OST – Offline Storage Table – is the file format in which Microsoft Outlook stores all your mailbox data – emails, calendar entries, and other items. It is a synchronized copy of your mailbox data on the mail server. An OST file allows you to work offline. Any changes made when offline are updated, once the connection to the server is restored.
But what if your Outlook stopped working? Or you cannot open the data file anymore? In situations like these, you need to convert OST to PST to recover your emails and other mailbox items. This post will discuss a secure way to convert OST file to PST online in just a few minutes.
Reasons to Convert the OST File to PST
There are a few situations where converting an OST file to PST Outlook becomes necessary, such as:
- Outlook isn’t opening or has stopped working altogether
- You’ve lost access to your Exchange or Microsoft 365 mailbox
- The mail server is down or unavailable
- You accidentally deleted your Outlook profile
- You need to back up or migrate your mailbox data
How to Convert OST File to PST?
Outlook comes with Import/Export wizard that can convert OST to PST. But it only works when your profile is available and OST is accessible. That’s where an online OST to PST converter comes in. However, when selecting an online OST converter tool, don’t just go with the first result you find. Look for a tool that has the following features:
- Displays real-time conversion progress
- Easy-to-use interface
- Maintains data integrity after conversion
- Offers preview of converted file
- Strong privacy and security practices
Which is the Best Online Tool to Convert OST File to PST?
The online OST to PST converter tool by Stellar is one of the best tools when it comes to converting an OST file within a few minutes. It is designed to support orphaned and inaccessible OST files. It doesn’t require Outlook to be installed on your system.
It can convert all the OST file items, including emails, contacts, calendars, attachments, notes, and tasks, while preserving the original folder structure and hierarchy. It offers a straightforward and simple user interface that does not require any technical expertise to use. Some of its key features include:
- No dependency on Outlook
- HTML preview of emails and folders after conversion
- Works with orphaned OST files
- Preserves data integrity after conversion
- User‑friendly interface
- Secure online processing with encrypted data handling
- Fast conversion with minimal processing time
Now, let’s see how you can convert an OST file to PST by using online OST to PST converter by Stellar:
- Launch your preferred web browser.
- Visit the official page: https://converter.stellarinfo.com/
- Sign in to the tool.
- Click on Upload OST File.
- Browse your system, locate the required OST file, and select it.
- Then click Open. The file will begin uploading.
- After the upload is complete, click Start Conversion.
- The tool will start scanning and converting the OST file. You can monitor the progress on the screen.
- Once the conversion process finishes, you will see two options: Preview and Save PST File. You can click Preview to see the preview of the converted mailbox items in an HTML file. If you want to directly download the converted file, select Save PST File.
After you choose Save PST File, the converted PST file will be downloaded to the default Downloads folder on your system. Now, you can import this PST file into any Outlook profile using the Import/Export wizard feature and access your emails, contacts, calendars, and other mailbox data.
Note: You can convert an OST file of up to 500 MB for free. If your OST file is large, you should upgrade to the premium version (converts OST file of up to 5 GB) or go for the desktop version of the tool (converts OST without any size limitation).
Conclusion
If your Outlook is not working or the OST file becomes orphaned, then you cannot convert your OST file to PST through Import/Export wizard feature. In such situations, you can go for an online OST to PST converter tool. Stellar’s online OST converter tool offers a fast and secure way to convert the OST file to PST. You can convert OST file of up to 500 MB for free. But if your OST file is large, then you should opt its premium version or desktop-version. The desktop version – Stellar Converter for OST – can convert multiple orphaned or inaccessible OST files, without any file size limitations.
