Why Convert PST to EML? Key Advantages, Real-World Use Cases & Best Conversion Solutions
By Jennie Wilson 04-08-2026 45
Introduction
Microsoft Outlook keeps emails, contacts, calendars, and other mailbox data inside PST (Personal Storage Table) format. This format works well for Outlook users, but it is not the best option when emails need to be shared separately, accessed via other email clients, or stored elsewhere than Outlook.
Most email clients, like Thunderbird, Windows Mail, Apple Mail, and eM Client, are compatible with the EML file format. Therefore, users often export their Outlook emails to EML files when switching to another platform.
In fact, even though Microsoft Outlook does not offer many alternatives for exporting mailbox data, the process is easier with special email conversion software. Special software minimises the issues in bulk email extraction while keeping the folder structure, attachments, and messages intact.
In this article, you will find out why users convert PST files to EML format, what advantages such conversion possesses, when it can be useful, and how to carry out the process correctly.
Understanding PST Files
The PST file is the major data file supported by Microsoft Outlook for the maintenance of mailbox data on a local computer. Microsoft Outlook does not save each message individually but keeps the mailbox in one file.
This method enables users to easily conduct business correspondence and archive emails. However, the limitation of the PST file is that it makes it usable only in Microsoft Outlook.
Main Characteristics of PST Files
- Keeps entire Outlook mailboxes
- Deals with emails, notes, contacts, calendars, tasks
- Keeps the folder organisation
- Good for mailbox saving and archiving
- Special for Microsoft Outlook
Why EML Remains a Popular Email Format
By contrast, a PST file can contain a multitude of email messages, while an EML file is capable of saving one email message only. Each EML file is a complete email, containing sender, recipient, subject, message body, attached files, as well as little bits of information regarding the email.
The great advantage of the EML format is its compatibility with various email clients. You can read email messages from EML files without using Microsoft Outlook. By virtue of the fact that each message is saved in a separate EML file, you do not have to waste time organising your EML files, sharing them, or saving them in archives.
One of the chief advantages of the EML file format is that EML files can be opened by multiple email clients on the PC.
Key Features of EML file:
• One email message per file
• Attachments preserved and formatted
• Several email clients are available for EML format
• Easy sharing of separate emails
• Ideal for selective backups
PST vs EML: Which Format Fits Your Needs?
Feature | PST | EML |
Storage Type | Complete mailbox | Individual email |
Primary Use | Outlook mailbox storage | Single email message |
Compatibility | Microsoft Outlook | Multiple email clients |
Email Sharing | Less convenient | Very easy |
Organization | Folder-based mailbox | Individual email files |
Migration | Suitable for Outlook migration | Suitable for selective email transfer |
Backup | Entire mailbox | Individual email backup |
Situations Where Converting Outlook Mailboxes Makes Sense
Even though PST files are great for Microsoft Outlook users, there are several circumstances when transferring email messages to EML becomes more beneficial.
- Numerous users can migrate from Outlook by moving to software such as Thunderbird, Apple Mail, Windows Mail, or eM Client. Since this software supports EML, transferring Outlook mailbox information for migration is a much easier process.
- Instead of sending out an Outlook file, a user can only export needed emails in EML format. Such a move is beneficial for legal purposes, project communication, and communications with clients.
- Companies frequently archive meaningful conversations rather than the whole mailbox. Individual email files help achieve better organisation of long-term storage.
- Users who do not use Outlook anymore can still open EML files with the help of many free email clients, which makes email access simpler compared to using PST files.
- Many companies keep significant correspondence as separate files to meet auditing and compliance requirements.
Challenges of PST Files and How EML Helps
PST Challenge | How EML Solves It |
Requires Microsoft Outlook | Supported by multiple email applications |
Large mailbox files | Stores emails individually |
Difficult to share selected emails | Easy to send individual messages |
Outlook dependency | Greater platform flexibility |
Large archive management | Better organisation for selected emails |
What Changes After the Conversion?
Before Conversion (PST) | After Conversion (EML) |
Entire mailbox stored in one file | Every email becomes an individual file. |
Outlook required | Compatible with many email clients |
Difficult selective sharing | Easy email-by-email sharing |
Large mailbox archive | Flexible email organization |
Outlook-focused storage | Cross-platform accessibility |
Advantages of Exporting Outlook Emails to EML
The conversion of Outlook mailbox data into EML files available with an EML converter can offer great benefits to those wanted to achieve more flexibility with the handling of their email data.
- Among the benefits is a higher compatibility level. EML files allow using many desktop email clients and opening a file no matter what operating platform is used.
- The fact that one email corresponds to one separate file allows users to share only particular emails and skip sending the whole Outlook mailbox.
- Instead of having the whole mailbox kept in backup, users can keep on file only essential emails, which makes it easier for them to store the data for a long period.
