OST is an Outlook file that contains offline Outlook data like emails, contacts, calendars, notes, tasks, etc when Outlook is not connected to the internet. Despite many benefits of Outlook some users want to convert OST files to EML format. Don’t worry in this blog we have described an automated method to convert OST files to EML file format.
Overview
Outlook OST files store all Outlook mailbox data when offline. It syncs with the exchange server when Outlook is connected to the internet. However, the OST file doesn’t open in Outlook when it is disconnected from the exchange server. OST file becomes an orphan when it is not able to connect with the exchange server.
EML files store single email messages with attachments. It is supported by many email clients like Mozilla Thunderbird, Windows Live, Apple Mail, Microsoft Outlook and more.
Reasons to convert OST to EML files
- EML file is supported by many email clients and cloud-based applications that’s why so many users want to convert OST files to EML format.
- EML files are small in file size so their sharing is easy so users want to convert into EML format.
Smart Solution to convert OST to EML files
The smart and most automated method to convert OST files to EML format is the eSoftTools OST to EML converter software. With a few clicks, you can convert OST to EML format with this tool. You can convert OST to EML format without the installation of Outlook installed on your system. There is no need for any third-party application to convert OST to EML.
Read Also:- How Export Email from OST To EML file?
Best and Attractive features of the software
- Easily converts inaccessible, orphans and encrypted OSTÂ to EML files.
- Converts multiple OST files to EML format at a single time.
- Provides the preview of all the files/folders of the mailbox in the OST file in the preview panel.
- Allows to convert OST files to EML format and other file formats.
- Capable of migrating OST files to other cloud-based applications like Microsoft 365 (Office 365), Outlook.com, Gmail, Yahoo Mail, and IMAP applications.
- Supports OST files of all editions of MS Outlook 2021, 2019, 2016, 2013, 2010, 2007, and below editions.
- Compatible to work with all editions of Windows Operating System like Windows 11, 10, 8.1, 8, 7Â & below versions.
Step-by-step approach to convert OST to EML
- Download and install eSoftTools OST to EML converter software in your system.
- Click on the Select OST button on the above menu bar to add OST files to the software.

- Click on the Select file button to add OST, PST, and NST Outlook files into the software, and click on Start scanning process.
- Click on the Save OST button, and a new window will appear on the screen.

- Preview the loaded files and folders of the OST, PST, and NST files in the preview panel and select the files and folders to be converted into MBOX files.

- Choose the Export to EML option from the list of options seen on the screen by clicking on the radio button.
- Apply Mail filtering ( To filter emails according to Date Range (From and To)) and the Naming convention (Save emails with unique names based on Subject, Date, and From) feature if you want to apply.

- Browse the location where you want to save the resultant MBOX file.
- Click on the Convert button to start the conversion process from OST to EML files.

Conclusion
In this blog, we have discussed reasons and automated methods to convert OST files to EML format. There are manual methods also available but they are complex and require technical knowledge. In the demo version, you can convert 25 emails from each folder to an EML folder and if you get the desired result you can purchase the licence.
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