How to Import OST to Thunderbird on Mac? – Best Solution {2024}

Sarabjeet Kaur | how to software technology | 4 minutes read | Last updated on September 15th, 2025,
import ost to thunderbird on mac

Wanting to import OST file in Thunderbird Mac OS? And, unable to find out the appropriate solution for this? Running multiple question into your mind? If yes, then, don’t worry anymore because you are standing at the correct place where you will definitely get something best. This complete blog material will help out to solve “how to import OST to Thunderbird on Mac” query without any problem. By following the blog, you will get the best opportunity to choose the Mac OST to Thunderbird Tool that can solve your all the problems related to the OST data to Thunderbird conversion for Mac. So, keep reading the every line of this blog…

Do You Know About Outlook?

The Outlook is a most popular email application available in a marketplace. It is introduced by Microsoft brand. This application is used for storing the mailbox data items like- emails, contacts, calendars, tasks, journals, etc. The default data file of MS Outlook is PST and OST.

The PST stands for personal storage table. This file is a personal data file of MS Outlook application. It is a default data file of Microsoft Outlook email client. And, if you need to export PST file into Thunderbird on Mac then, try PST File Converter Mac solution.

The OST files are regularly used by MS Outlook to store their email database information. OST file is an offline file of Outlook email client. It is created when a user wanted to work in Offline mode while remaining disconnected with the MS Exchange Server.

After getting the small idea about Outlook files, now we should proceed to the next section that explains the material for importing OST data to Thunderbird.

OST to Thunderbird for Mac Tool to Import Outlook OST File to Thunderbird Account on Mac

As we know that manual method does not exist for OST files to Thunderbird conversion, so, here we introduced the best MacMister Mac OST Converter. With this advanced tool, users from different backgrounds can simply import an OST file in Thunderbird on Mac OS. The solution does not required any technical expertise. Anyone can directly access the program and perform OST files to Thunderbird conversion process.

The Outlook Offline file to Thunderbird Mac Converter supports various benefits and features for its performers. First one is the batch function, it helps users to export bulk OST email folders into Mozilla Thunderbird application in a single go. This program comes with the simple graphical interface for all needy ones. A user will also get the facility of choosing OST folders for performing selective folder conversion process. It keeps all email properties and folder structure of emails as it is.  Additionally, it gives the facility of selecting location path for output Thunderbird data files.

Moreover, the software is a Mac as well as Windows compatible that means you can access it on all Mac and Windows versions. Also, this solution facilitates save log report facility when the conversion process is done.

After knowing the complete program, you can freely go through with its simple and easy steps to import OST mailboxes to Thunderbird.

A Quick Steps of Expert and Robust Program

Run the OST Converter for Mac Tool on any Mac machine and start the application.

Import OST data using Add Files or Add Folder button as mentioned in the screenshot. Remove & Remove All button is available, if you need to eliminate the file that you have imported. And, click Next.

In this screen, choose the Folder for conversion and again, click on the Next.

Now, get the list of multiple saving output options and choose Thunderbird. After selecting output option, add the Destination Path for Thunderbird files. And, click Export.

This will starts the live OST data files to Thunderbird conversion process on the software screen.

When the process is completed, you will get the successful message on your screen i.e. Conversion is Done. Click OK and go to check your output files.

Demo Edition Limitations

Install and launch the free trial edition and try-out with its amazing benefits. The first 25 items will be exported from Exchange OST to PST. Once you’re satisfied, you can buy the complete edition of the utility and continue batch converting OST emails, contacts, calendars, notes, journals, etc. to Thunderbird and other file formats (PDF, PST, EML, MBOX, CSV, TXT, MSG, DOC, ICS, HTML, Thunderbird, IMAP, Outlook.com, Gmail, Office 365, etc.) supported by the program.

Notable Words

Overall, I must say that a professional suggested tool is only capable to resolve the “how to import OST file in Thunderbird on Mac” issue without any stress. If you still want more clarification about the program, so make use of the free Mac OST to Thunderbird Conversion Tool.