Corbett
Corbett PST to EML Converter opens Outlook PST files on Windows and saves every email as its own EML file, in bulk or for chosen folders only. Folders, attachments and dates stay intact, and Outlook does not need to be installed. Try free demo first.
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Works offline on your PC. Corbett never sees your PST files or messages.
Free demo, scanned clean on VirusTotal and a 30-day money-back window.
Lifetime licence from $99 Demo converts 10 emails per folder
Quick answer
A PST to EML converter opens an Outlook PST file and saves every email as a separate EML file. Corbett PST to EML Converter does that offline on Windows, so Outlook mail opens in Thunderbird, Apple Mail and any client that reads EML.
What it opens
Single PST files, folders of PST files and chosen folders
What it saves
EML first, plus MBOX, PDF, HTML, TXT and CSV
Who uses it
Outlook users moving to another client and admins archiving mail
Conversion scope
A PST file belongs to desktop Outlook, while EML files open in Thunderbird, Apple Mail and many other clients. PST to EML converter reads the PST on Windows and saves every email as its own file, with your PST left as it was.
Kept in every EML
5PST input types
4Outputs
7Not needed
4One EML file holds one email
Library of Congress EML format page says an EML file typically stores a single email message in Internet Message Format, unlike MBOX that combines a folder into one file. Attachments sit inside the message as MIME content. A PST with 20,000 emails therefore becomes 20,000 EML files, so leave free disk space for the output.
Related pages: PST Converter, EML Converter, PST to MBOX Converter and OST to EML Converter. Other mail files sit on email converter tool page.
Core features
Five screens of Corbett PST to EML converter software, in conversion order.
Source files
Select Open, then Email Data Files, and add your PST files. PST to EML converter loads your mail into its panel, and no Outlook is needed.
A spare PC with no Outlook still works. PST to EML converter reads your files and leaves them as they were.
Batch loading
Select Choose Files for one PST file or a few. Select Choose Folders to load an entire directory of PST files in one step.
Loaded mail appears in one tree with a checkbox beside every item, so PST to EML converter handles many PST files in a single session. No file size limit applies.
Message preview
Click any message and a reading pane opens beside five analysis views. Use them to confirm correct mail before PST to EML conversion starts.
Content shows the email body. Message header lists From, To, Subject and Date. Properties reports item data, while hex and raw message views show the stored mail.
Output formats
Select EML under Email Files in the Export menu. The same load also exports to PST or MBOX for email files, and PDF, HTML, TXT or CSV for documents. IMAP, Gmail and Office 365 sit in the same menu for sending mail into an account.
Search by keyword first, then save only matched items. Quick search highlights hits in yellow, and Advance search checks every field or only name, subject, To, Cc and content.
Export options
Switch on open folder after export, skip greyed out folders, create empty folders and include email headers. Folders convert to matching EML folders, so your tree stays in order.
Select Browse to choose a destination, then Save. Live progress shows every folder as it converts. Need one file per folder? Open PST to MBOX Converter.
Working process
Four steps take your PST files to EML. Try them on a few files in free demo first.
Add your PST files
Start PST to EML converter, select Open, then Email Data Files and add your PST files. Select Choose Files for one file or Choose Folders for many.
Preview and select mail
Your PST folders load as one tree. Click any email to preview it, tick what you need and search by keyword to trim your PST to EML conversion.
Choose EML output
Select Export, then EML under Email Files. MBOX, PDF, HTML, TXT and CSV sit in the same menu for other jobs.
Save your EML files
Set options, select Browse for a folder and press Save. Live progress shows every folder, and Open Folder takes you to your EML files.
Moving the result into a client is covered in Import EML to Thunderbird account and Import EML to Apple Mail account.
Working process
Prefer text? Open Import EML files to Outlook for the next move with your finished EML files.
Advanced options
Small options that save hours when you convert PST files in bulk with PST to EML converter.
Bulk PST input
Many PST files convert in one session
Folder hierarchy
EML folders follow your PST tree
No file size limit
Any PST size and mail count converts
Five preview views
Content, header, properties, hex and raw message
Advance search
Name, subject, To, From and content fields
Quick search
Yellow hit highlights in the preview
Chosen items
Convert contacts, addresses or attachments only
Attachment extraction
Save attachments alone, any size
Email address extraction
Save addresses to their own file
Empty folders option
Keep the full tree, even with no mail
USB and NAS targets
Save output to external drives and network storage
Log report
See what converted and what failed
Output formats
PST to EML converter saves Outlook mail as EML, and the same load exports six more targets. Match your format to where your mail will open.
