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How do I convert OST to PST?


Why was a regular email with a regular account suddenly stored in OST format?


Super User

Hi lawrenceedmunds,


There are various tools that you can use online to convert from OST to PST. I've linked one below.





There are many 3rd party applications which can do the convert for you. Example :

You need to ensure that the PST can be opened in Outlook 2016 after the convert.



To convert OST to PST use better solution known as PDS OST to PST Converter which has fewer steps to convert .ost file. Entire data remain unchanged after conversion and it is supported with any versions of Outlook.

If you are really Outstarding for such OST file Convert tool , then Recovery Fix for OST to PST Conversion tool is the good solution for you which can easily fix all your problems related OST files. The software also recovers damaged or corrupted OST data from OST mailbox and save all recovered OST file into PST format. Read More - atomtechsoftosttopstconverter


I thing you have configured an IMAP account in Outlook 2013 or above version. MS Outlook store email account data in OST file for IMAP as well as Exchange Server accounts. If you are thinking to convert OST to PST format then I will suggest you to use MailsDaddy OST to PST Converter. This is a light-weight and easy to use solution for recovering Outlook OST files to PST format. You may download free demo to give a try. 


If you want to transfer your all OST file to PST file format then use OST to PST exporter. This is the best solution to import multiple OST to PST formats quickly.


There are multiple methods to convert any OST file into PST provided you can log in to Outlook with the same Exchange profile. Some native methods to convert OST to PST are presented here:


  1. Go to Files >Open & Export and click Import & Export.
  2. Select Export to a file; then click Next.
  3. Select the second option—Outlook Data File (.pst)—and click Next.
  4. Select the folder which you want to export and click Next.
  5. Browse the location where you want to save the new PST file and choose the options regarding the duplicate items.

Note: There is an optional choice to provide a password to the PST file, but you can easily move ahead without choosing it.


Method 2: Use ‘Archiving’ to save OST emails to PST


  1. Launch the Outlook application, go to File, and click Options.
  2. Go to Advanced and click Auto Archive Settings.
  3. Now select the number of days in which you want to run auto archiving. Select the folder to save the archived file; also, provide the archiving options and finally click OK.
  4. With this, mailbox items from your OST file will be saved to the PST file as per your archiving settings.


 OST to PST Converter which is fully professional program to convert damaged OST file to MS Outlook PST format. It can also repair and restore corrupt OST data into Outlook PST file format.It also smoothly recover unreadable OST file and convert OST into PST file format with all OST file emails Meta data like: cc, bcc, to, from, date, time and subject etc.It also support all MS Outlook 2003, 2007, 2010, 2013, 2016.


Visit here:


Try a free trial version of OST to PST Converter ( and know how to you convert OST to PST files.