How to Import Outlook Data file to Thunderbird?

Last updated on October 14th, 2023 at 01:30 pm

MS Outlook is a Paid version of the MS Office package. Microsoft offers various kinds of plans and packages of MS Office for home users to corporate users. And for the latest Office365 platform, an active license is necessary for everyone to operate a single email account.While Thunderbird is an open-source email system for everyone on the modern edge. Without spending a single penny of the amount, users can easily operate and configure an unlimited number of email accounts and use it. So, lots of users asking or searching how to import Outlook data file to Thunderbird without missing any single email data.I will be elaborating on the complete knowledge of how users can import Outlook Data files to Thunderbird.  Carry on reading it to obtain a profound explanation.

User Query

Query 1. I have been using MS Outlook for a long time. There is a lot of important data stored in MS Outlook. However, I want to increase the security of my Outlook data to keep my data safe and secure as backup. That’s why I am thinking of importing Outlook Data in Thunderbird as a backup. Although I have no idea how to do this job. Does anyone know the procedure for importing Outlook Data files to Thunderbird? Please let me know.

Query 2. Recently, Our company has decided to migrate from Microsoft Outlook to Thunderbird email client due to receiving multiple errors through MS Outlook. My boss Mr. Michel finally decided to go with Thunderbird as they are an open source email client with all historical data from MS Outlook for further future use. As I am new to Thunderbird, I do not know how to do this migration. Is there any tool available for this task which completes the migration process or do we need to do something manually? Please assist me.

Need to Migration from MS Outlook

There can be multiple reasons and factors for Importing MS Outlook data into Thunderbird. Factors depend upon the people’s situation and problems. These are a couple of factors down below for importing the data of Outlook into Thunderbird:–

There can be multiple reasons and factors are responsible for switching email platforms like MS Outlook to any other. Sometimes, users face un-behaviour activity or errors received by the Outlook and sometimes are the cost effects of Outlook. The common reason behind the migration purposes are-

  • Switching Primary Email Client as Top Management decided to achieve new technology.
  • Migration required when data-files go larger in size.
  • Backup and Archive purpose
  • Un-natural error produced by MS Outlook.
  • OST/PST file Corruption
  • Email Client Preference

Why do Users often choose Thunderbird for importing?

Thunderbird is designed by Mozilla as an open-source email client which means Thunderbird is available to users free of cost. Users can download it freely. Users don’t need to purchase the license to use the Thunderbird. Thunderbird is designed to help users manage their emails, Contacts, Calendar, Inbox Items, Outbox Items, Tasks, Notes, Tasks, and so on. Thunderbird is also flexible for different operating systems: MacOS, Linux, and Windows which makes it an adaptable choice for Individuals and organizations. Most people found Thunderbird to be an easy-to-understand interface that attracts users to use Thunderbird as a primary email client.

Import Outlook data into Thunderbird with the help of PST Recovery Software

Whenever It comes to importing data, do not initiate doing so instantly without getting a complete understanding of the Importing Procedure. Here I will prescribe a secure way of Importing data. This task can be done securely without any risk of data with the Cooperation of Third-Party Software. Though there is stock of such Converter Softwares on the online platforms. Users frequently remain confused about choosing the best and most secure Software for resolving their problem of Importing data.

Best Choice “eSoftTools PST Recovery Software

eSoftTools PST Recovery software one of most popular and tech-gurus recommended tools for fixing Outlook errors and creating fresh Outlook data files.The software adopted by more than 3+ million users world-wide. The tool provide n-number of migration facilities for Outlook PST and OST files. MS Outlook to Thunderbird migration is one of the features of this software. Through the software, user can easily import PST files into fresh Outlook PST, EML, MSG, EMLX, HTML, MHT, MBOX, ICS, vCard, and also transfer Outlook data to cloud platform such as PST to Office365, Gmail, G-Suite,, and IMAP server accounts. This tool has multiple functionalities that provide more advanced facility to users like the Split feature, Email filter, Creation single PST file of all Mailfolders, and so on. This Software is freely available on online platforms at the official website (eSoftTools)

DOWNLOAD NOW       Purchase Now

Also Read – How to Import Outlook Emails to WebMail? Direct Method

Top Quality features of PST Recovery Software

  • Create Single PST for all Mailboxes

This is the amazing feature of the Software where users are provided the option of creating a single PST file for all Mailboxes. It creates one PST file in which it keeps all the data of all Mailboxes of Outlook files.

  • Preview Mailbox data

Software can provide a clear preview of each email message after scanning of Outlook PST files. Software will display the entire metadata of email messages such as content of email, To, From, Subject, Date, Time and all embedded items in the modern preview panel.

  • Direct migration from Outlook to Thunderbird

While using this software, users do not need to do any special steps to import PST files to Thunderbird as the tool automatically does this job in their Thunderbird mail folders. Users only need to scan the PST file and choose the migration option as Thunderbird and wait for a few minutes and the software automatically collects the entire mail messages and directly imports into Thunderbird.

  • Convert Outlook data Into Different File Formats

PST Recovery Software Exports Outlook data and Import into Thunderbird. Additionally, The Software also converts Outlook data into other formats like MSG, HTML, MHT, EML, Mbox, EMLX, vCard, PDF, ICS, and others. This Software gives multiple options for selecting a file format for conversion.

  • No Language Barrier 

This Software has no language barrier, Users can easily import any language data from Outlook into Thunderbird or another file format. Whether it is in English or non-English.

  • Bulk and Single PST file conversion

Users have also the option of selecting Outlook files. They can select either a single file or a bulk file (multiple PST) as their preference. And there is no size limit for conversion and retrieving data from Outlook PST.

  • Split PST files during the conversion

This feature enables users to split large-size PST files into multiple smaller files. The range of PST splitting is 1GB, 2GB, 3GB, 4GB, 5GB – 25 GB. This feature is very beneficial for those who want their files converted in multiple divisions.

Importing Outlook data to Thunderbird Process 

  • Download and install PST Recovery Software- eSoftTools in your system.
  • Then open the software and click on the Select PST Button.
  • Select one of these options “Single file conversion”  or “bulk file conversion”.
  • After the addition of PST files, click on the start scanning button.
  • Preview the Mail folders from the added PST file. You can select desired folders from the Mail folder preview Panel for importing into Thunderbird.
  • Click on the Save PST button and then You need to choose the exporting conversion option and select Thunderbird for importing.
  • Enter the location where you want to save the Outlook data in your system and click the convert button. It will Successfully save PST files into Thunderbird.

Also Read – How to Migrate Outlook Emails to Office365 Account?


Clients often need to Import Outlook Data file to Thunderbird Due to several factors. Factors depend on the person to person differently. I have described in this blog the complete procedure of importing Outlook data into Thunderbird. Users can easily do importing tasks by going through this Article. eSoftTool also provides users the free trial version of Software where users can import 25 files from every folder. After purchasing the license of Software, users can import unlimited files from every folder of PST file into Thunderbird or another desired file format.

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