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Thunderbird to Outlook conversion tool

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Thunderbird to Outlook Transfer is a perfect way to migrate Mozilla Thunderbird mailboxes and folders to PST format with an unlimited size. It allows seamless conversion of messages from Mozilla Thunderbird to Outlook without need for additional tools or manipulation, preserves the original folder structure and ensures the integrity of all converted emails.

  • Ultra-fast *.MSF data extraction and conversion engine
  • Extremely intuitive UI fully suitable for novices with no experience of cross-application data transfer
  • Automatic location of the Thunderbird mailbox folders, efficient recursive search for source data files
  • Support of mailboxes of an unlimited size
  • Data extraction from healthy and corrupted Thunderbird mail files
  • Support of all existing versions of Microsoft Outlook, including 32- and 64-bit versions
  • Direct output to an Outlook profile, *.PST or multiple *.EML files on the user’s hard drive
  • Creation of properly structured, compact PST files with option to split the output to several smaller parts


Download for FreeFor Windows 32/64-bitBuy from $24.95Unlock all features
* - The unregistered version converts a limited number of messages



Operating SystemMicrosoft Windows® Vista or higher
Microsoft OfficeMicrosoft Outlook® 2003-2021 (standalone)
Outlook AccountAt least one Outlook profile (email account) should be configured
Source files*.msf and *. (no extension) mailbox files from Thunderbird for Windows, Mac OS or Linux
Hard Drive Space48 MB minimum
Available Memory4 GB for 32-bit and 8 GB or more for 64-bit operating systems
ProcessorPentium IV 2 GHz or faster
DisplayColor display, set to at least 1024 X 768 resolution


Thunderbird to Outlook Converter selects the source folder containing MSF mailboxesThunderbird to Outlook Converter searches for Thunderbird mailboxes to convertThunderbird to Outlook Converter importing Thunderbird emails to PST


Comparison of the trial and full version

Software FeatureFree Trial LicenseHome LicenseBusiness LicenseTechnical License
Unlimited Number of EmailsNOYESYESYES
Unlimited Number of AccountsNOYESYESYES
Command Line (Batch Mode)NONOYESYES
Network SourcesYESNOYESYES
Server side useYESNONOYES
Renewal Type (by choice)-ManualManual & AutoManual & Auto
Renewal Discount-10%20%30%
Number of activations (by choice)-1-51-50Unlimited
Technical SupportLimitedStandardPriorityExtended

Best Thunderbird to Outlook Converter Features

Explore top-notch features that make our Thunderbird to Outlook Converter the best choice for smooth email migration.

Download for FreeFor Windows 32/64-bitBuy from $24.95Unlock all features
* - The unregistered version converts a limited number of messages

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Frequently Asked Questions

How to convert Thunderbird to Outlook with this software?

Install the Thunderbird to Outlook Transfer software, select the Thunderbird account storage folder, select the emails to convert, start the conversion, monitor the progress and wait for the software to validate the data for accuracy. Read more in detailed instruction.

Can I export Thunderbird to PST with this tool?

Yes, the program allows you to transfer Thunderbird mails to a file in PST format. To do this, activate the “Save to PST file” mode in the program’s “Mode” menu and run the conversion.

How do I export Thunderbird local folders to Outlook?

Briefly, here is what you need to do in order to export local folders to MS Outlook:

    1. Run the Thunderbird to Outlook converter.
    2. Browse the folder that contains Thunderbird messages in *.msf and mailbox files. Typically, the converter detects that folder automatically.
    3. Scan the selected path for all local Thunderbird email folders.
    4. Run the conversion to PST file format. This will export Thunderbird emails to Outlook data file.
    5. Open the resulting PST file in MS Outlook as usual.

Here is instruction on how to export thunderbird emails to outlook for your convenience.

Can I convert multiple Thunderbird emails to Outlook PST?

Thunderbird Transfer was initially created exactly for that. The users of Business edition may also convert emails from multiple thunderbird accounts into different PST storages at once using batch scripts.

How long does it take to export Thunderbird to Outlook?

