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How to Export Outlook OST Emails to MBOX without Application Dependency ?

Admin ~ Published: 20-Jun-2020 ~ Convert Data ~ 5 Minutes Reading

It becomes difficult for professionals when they have to convert OST to MBOX without Outlook / Thunderbird / Entourage / Mac Mail. Obviously, it is not possible that all the time people must be having supportive email clients to convert OST file to MBOX format.

In such situation, it is important to have an independent solution to export orphaned OST file to MBOX. The approach should not be affected by the presence or absence of Microsoft Outlook and MBOX-file supporting email apps.

Seems as if you are thinking that does such kind of standalone technique exists? Is it really possible to export Outlook OST file to Thunderbird MBOX without any supportive apps?

Well, you will be happy to know that we have an idea to your problem. Yes, there exists an application named as OST to MBOX converter. This software is purposely designed to convert OST file to MBOX. We’ll tell you more about other solutions later but, as of now let’s see how you can use this direct technique for your purpose.

Convert OST to MBOX in an Effortless Way

Followings steps will show you the correct path towards the OST to MBOX conversion in a struggle-free manner :

  • Download the setup file of OST to MBOX converter and install it.

download software

  • Once the installation gets finished, run the software. Begin with the procedure to convert OST to MBOX by clicking on Open File >> Choose From a Folder>click open tab
  • A new window prompts where you have to locate the path for OST file. Select it and click on Open button.browse ost files
  • The OST to MBOX file exporter tool begins fetching content from the browsed .ost file. It automatically loads all the fetched data on the preview panel. The items are loaded in a systematic manner. You can view the data folders, emails, address book details, etc., before converting OST file to MBOX.preview ost files
  • Continue with the process of converting OST to MBOX by clicking on Export. This launches a menu where you have to select MBOX option.select mbox files
  • Browse and select location to save the output. Finally, click on Save button to initiate the procedure in OST to MBOX converter.click save to convert ost to mbox

Officials have to view resultant MBOX file by importing it in supporting email applications. They can also opt for free MBOX viewer to read the content of converted OST file. Moreover, the software works in absence of Exchange Server connectivity and allows users to complete the task independently.

OST to MBOX converter is designed with latest algorithms. These algorithms ensures the accuracy level of data during the conversion procedure. In other words, we want to say that there will be no information loss or content manipulation while converting OST file to MBOX via this approach. Even the folder hierarchy will be same in resultant MBOX file.

Well, You Can Also Convert OST to MBOX Manually

The solution that we told readers in the above-section comprises of direct technique to export Outlook OST file to Thunderbird MBOX. But, it is our responsibility to tell that there exists an indirect and manual approach to export OST file to MBOX. This method essentially demands for the installation of Microsoft Outlook and Thunderbird email app. It will not work unless both these apps are not available on a PC.

If you are eager to implement the manual procedure to convert OST file to MBOX, execute following steps :

  • Launch Outlook with Exchange server connectivity in it. Click on Files to proceed further.
  • Select Open & Export option and then, click on Import & Export
  • This opens a wizard where you have to select Export to a File. Hit Next.
  • Here, you have to choose Outlook Data File option and click on Next.
  • Choose the folders that you wish to save in exported PST file. Hit Next.
  • Define the path to save new PST file and select the options associated with it.
  • Finally, click on Finish button to begin the procedure of OST to PST conversion.
Now, you have received PST file from source Microsoft Outlook email client. Its time to import this PST file in Thunderbird. For this, you have to implement following steps :
  • Continue with second phase of the manual procedure to convert OST to MBOX by opening Thunderbird on your system.
  • Navigate towards the Tool section and click on Import option.
  • This opens a window where you have to choose Mail.
  • Also click on Next and select Outlook file type option.
  • Hit Next to begin processing of emails and show results.
  • Finally, click on Finish button to close the current window.

Experts will observe that all email folders get automatically archived under a local folder directory. However, there is no assurance that the manual process to convert OST file to MBOX will definitely work. It is just a hit and trial method that may be successful or unsuccessful. Chances of data loss and harm to information integrity are high in this process.

Warning = Implementation of manual procedure to convert OST to MBOX is at your own risk. There is no computer user who guarantees that this solution will definitely work.


The blog tells professionals about OST to MBOX converter, which is a dedicated solution to export Outlook OST to MBOX. It enables officials to directly convert OST file to MBOX without any application dependency issues. Interested candidates can examine the demo version of the software to check the working pattern and performance of the tool.