How to Convert OST to EML Files? Learn Simple Methods

  

Rollins Duke   
Published: April 25th, 2025 • 7 Min Read

If you are worried about the way to convert OST to EML? Then your finds ended here. In this guide, we will explain about manual and OST to EML Converter to fix this process effectively.

Microsoft Outlook stores its data locally in an OST file that allows users to access emails, contacts, calendars to access it offline which helps for continuous productivity without worrying about connectivity. It will reflect changes when connectivity is restored. But when OST gets an orphan or deleted Outlook account then OST files are not easily, making it difficult to open or migrate them to other email platforms.

EML files are simple, lightweight and widely supported by various email clients such as Thunderbird, Windows Live Mail, Apple Mail and many more. By choosing to Convert OST to EML, users can ensure better accessibility, improved portability, and the ability to archive or share individual emails without relying solely on Outlook.

Why Convert OST to EML?

• OST files are tied to specific Outlook profiles and Exchange accounts. Once disconnected they become difficult to open. It allows users to access their mailbox data independently of Outlook.
• EML is a widely acceptable format by several email clients such as Thunderbird, eM Client, Windows Live Mail, and Apple Mail.
• EML stores individual email messages which makes it perfect for organizing, storing and backup emails individually. It’s especially beneficial for legal, forensic or compliance purposes.
• Unlike OST files, It can be easily attached or shared via email or file transfer platform. It provides greater control and portability for specific messages.
• In cases where the original Outlook profile is no longer accessible or OST file is orphaned or corrupted, It can help to recover valuable data without losing any bit of information.
• EML files are text based and readable across multiple platforms and systems. This makes them ideal for users who need to access their emails on both Windows and Mac OS without using Outlook.

Manual Methods to Convert OST to EML

If you are looking for the way to convert OST files to EML manually then we you follow the approach as we have explained below:

1. Firstly, Open Microsoft Outlook with active OST profiles.
2. Then, Select and drag the desired emails to a new folder on your desktop. This will create an MSG file.
3. Now, Open Mozilla Thunderbird and drag and drop MSG file into Thunderbird.
4. Once imported, right-click on the email in Thunderbird and Save As and choose file type as EML file.

Shortcomings of Manual Methods

• Only workable when Outlook is functional and linked to the original OST file.
• This approach is not reliable for batch email or entire Outlook mailbox conversion.
• Drag and drop method may result in loss formatting or metadata will not be maintained.

Steps to Convert OST to EML Files

Watch the online video to learn the easy steps:

How to Export Outlook OST Files to EML Files?

1) First of all download BitRecover OST File Converter Software which has an isolated option to extract Offline Storage Table emails into EML format so it is also known as OST to EML Converter.

2) Run recommended software, it is able to add OST files automatically from the default storage location of your Microsoft Outlook. Users can also add OST files / folders manually in case of no Outlook is installed on the computer.

3) OST to EML Converter shows all OST folders in the software interface, users can choose all folders as well as specific folders for conversion.

4) The tool offers 30+ saving formats, you can choose EML as saving format to convert OST to EML.

5) Choose a file naming option to manage resultant EML files in multiple professional styles with this OST to EML Converter.

6) This toolkit is capable to choose “Computer Desktop” as destination path automatically but it also gives freedom to change the destination path according to the choice of users. Press the Next button to start the conversion process.

7) Outlook OST file to EML migration process is running, it will take a very short time.

8) Microsoft Outlook / Exchange Server OST file converted to EML format, the tool is showing a message of completion, now press Ok button to confirm.

9) After completion of the task OST to EML Export Tool will automatically open the destination path. So, users can get the resultant data without efforts. Here, you can see your resultant data in .eml format.

OST to EML Converter Attractive Features

• Convert Large OST Files to EML – The automated solution is specially designed for completing home and corporate needs. There is no size limitation as the tool is compatible with large sized Offline Storage Table files.
• Extract Emails from All OST Files – This application is consistent with all types of OST files so users can easily convert their encrypted, corrupted, compressible OST files to EML format.
• Migrate Deleted Email Successfully – The tool has an inbuilt advance scanner which is capable for scanning OST files deeply and recover OST files deleted emails and save them into EML format.
• Convert Selective Folders – After loading OST files in the software interface, the tool previews OST folders in the software panel. Users can choose specific folders for converting .ost to eml format.

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• Export with 100% Accuracy – This application provides 100% accurate result and creates generic resultant EML files which will be compatible with Windows Live Mail, Thunderbird, Outlook Express, eM Client, etc.
• Freedom to Store Resultant Files – BitRecover OST to EML Converter is a fully automatic software which is capable to choose data storage location automatically on Desktop but users can also select different destination path too.
• Outlook, Exchange and IMAP OST Supportable – OST files to EML Export Tool support conversion of Microsoft Outlook 2021, 2019, 2016, 2013, 2010, 2007 OST files to EML, Exchange Server 2019, 2016, 2013, 2010, 2007.
• Multiple File Naming Options – Also, this application comes with multiple file naming options, users can export OST file to EML format by selecting relevant file naming option i.e. by date, time, subject, from, auto increment, default, etc.
• Export OST Data to EML with Email Items – OST to EML Migration Tool keeps email attachments, to, cc, bcc, subject, signature, date, time, header, footer, deleted emails, text formatting, etc. during conversion process.

Tips for Successful OST to EML Conversion

• Before starting make a copy of the OST file. This precaution helps you to recover your account if anything goes wrong during the conversion.
• If you’re converting an entire mailbox, choose a method or tool that preserves the folder hierarchy to keep your email organization intact.
• Check email clients such as Thunderbird, eM Client supports EML format. Most do but always verify before import.
• For large or orphan OST files, you can opt OST to EML Converter as it allows batch conversion with maintained metadata.
• Check that the system remains stable or uninterrupted during the process, especially when dealing with a large volume of emails or attachments.

Frequently Asked Questions

Que 1 – Do I need to install Microsoft Outlook on my computer for converting .ost to .eml format ?

Ans – There is no matter, our tool works without Microsoft Outlook installation, it requires only OST (Offline Storage Table) files for conversion.

Que 2 – How to export OST data to EML files with attachments ?

Ans – Follow the steps for OST files to EML Conversion:

1. Launch the OST to EML Converter Tool.
2. Load Outlook / Exchange / IMAP OST files to convert.
3. Now, use the recovery mode for getting missing folders.
4. Preview entire mailbox items before starting migration.
5. Choose EML format to start Export process.

Que 3 – Can I extract OST to EML format in bulk using your software ?

Ans – Yes, this application is well-suitable to convert multiple OST files to EML format with the fastest speed.

Resolution

The OST to EML Converter free software gives permission to export 25 emails from each OST folder to EML format. This is helpful to get complete satisfaction before upgrading to the pro edition. Also, users can easily check software features before purchasing the license keys. If you want to get more information about the product, then feel free to contact our support team.