The process of connecting Microsoft Outlook to an Exchange Server or Microsoft 365 account or an IMAP account generates OST files which enable users to work offline and synchronize their work when they regain internet access. Users need to Datavare OST to EML Converter format because they want to access their emails through Windows Live Mail Thunderbird and EML-compatible email clients.

The post will present two methods which enable users to export OST data files to EML format without any costs. The post will also explain how delivers support when free methods fail to meet your needs.
Why do users convert OST files into EML format?
The main reasons that people change OST files into EML format are:
Users transfer emails from Outlook to other email programs when they need to do so.
Every email file must be backed up by creating a separate backup of each email file.
Users who want to access their emails without using the Exchange connection require this access method.
Users who want to open emails on different systems that support EML format need this access method.
Businesses and legal entities need to access specific messages.
OST files remain inaccessible to other applications because they depend on Outlook profiles which require active connection to Exchange accounts. The conversion process to EML format becomes necessary for these files.
Method 1: Use Drag & Drop to Export Emails from Outlook (Free Method)
This method allows free execution of the process because it requires users to have Outlook installed on their system and access to their OST file.
Please follow these steps:
Begin by launching Microsoft Outlook.
The OST file needs to be connected while maintaining its synchronization status.
Navigate to the folder that contains your desired emails for export.
Select the emails which you want to send out.
Drag the selected emails to your desktop by dropping them into an empty folder.
When a user drags an email outside of Outlook it automatically saves the email in .eml format.
Pros:
The service offers complete access without any associated costs.
The process removes the requirement of additional software to achieve the task.
Users can quickly export small data sets without facing any difficulties.
Limitations:
The process requires active Outlook profile usage to function.
The process does not efficiently convert multiple items at the same time.
The process requires extensive time to complete when it handles massive mailboxes.
Users can neither transfer their entire mailbox in one operation nor proceed with mailbox export.
The process only works with active OST files.
The process gives you the ability to transfer your essential emails through this method.
Step 2: Change OST to PST, and then export to EML
Users can obtain their emails as EML after converting their OST file into PST format which serves as the second free method.
Step 1: Change OST to PST
Begin by launching Outlook.
To access import and export functions you should navigate to File > Open & Export > Import/Export.
Select the option that allows you to create a file export.
Select the Outlook Data File (.pst) option.
Choose the mailbox folder you need to access.
Keep the PST file.
Step 2: Get Emails as EML
The PST file creation process leads to the following steps:
In Outlook, open the PST file that was exported.
Drag the desired emails from PST to your computer.
Every email will be saved as an EML file.
Benefits:
The solution provides users with free access to the service.
Users can export more data than what the direct drag method allows.
The solution maintains your email layout through its conversion process.
Limitations:
The process requires users to first install Outlook for their tasks.
The system lacks the ability to process OST files that have sustained damage.
The procedure consists of multiple stages that need to be completed.
The system may lose some of its folder arrangement after processing.
The process needs extended time to finish when handling vast amounts of data.
The process allows you to transfer multiple folders but it requires you to perform specific manual tasks.
Problems with Free Methods
Although these methods are free they present certain limitations.
The methods do not assist with accessing OST files which have lost connection to their original location.
The methods cannot restore files which sustained damage.
The manual process creates an opportunity for data to become lost.
The transportation of substantial data amounts and business operations do not match this solution.
The process lacks automated capabilities to convert items from one batch to another.
Free solutions require users to have an active Exchange Server connection along with an active Outlook profile to receive operational benefits.
For reliable file conversion companies need a professional solution.
When manual approaches don't work or when you have a lot of mailbox data to deal with, you need a professional solution. enables direct conversion of OST files into EML files without requiring Outlook connection.
The This software enables users to:
Users can change OST files that have no associated parent file.
The solution enables users to transfer their entire mailbox to EML format with a single operation.
The system maintains the original folder structure of its contents.
The system protects all attachments along with metadata to maintain their security.
The process allows users to change multiple items into different formats.
Users can handle multiple items which include large or damaged files.
The process ensures data accuracy while it minimizes time requirements when compared to manual methods.
How Makes OST to EML Conversion Easier
Set up the software and open it.
Select the OST file located on your computer.
The user can review mailbox data before they proceed to export it.
Choose EML as the format for the output.
Select the destination folder for your file transfer.
To start, click Convert.
The utility processes all mailbox content while keeping the original folder setup intact.
Free methods will work for you if you need to export only a few emails from your Outlook account. Automatic techniques become more efficient when handling larger data sets or when dealing with unreadable OST files.
Conclusion
The process of converting OST data files to EML format becomes straightforward once users gain access to the file and successfully configure Outlook. The two free approaches we talked about—dragging and dropping and converting OST to EML first—work well for small needs.
The manual methods experience difficulties when dealing with OST files that are large and corrupted or orphaned. Export OST to EML file format provides users with a safe method to convert their OST files into EML format without losing any data.
Consider the size of your inbox and the quality of your files and your technology skills before you choose a method. The conversion process of your emails can be handled with free tools for small tasks while professional tools will make the process faster and safer while providing complete results.