The duration of the Thunderbird to Outlook conversion process depends on the total size of your Thunderbird files, data integrity, Outlook folder count and PC performance. Typically, it takes from 10 minutes to several hours.

Do I need Thunderbird email client for migration?

No, you do not need to have Thunderbird email application to perform the migration, it is enough to have the local Thunderbird mail data files as the source to export from thunderbird to outlook.

What can I export using the free software version ?

The free version of the software works in the same way as the registered version, but converts a limited number of e-mails, here is how properly use the free version of our software. Use our vCard to Outlook converter if you need to export contacts from thunderbird to outlook.

How to import resulting PST files in MS Outlook?

To import PST data file into MS Outlook, go to the File tab, select Open & Export, and then select Import/Export. In the new window, select ‘Import from another program or file’, select ‘Outlook Data File (.pst)’, and then follow the prompts to import your file. After that you may enter your email account settings to start using Outlook application.

Do I need a separate MSF to PST converter tool to convert Thunderbird folders?

Our Thunderbird Converter comes with a built-in MSF to PST converter, so you don’t need to use any separate MSF to PST converter tool to import Thunderbird mbox files to PST format.

Where to find Thunderbird emails?

Thunderbird mailboxes are typically stored in the profile folder of the Thunderbird application on your computer. You can access them by navigating to the menu, choosing “Help”, then “Troubleshooting Information”, and finally clicking on “Open Folder” next to “Profile Folder”.

Customer Reviews

Your comments, suggestions or ideas will be very valuable as we do not stop to make improvements to our software. Please feel free to post your rating and review about Thunderbird to Outlook Transfer product using the button below.  We really appreciate your feedbacks.

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Thunderbird to Outlook Transfer
Average rating:  
 16 reviews
 by Markus

Good tool, it is fast and accurate. But there is no German GUI, so only 4 stars from me.

 by Francois Bosse
Overall - good

Overall, the programme is good, works faster than its competitors and converts emails correctly. No encoding or attachment errors. Everything is transferred.

The bad thing is that it only converts messages, not contacts. There is another programme that converts contacts. But the good news is that you can buy both at once for a great discount!

 by PC Magazine
It's a must-have tool

As the editor of online magazine, I was impressed by the Thunderbird to Outlook Transfer software. This software offers a simple and efficient solution for transferring emails from Thunderbird to Outlook, which is a task that can be otherwise time-consuming and complicated. The Thunderbird to Outlook Transfer software is easy to use, and it offers a user-friendly interface that makes the process of transferring emails a breeze. With just a few clicks, you can transfer all of your Thunderbird emails to Outlook, including attachments, formatting, and metadata.
One of the most impressive features of this software is its speed. The transfer process is lightning-fast, and you can move large volumes of emails in just minutes. This is particularly useful for businesses or individuals who need to transfer a large number of emails quickly. What's more, the Thunderbird to Outlook Transfer software is also very reliable. The software is designed to ensure that your emails are transferred accurately and without any loss of data. This is particularly important for businesses that rely on their email communications to function effectively.
Overall, I would highly recommend the Thunderbird to Outlook Transfer software to anyone looking for a reliable and efficient solution for transferring emails between these two popular email clients. It's a must-have tool for anyone who needs to transfer emails regularly or wants to switch from Thunderbird to Outlook.

 by Alex

This is must have tool for all Thunderbird users. With help of this software I do the regular backups of my TB messages in the PST format. I have Outlook installed but I do not use it by now, however I plan to migrate to it in the nearest future, so I will be ready having all my mail by the hand in the compatible format. Your software is very easy to use and working like a charm!

 by Dave Klein
Very reasonable price!

You did an excellent job of converting my old Thunderbird email to Outlook Email. I was the victim of identity theft and it is only by a miracle that I was able to copy all the thunderbird data to a USB drive as that machine has been compromised. They seem to be able to get in via mail messages in Thunderbird even though I have Thunderbird protected. Very sophisticated thieves, with an insidious scam to get you in contact with them. Now that I have my email back, I can go ahead and delete thunderbird and all its data from the old machine in the hope that will finally end their ability to get onto the system. Thanks again for a great job at a very reasonable price! 😊

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