- Email migrations often imply that users have to deal with separate email files rather than Outlook files. For this reason, converting emails to EML format makes the transfer easier.
- With the help of the separate files, users can organise their messages by projects, departments, clients, or even legal cases without the need to have an enormous Outlook archive.
Ways to Export Outlook Emails into EML Format
There are various methods to extract emails from a PST file and convert them into separate EML files. The selection of the appropriate technique will depend on the size of the mailbox, the quantity of emails to be extracted, as well as the degree of precision needed.
Method 1: Exporting Outlook Emails Using Microsoft Outlook
While there is no dedicated option in Microsoft Outlook to convert PST to EML, users can manually save emails from an Outlook mailbox as respective EML-compatible message files via the drag-and-drop function or through any export options that can be utilised by Windows Mail or other compatible software.
Manual process of conversion:
- Launch the Outlook mailbox that has the PST file.
- Choose the emails to be exported.
- Use drag-and-drop to export the emails into a local folder or avail of the save/export option available depending on the version of Outlook being utilised.
- Use an EML-compatible email client to import the exported emails if the need arises.
Limitation of the Manual Method
While the manual method can be useful for exporting a few Outlook emails, it becomes inefficient when working with large PST files or multiple folders. It is time-consuming, requires Microsoft Outlook, and can not preserve the complete mailbox structure, making professional conversion tools a more practical choice for bulk email migration.
Method 2: Advanced Software for EML to PST Conversion
Email conversion software does the whole task for you, including retaining information about attachments, folder hierarchy, metadata, and the current layout of emails. Such tools can be really helpful for corporate users, IT specialists, sometimes even ordinary users who work with extensive archives of emails.
GainTools PST to EML Converter
GainTools PST to EML Converter is a tool to save Outlook mails as separate EML files without modifying the original mailbox. It supports bulk conversion, thus apt for individual and professional migration.
Main Features
• Convert many PST files to EML at once.
• Retain the structure of the folders.
• Preserve email formatting.
• Allows the conversion of Outlook PST files only.
• User-friendly interface.
• Works on all Windows versions.
Pros
• Simple to operate.
• Can do bulk export of emails.
• Preserves attachments and email properties.
• Retains original folder structure.
• Quick processing of Outlook PST files.
Cons
• Trial version has restrictions.
• To use the full feature set, one needs to buy a license.
Softaken PST to EML Converter
Softaken PST to EML Converter is a trusted solution for users wanting to export their Outlook emails with their original mailbox structure intact. The application is designed to work with both small and large PST files easily.
Main features
• Transfers all Outlook mailbox data into EML format.
• Batch processing capability.
• Preservation of the folder structure and email properties.
• Attachments remain in place during the conversion process.
• Compatibility with different Outlook versions.
Pros
• Works for individual as well as corporate users.
• High accuracy in email conversion.
• Fast operations.
• Original email format is retained.
• Simple installation and usage.
Cons
• Trial version has some limitations.
• Advanced functionalities are available only in the paid version.
Method 3: Convert PST Files Online
For users who need to convert just a few Outlook emails and do not want to deal with desktop conversion tools, the web-based conversion tools can be an effective solution.
FreeConverter.app Online Conversion Tool
FreeConverter.app is a web-based service allowing users to export their Outlook mailbox data to EML format. Because all the processes happen online, any user can access the service from any device connected to the internet.
Main Features
• No software installation required.
• Easy uploading process.
• User-friendly interface.
• Browser-based solution.
• A good option for occasional conversions.
Pros
• Available anytime and from anywhere.
• Can help to perform required conversions extremely quickly.
• Easiest solution for new users.
Cons
• Internet connectivity can be an issue at times.
• Not effective when a user wants an advanced solution for conversion.
Conclusion
While PST files are perfect for storing entire mailboxes in Outlook, they can not be the best choice for accessing individual messages or for compatibility. Exporting Outlook emails in EML format helps share emails, move to other email services, and save important messages.
Manual export can be a way for those who wish to export limited emails, yet it is not the best way for larger mailboxes. There are also professional tools for exporting emails in bulk while keeping folder hierarchy and attachments intact, such as GainTools PST to EML Converter and Softaken PST to EML Converter. In addition, users who only occasionally need to transform the file can opt for online tools.
Frequently Asked Questions (FAQ)
Q1. Can I save my attachments while changing?
Ans. Certainly. Most professional email conversion applications ensure that email attachments, email formatting styles, and the folder structure are preserved during the process.
Q2. Can I open EML files with software other than Outlook?
Ans. Absolutely. EML files can be used in several email clients such as Thunderbird, Windows Mail, Apple Mail, eM Client, etc.
Q3. Is the manual method of exporting messages appropriate for large PST files?
Ans. No. The manual exportation process works only with small emails. For large file exportation, dedicated software is typically more effective and reliable.
Tags : PST to EML PST file to EML format
