How to Convert OST to MBOX Files? Smart Solution

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OST and MBOX are the two file types that use for saving users’ mails and other data. Outlook save all emails, contacts, calendars, and other users’ mailbox folder/items in a single OST file. MBOX is also data storing file type that most email clients use for saving mails folders separately. Nowadays various users require to Convert OST to MBOX files. So, to help those persons who need to Convert OST to MBOX we have written this blog post.

Here we will talk about the reasons, benefits, and the best technique to convert OST to MBOX format? Let’s start.

Why do Users Need to Convert OST to MBOX files?

Users may need to export Outlook data from OST to MBOX files for a variety of reasons, including:-

  • When users need to switch from Outlook Email Client to another application like- Thunderbird, Apple Mail, etc.
  • For saving all mail folders separately from Large Outlook OST data files.
  • To recover and move emails from orphaned or inaccessible OST files.

Best Way to Convert Outlook OST to MBOX file format

To export and save emails of Outlook OST to MBOX files is using automated OST to MBOX Conversion tools. Many OST to MBOX file conversion utilities are available on the internet, you should use the best tool in all of them. 

The most recommended software by every IT expert is this SysInspire OST Converter Software. Using this utility you will get the ability to quickly convert corrupt/orphaned/inaccessible/encrypted OST to MBOX file format by applying some reliable steps. After conversion software will provide MBOX which will work in Apple Mail, Thunderbird, and all other supported email clients. 

How to Convert OST to MBOX files using OST Converter?

Firstly, click the download button and add OST Converter application to your windows machine. Then follow the instructions mentioned below to convert OST to MBOX format:-

  1. Install and Launch OST File conversion tool.export ost to pst
  2. Press the Select OST button and choose Single or Batch File conversion mode. (as per requirement)
  3. Add OST files in the software and hit the start scanning button.export wlm calendar
  4. Scan OST file repair corruption errors and Load all its inner folders and items.export ost file to pst
  5. Now choose the necessary folders from OST file and press the Save OST button from the menu bar.export ost to pst
  6. Next, select the Export to MBOX radio button from conversion options.ost recovery
  7. Use the Mail filter option to filter emails by date and select a location to save resultant files.
  8. In the final step hit the Convert button to start the OST to MBOX conversion and save all mail folders from Outlook OST to MBOX files.

What are the features of OST to MBOX Converter Tool?

  • Automatedly Convert Exchange/Outlook OST files to MBOX file format with a quick process.
  • Supports converting corrupt/inaccessible/encrypted/orphaned Outlook OST without difficulty.
  • Maintains the OST file’s integrity and uniqueness during converting.
  • Offers the option of a single OST file as well as batch mode conversion.
  • Software Platform with an easy-to-understand and user-friendly User Interface.
  • Save the resulting MBOX file to the user’s specified location in their computer’s local drive.
  • Supports all Microsoft Windows Operating Systems editions (Up to Windows 10 32-64 bit).


In this post, we’ve shown the best process to do the task of OST to MBOX Conversion. Now users can quickly follow the above-mentioned steps to quickly solve their query “How to Convert OST to MBOX files”. Above we have used the SysInspire OST Converter Tool which will allow you to convert OST files in single as well as batch mode. For a quick demo, users can also get its free trial edition of OST to MBOX converter, in order to test its functionality. 

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