How to Convert Microsoft .OST to .PST File in Outlook 2019

If you are here that means you are facing issues in OST to PST conversion and looking forward to a solution that will tell How to convert OST to PST Outlook. So, let’s start as we are all aware that Outlook is one of the most common desktop email clients, and presents high safety & easy interface

So both OST and PST files provide specific functions, sometimes users face deadlock when it comes to OST files. They cannot retrieve their mailbox information in the event of Exchange Server unavailability. So below, I will discuss the possible ways to convert Outlook OST to PST manually or using the software. But before that, you should know why this conversion is needed.

Download OST to PST Converter to Convert OST file into Outlook PST

  • Easy to export offline OST file into PST
  • Allows users to  Bulk migration
  • Secure in PST File Conversion

Why Is OST To Outlook PST Conversion Needed?

Some of the main causes why users need to convert OST to PST in Outlook 2019 include:

  1. Exchange server crash.
  2. Accidental deletion of Exchange Server account.
  3. Data Migration.
  4. Exchange server maintenance.
  5. Rebuild OST file.

Above I have mentioned some reasons why there is a need to do OST to PST conversion. Now we will discuss some methods of doing the conversion.

Different Methods How to Convert Microsoft OST to PST

Method 1: Automated Solution

As we all know that manual solutions are not secure in case of bulk migration and are even not secure for non-technical background users. So to overcome these problems try a nominated solution MailsSoftware OST to PST Converter Tool that quickly convert .ost to .pst file format. Some crucial features of the tool are given below. Using this solution users can safely export OST to PST for Outlook 2019/2016/2013, 2010

ost to outlook pst

  • Allows users to export Exchange OST files to Outlook PST, MSG, EML, MBOX, and MHTML formats.
  • Offers Date Range Filter, Naming Convention, and Preview option to make the conversion process effective.
  •  Easily recover corrupted or damaged Exchange OST files.
  • Helps to ferment heavy offline OST file into small Outlook PSTs.

Method 2: Import-Export Wizard

  1. Open the Outlook and go to the File option in the top right corner.
  2. After that tick to Open & Export and choose the Import/Export option.
  3. Choose the Export to a file>> Next from the pop-up screen.
  4. Now select Outlook Data File (.pst)>> Next. Check on include subfolders option>> Next from pop up screen.
  5. A new window will open and browse the location to store the PST file. At the end click on the end button.

Method 3: Archive OST to Outlook PST Process

  1. Install the configured Outlook and open the OST, you want to import into OST.
  2. Then go to the File menu>> info and mailbox cleanup then choose the Archive.
  3. Now check on the “Archive this folder and all subfolders” and choose the date in the Archive items older than an option.
  4. Once it has been done browse the location to store the Archive PST file on the device. At the end click on Ok.
  5.  When the process gets ends, your Outlook OST file is successfully stored in PST file format.


Above we have mentioned manual and expert solutions that will tell users how to convert OST to PST in outlook. Now it is up to you whichever solution suits try that one. Hope the article helps you out.

Read More:- Top 3 Free OST Viewer Tool to View Offline OST Files

Leave a Reply