OST (Offline Storage Table) files cannot be opened directly in the Outlook profile or account. To open an OST file in Outlook 2016, you need to convert the OST file to PST. In this blog, we have stated an automated method to open Outlook files in Outlook 2016 by the best tool.
Overview
The OST file is created when you set up an Exchange Server, IMAP, Office 365, or Outlook.com account in Outlook. If the user account on the server is deleted or the mailbox has been disabled, then the OST files associated with the account become orphans and inaccessible.
However, you open OST files in Outlook 2016 by converting them to Outlook-supportable PST files.
Automated method to open Outlook OST file in Outlook 2016 by the best tool
The best automated method to open Outlook OST files in Outlook 2016 is the use of eSoftTools OST to PST converter software. This tool can convert orphaned, inaccessible, and encrypted OST files to different file formats such as PST, MSG, MBOX, EML, EMLX, HTML, Gmail, Yahoo, Office 365, and vCard. This software can convert OST files to PST files without the Exchange Server and Outlook 2016 on your computer with 100% precision.
Also Read:- Free OST to PST Converter by eSoftTools OST Converter
Key features
- Maintaining Data Formatting: It converts OST files to PST files while maintaining the data hierarchy and data formatting during conversion.
- User-friendly Graphical interface: The easy-to-use graphical interface converts OST to PST files smartly and quickly with a few clicks.
- Easy Preview: In the preview panel, you can view the files and folders of OST files after scanning and selecting the files/folders that you want to convert.
- Split feature: In this software, you have the option of splitting large-sized OST files into multiple small-sized PST files.
- Email filtering: It provides a feature that allows filtering emails by date.
- Naming Convention: In the naming convention, you can save emails with unique names based on Subject, Date, and From.
- File Formats: You can convert OST files to other file formats such as MSG, MBOX, EML, EMLX, HTML, MHTML, etc.
Steps to convert OST to PST files.
- Download eSoftTools OST to PST Converter Software and install it.
- Launch the software on your computer and press the “Select OST” button

- Add O ST files from local drives and load them in the OST Converter.

- In the side panel, you can preview imported OST files and folders.
- Select the necessary mailbox folders from the OST files for exporting them.

- Press the ‘Save OST’ button and select the ‘Export to PST’ radio button from the OST conversion options.
- If you want to split a converting PST file, select the ‘Split PST’ option and choose a size from the different size ranges.
- Browse the location where you want to save the PST file on your computer.
- Choose the ‘Mail Filter’ option if you want to filter email (based on date) and the Naming Convention feature.
- Click on the ‘Convert’ button and begin the process of OST to PST conversion.

Conclusion
You cannot open an orphaned or inaccessible OST file in any version of Outlook. To open and access orphaned OST, you need to convert them to PST to open them to your new email account or mailbox. With the automated method, you can convert bulk OST files to PST or any other file format. You can also migrate OST files to cloud-based applications like Office 365, Gmail, Yahoo Mail, Outlook.com, IMAP, etc.
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