EML
One file for every message
MBOX
One file per folder for Thunderbird and Apple Mail
PST
A fresh Outlook file
Readable pages for filing and records
HTML
Messages that open in any browser
TXT and CSV
Plain text and sheets of mail details
IMAP
Mail lands in the target mailbox
Any drive
Local, USB and network folders
Free demo
Test PST to EML Converter on a Real PST File
Install free demo, load a PST file and choose EML. Free demo converts 10 emails per folder, so your output is quick to check.
Download free demoTry before you buy
Free demo of PST to EML converter opens, previews and searches your full PST file. Only conversion is capped.
| Feature | Free demo | Full version |
|---|---|---|
| Open PST files and folders | Yes | Yes |
| Preview and search | All available | All available |
| Emails converted per folder | 10 | Unlimited |
| PST size and mail count | Conversion stops at 10 per folder | No limit |
| Price | Free | From $99 one time |
Use cases
Anyone who holds Outlook mail that will not open outside the Outlook desktop.
Outlook users switching clients
PST to EML converter saves your mail as EML files that Thunderbird and Apple Mail import.
IT admins
Convert a folder of PST files to EML in one batch and hand every user a ready tree.
Legal and compliance teams
Save mail as EML with headers and attachments intact for review and discovery.
Archive keepers
EML is plain text, so PST to EML converter saves locked Outlook archives as files any program reads.
Anyone with old PST files
Open mail from a retired PC without Outlook and save it as EML.
Selective exporters
Search by sender or subject and save only the matching emails as EML.
Why Corbett
No subscription
Lifetime price from $99
Works offline
No sign-in and no upload
Originals stay safe
PST files open read only
envelope-fill
No Outlook needed
No size limit
Any PST size and mail count
Folders kept
Folders and subfolders stay in order
Smart search
Name, subject, To, From and content
30-day refund
Money-back window after purchase
Before conversion
PST to EML converter converts PST files into EML. Here is what that covers and where it stops.
| Capability | Supported | What it means |
|---|---|---|
| File to file conversion | Yes | PST to EML, MBOX, PDF, HTML, TXT and CSV |
| Folder tree | Kept | EML folders follow your PST folders |
| Outlook installed | Not needed | Files open on a PC with no Outlook |
| Source PST files | Read only | Output goes to a new folder and your originals stay as they were |
| Internet and passwords | Not needed | Conversion works offline on local files |
| Calendars, tasks, notes and journals | Not part of EML | EML holds email messages, so those items stay in the PST |
| Password protected PST | Other tool | Remove the PST password in Outlook first |
| Mac and Linux | No | PST to EML converter installs on Windows only |
Outlook or tool
Outlook saves one email at a time and offers no PST export to EML files. Here is where the manual route stops.
| Job | Manual save | PST to EML Converter |
|---|---|---|
| Cost | Free | From $99 one time |
| One email | Open and save by hand | Works too |
| Entire folders | One message at a time | Full folders in one batch |
| Many PST files | Slow and error prone | Folders of PST files in one session |
| Folder tree | Often reshuffled | Same as the source |
| Search before export | Basic Outlook search | Name, subject, To, From and content |
| Other targets | Not offered | MBOX, PDF, HTML, TXT, CSV and IMAP |
| Outlook installed | Required | Not needed |
Attachments alone come out through Extract attachments from PST file.
Global recognition
Users rate Corbett PST to EML converter 4.6 out of 5 from 683 reviews, and these software directories list it.
CNET
Download.io
UpdateStar
TopSoftware Advisor
SaaSHub
Uptodown
Specifications
Download details
System
Supported editions
Windows 11 (64 bit), 10, 8 and 7 in 32-bit or 64-bit, plus Windows Server 2016, 2012 R2 and 2008.
Start PST to EML converter with administrator rights.
Corbett has built Windows email utilities since 2020. Setup trouble and first-use questions go to our support desk.
User testimonials
PST to EML converter shares 683 reviews on software index sites and customer feedback.
Collected across 683 reviews from software indexes and customer feedback. Three reviews below are unedited.
I wanted to convert all the PST files into EML format so that it can be used in other email applications also. Since PST is a format of an Outlook application and is confined to desktop only. I was looking for an alternative option and found it was not possible manually. On recommendation, I used the Corbett software PST to EML conversion tool and i am quite satisfied with it.
