How to Import OST file Into Thunderbird?

Are you looking for an advanced technique to import OST to Thunderbird? your search is now over. Here we will explain the technique to import OST into Thunderbird. Simply start reading this entire article and know how to import OST files in Thunderbird without any difficulty.

MS Outlook is an email client which is available for users to perform emailing process. Outlook saves users’ profile data locally in OST files to work in offline mode. When the internet is not available, users can access their OST files on the computer. Users can read emails, contacts, calendars, and other data OST files.

Similar to Outlook there are several more email clients available nowadays. One of those email applications is, Thunderbird. It is a desktop-based email client, so it is available for a variety of platforms like Windows, Linux, and Mac. Thunderbird is a useful free email service. These are the reasons why users want to switch from other email clients to Thunderbird.

To do this migration there are both manual & automated methods. But the manual method is not safe to use, its lengthy and risky also. So, here we will describe the automated solution to convert Outlook OST to Thunderbird.

Automated Solution to Import Outlook OST to Thunderbird

A professional tool to import Outlook OST to Thunderbird-supported MBOX files is this eSoftTools OST to MBOX Converter Software. This tool will easily import data from OST into Thunderbird MBOX files without creating any errors. The tool converts single/multiple OST files at once with all mail folders. Without any restriction, users can convert any size of OST files. It can support all Outlook and Windows editions up to 10. The utility shows a live preview facility, before beginning the conversion process.

Steps to Import OST file Into Thunderbird

Download & Install eSoftTools OST to MBOX Converter Software on any Windows PC.

Click the Add single OST or Add multiple OST file button to import OST files in the Software.

Import OST files and start the scanning process to extract/load all data from OST files.

Make a selection of required folders from OST files and hit the Convert button.

From the next screen click the Export to MBOX radio button and apply the mail filter option.

Choose a destination path to save output MBOX files and hit the Convert button.

After conversion completion, users user will get new MBOX files with all Outlook OST file’s mail folders. Now, simply import the Output MBOX files to Thunderbird easily.


In this blog, we have explained the complete solution to import OST file into Thunderbird email client with the help of eSoftTools OST to MBOX Converter Software. It has a simple user interface, all users can use it easily, even he is non-technical. The software also offers a free trial pack to export OST to MBOX with 25 emails from each OST folder without paying any fee.

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