Proven Methods to Convert OST Files to PST Format - 2026 Guide

Summary: An OST file that gets too big makes Microsoft Outlook slow down. It can make Outlook very slow, which commonly leads to lag and "Not Responding" messages. So, the easiest thing to do is to convert the OST file to a PST file so that the current mailbox doesn't have to deal with so much. In this blog post, we'll talk about the advantages of converting OST files to PST files. We will also talk about different ways to convert the OST file to PST format. The OST to PST Converter is a specific program that does mass OST conversion for enterprise-level grade migration.

Why Do Users Convert OST File to PST Format?

PST files enable users to archive old data, reduce mailbox size, and for smooth migration of email data. The following are the reasons why this migration is useful:

1. An OST file is linked to a single Outlook profile. Users can open it on other platforms by converting it to a PST format.
2. Users convert their OST files to PST files so they can maintain a copy of their emails and other email metadata that they can take with them.
3. PST files are easier to use than OST files when moving mailbox data to another account or an Outlook account.
4. Users often save their OST file as a PST file before they update to a new computer.
5. The PST files are good for storing old emails, which makes the inbox smaller.

Different Ways to convert an OST File into a PST File

Now that we've talked about the benefits of converting OST files to PST files, let's move on to the next area. In this section, we’ll execute the solutions to successfully convert the OST files to the PST file format.

Solution 01: convert Outlook OST File to PST format safe and secure

Microsoft Outlook has a built-in Auto-Archive tool that automatically converts older OST emails to PST format.

Here are the steps to begin the process:

1. Click on the File tab in MS Outlook.
2. Then, click on Advanced under Options.
3. Press the AutoArchive Settings button in the AutoArchive section.
4. Then, look for "Run the AutoArchive every X days."
5. Then, choose Archive or Delete Old Items > Move Old Items To and look for the place where you want to save the PST file.
6. Also, choose or make a new PST file and click OK.

Limitations: This method does not save the whole OST file. It does not automatically archive the calendars, contacts, and certain folders.

Manual Solution 02: Export OST to PST

In this method, users first move the mailbox data from an OST file to a PST file. It uses the built-in Import/Export feature of Microsoft Outlook to export the OST file to a PST file.

To begin, take these steps:

1. First, open the Microsoft Outlook application.
2. Then, click on File, then Open & Export, then Import/Export, and finally Export to a file.
3. Next, click on "Outlook Data File" and then "Next." Then, choose the Outlook OST file.
4. Next, select Include subfolders and browse where you want to save the PST file.
5. Click the Finish button to finish.

Limitations: The technique might not work if the OST file is lost or can't be found. If the OST file is too big, it will also slow down Outlook.

Bulk Convert OST File to PST Without Outlook Installed

The DataVare OST to PST Converter is a advanced software that makes it easy to convert an OST file made by Microsoft Outlook into a PST file. The batch convert tool lets you quickly and easily convert more than one OST file to a PST file at the same time. It also lets users convert OST files into PST files and other types of files. This has the added benefit of enabling users to preview their mailboxes after the conversion. Also, the converter has a mechanism that keeps the data safe when removing duplicate emails from several parameters.

To convert OST to PST, follow these simple steps:

1. Get the software, install it, and then open it on your computer.
2. After that, pick either Single File/Multiple Files or Select Folder and click Next.
3. After that, use the Select File option and locate the required OST file.
4. Select the folders you want to convert from the tree structure.
5. Select PST from the available list of File Formats.
6. Configure the optional features and set the saving location.
7. Finally, click Convert to start the process of converting.

Conclusion

To keep your mailbox data safe and easily accessible, it is important to convert OST file to PST format. You can use Outlook's built-in functions to conduct manual conversions, but OST to PST Converter is a more dependable way to convert OST files into PST format. With this software, you will experience 100% accuracy with your data being retained in the same condition as it was prior to conversion and free from all types of alterations. You may also download a free trial version of this software to try it out before you buy it.