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DT PST Converter
Convert and Migrate Outlook PST Files to 20+ Formats
DT PST Converter is a Windows tool that converts Outlook PST and OST files into 20+ formats such as PST, PDF, MBOX, EML, MSG, HTML, DOCX, ICS, VCF and CSV, and migrates data to Office 365, Gmail, