MBOX

5. Filters & save path

Apply date-range or other filters if needed and set the destination folder for MBOX files.

Convert Outlook PST to Thunderbird MBOX progress

6. Convert

Start conversion and track progress while Outlook PST items export to Thunderbird-ready MBOX.

How to Convert Outlook PST to Thunderbird

Step-by-step conversion

Get detailed process to convert Outlook mailbox data to Thunderbird:

  1. Properly install the software on your system to convert PST data file to Thunderbird.
  2. Pick File or Folder mode and then upload Outlook PST file.
  3. Check all Outlook data in preview pane and hit Export button.
  4. Pick MBOX format to export data in Thunderbird.
  5. Apply filter to convert required data from Outlook file.
  6. Mention destination path for saving MBOX files.
  7. Take mouse pointer to Convert button.
Full user guideScreenshotsVideo pageSystem requirements

Tools Faq's

Get detailed process to convert Outlook mailbox data to Thunderbird.

  1. Properly install the software on your system to convert PST data file to Thunderbird.
  2. Pick File or Folder mode and then upload Outlook PST file
  3. Check all Outlook data in preview pane and hit Export button.
  4. Pick MBOX format to export data in Thunderbird.
  5. Apply filter to convert required data from Outlook file.
  6. Mention destination path for saving MBOX files.
  7. Take mouse pointer to Convert button.
Yes, there is no loss of any attachment with Outlook emails while exporting into Thunderbird.
Yes, the tool converts both Outlook ANSI and Unicode file to Thunderbird profile.
Yes, this utility provides inbuilt scan & preview feature prior Outlook PST file data to Thunderbird conversion.
Yes, Outlook to Mozilla Thunderbird Converter well supports archived file to export its data into Thunderbird.
The software converts Outlook PST data into standard MBOX files. Choose MBOX as the export format, set a destination folder for the MBOX output, then import those MBOX files into Mozilla Thunderbird (or place them in your Thunderbird profile as needed).
No. There is no necessity for having Outlook setup in the system for converting Outlook PST file to Thunderbird. The converter parses PST files locally on Windows without requiring Outlook.
Yes, the tool converts both Outlook ANSI and Unicode file to Thunderbird profile. It accepts ANSI (2002 or older versions), UNICODE (2003-2021), archived, password-protected, and orphaned Outlook PST files.
Yes. The software well accepts locked PST with password, archived PST, and orphaned Outlook PST to migrate into Thunderbird. If you have damaged or corrupt PST file, then repair it first with PST Recovery Software.
Yes, there is no loss of any attachment with Outlook emails while exporting into Thunderbird. The content, folder hierarchy and other data items are exactly exported from Outlook email folders to Mozilla Thunderbird.
Yes. Bulk conversion is available with this utility. Multiple Outlook data files are allowed to convert into Thunderbird profile in a single attempt using Folder mode. There is no imposed file size limit for Outlook file to export.
The software accepts ANSI (2002 or older) and UNICODE Outlook PST files (including 2003–2021 era mailboxes) and exports them to standard MBOX for use with Mozilla Thunderbird. It runs on Windows 11, 10, 8.1, 8, 7 and other Windows editions.
Free Demo version scans unlimited ANSI/UNICODE PST files, displays a full email preview with companion attachments, and converts the first 10 items from each Outlook folder into MBOX (Thunderbird-ready) format so you can evaluate migration fidelity before purchasing a license.

Software Specifications

System Requirement

ProcessorAny Pentium Class
Operating SystemWindows 11, 10, 8.1, 8, 7 & Other
Memory512 MB Minimum
Hard Disk100 MB free space for installation

Migration Capabilities

100% Standalone Processing Deep-scans and parses healthy, password-protected, or orphaned ANSI and UNICODE .PST files directly on your Windows PC without requiring Microsoft Outlook to be pre-installed.

Advanced PST Handling Seamlessly processes password-protected, archived, and large UNICODE PST files without freezing or truncating mailbox data during export to Thunderbird-ready MBOX.

Preserves Complete Data Integrity Retains original mailbox folder hierarchies, companion attachments, and email meta properties such as To, From, CC, BCC, Subject, date, and time.

100% Offline & Private Processing Operates locally on your Windows workstation — no cloud upload of mailbox data for complete confidentiality of your private Outlook mailboxes.

Software Delivery

ElectronicVia Email
Delivery TimeWithin 15 minutes
Demo LimitFirst 10 items / folder
Full LicenseFrom $29

Interface Available

Language SupportedEnglish
Support OptionEmails, Chat & Skype
PlatformWindows only
ProductSoftaken PST Mailbox Converter

Download Guides

Installation GuideUser ManualPurchase Related FAQs

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Demo vs Licensed Version

Free Demo version scans unlimited ANSI/UNICODE PST files, displays a 100% full email preview with companion attachments, and converts the first 10 items per folder into Thunderbird-ready MBOX format to evaluate migration fidelity before purchasing a license.

CapabilityFree DemoLicensed Version
Scan ANSI / UNICODE PST filesUnlimitedUnlimited
Full preview (emails, attachments)YesYes
Export to MBOX for ThunderbirdYes (limited)Yes (unlimited)
Items converted per folderFirst 10 itemsUnlimited
Password-protected / orphaned PSTEvaluateFull
Batch multiple PST filesLimited by demoFull
Offline local processingYesYes
PriceFreeFrom $29

Outlook to Thunderbird Client Reviews

Kenneth M. Roth

Kenneth M. Roth

★★★★★
United States
I really liked all features of this brilliant software. It helped me to switch from Outlook 2019 to Thunderbird email client with all data items in few minutes. With all attachments Outlook 2019 emails to Thunderbird are safely exported with it.
Nick K. Armentrout

Nick K. Armentrout

★★★★★
Germany
When I tried to open PST file in Mozilla Thunderbird, my friend recommended this software for the conversion. I used it and smartly export PST file emails into Thunderbird file format. I love its easy working.
Russell J. Wotring

Russell J. Wotring

★★★★★
Australia
With the free trial of this software, I have cleared all my doubts about this software. Thereafter, all Outlook data items are flawlessly converted into Thunderbird file format with the license of this tool.
Judy J. Ohalloran

Judy J. Ohalloran

★★★★★
United States
For me this is the powerful and ultimate solution to switch to Thunderbird from Microsoft Outlook. Before this, I give try to manual method but it was not sufficient to export heavy Outlook PST file data into Mozilla Thunderbird.
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