How to convert a Microsoft Outlook PST file to OST

Authored by: Support.com Tech Pro Team

1. Introduction

Outlook stores this data as either  PST or an OST file, and the two formats are actually quite different.

These are the main differences between a PST and an OST file:

• OST files are usable even when your Outlook is in online mode, while  PST is a Personal storage table used for locally stored data and files
• OST files enable users the option to read, view, reply and compose emails even in offline mode, while PST files don’t

As you can see, having your data stored in an OST format seems to be far more beneficial, and that is why knowing how to convert a PST file into OST could be beneficial.

In this guide, you'll learn How to convert a Microsoft Outlook PST file to OST.

2. How to Convert

1. Open Microsoft Outlook
   
   
2. Enter File
   
   
3. Click Import and Export
   
   
4. Select Import from another program or file
   
   
5. Click Next
   
   
6. Choose Personal Folder File (.pst)
   
   
7. Click Next
   
   
8. Select the PST file from the system
   
   
9. Click Open
   
   
10. Click Next
    
    
11. Select the folder you want to import
    
    
12. Click Finish
     
13. Your PST file will e visible in the left side of the pane
    
    
14. Click the left side and create a new folder
    
    
15. Drag the emails from the PST folder to the newly created data folder
    
    

The emails should now be available in OST format for you to use as you wish.