This tool is a very useful automated tool. I had thousands of mails to be converted into EML format and in just few simple steps I got the desired results. I have recommended the tool to my colleagues too.
I am very happy with the software. I belong to non-IT field and perhaps had to keep a backup of my files into Eml format. It was quite challenging but when I tried the automated tool, I found it simplified and easy to use without any hassles.
Before conversion
Three short checks keep your PST to EML conversion clean.
Make a PST copy
Close Outlook and back up your PST file on a safe drive before you start. PST to EML converter opens files read only, and a spare copy keeps the original safe.
Choose all mail or chosen items
Convert every folder at once, or limit the job to contacts, addresses or attachments when only those are needed.
Leave space for EML files
Every email becomes its own EML file, so thousands of messages need a destination disk with free room.
Source PST handling inside Outlook is covered in Open PST file and Import PST to Outlook.
Best practice
A conversion only helps if your mail arrives complete. Four habits keep your data safe through it.
Back up first
Copy your original PST files before you start. Keep 3 copies on 2 types of media with 1 copy off site.
Start with one file
Convert one small PST file with PST to EML converter and open a few emails in EML. Catch a wrong setting before a large job.
Check the count
Compare the message count in the folder tree with the mail in your output before you close the job.
Keep originals until checked
Store your source PST files until counts match. Delete them only after you open converted mail.
Common questions
PST to EML converter steps, formats, limits and licence answers.
A PST to EML converter opens Outlook PST files and saves every email as its own EML file. Corbett PST to EML Converter does that offline on Windows, so PST file converter needs no Outlook.
Open PST to EML converter, select Open, then Email Data Files and add your PST file. Preview your mail, select Export, then EML under Email Files and press Save.
Library of Congress EML format page says an EML file typically stores one email message in Internet Message Format. Thunderbird, Apple Mail and Outlook open EML files.
No. Outlook has no PST export to EML files, and saving by hand moves one message at a time. PST to EML converter converts entire folders in a batch.
Yes. Select Choose Folders and load a directory of PST files, then PST to EML converter converts every file in one session.
Yes. EML output follows the order of your source folders, and the Create empty folders option keeps folders that hold no mail.
Yes. Attachments stay inside every EML file, and a separate option saves attachments alone with a file extension filter for specific types.
Yes. Advance search filters by name, subject, To, From and content, and PST to EML converter converts only matching mail.
Yes. Chosen items such as contacts, email addresses and attachments convert on their own.
Yes. Click any message and five views open: content, message header, properties, hex and raw message.
Library of Congress EML format page says Outlook, Thunderbird, Apple Mail, Entourage and IncrediMail open EML files, and so does a plain text editor. Import EML to Thunderbird account shows the steps.
Yes. Import EML to Apple Mail account shows the steps.
Import EML files to Outlook shows the steps for your finished files.
Yes. The same load exports MBOX, PDF, HTML, TXT and CSV. Convert PST to PDF shows the PDF route.
No. PST to EML converter sets no size cap, and batch mode takes many files at once. Keep free disk space for your EML output.
No. PST to EML converter reads PST files on its own, so it works on a PC without Outlook.
No. PST to EML converter opens your files read only, and output goes to a new folder.
No. Conversion happens on your PC with no upload. Corbett never sees your PST files or messages.
No. PST to EML converter installs on Windows only. Copy your PST files to a Windows PC and convert them there.
Remove the PST password in Outlook first, then load the file.
Free demo of PST to EML converter opens your files, shows every folder and gives you every search and preview. Conversion stops at 10 emails per folder, enough to test your output before you buy.
Windows 11 (64 bit), 10, 8 and 7, plus Windows Server 2016, 2012 R2 and 2008. There is no macOS or Linux build.
Personal licence covers 5 machines for $99, Business covers 25 for $299 and Enterprise covers 100 for $499. All three are one time payments with lifetime validity, 24/7 support and a 30 day refund.
PST guides
Every page below covers one PST job and answers questions it raises.
Other mail files sit on email converter tool page. Account moves use Email Migration Tool or IMAP Migration Tool, broken archives belong with email recovery software and email viewer software opens mail files free. Save a live account with Office 365 Backup Tool, Outlook.com Backup Tool or Gmail Backup Tool.
Get started
Test PST to EML Converter on a spare PST copy first. Full access is from $99 in a single payment, and refunds are open for 30 days.
Download free demo Purchase now
87.4 MB · Windows 11 to 7 and Windows Server 2025 to 2008 · 30 day money back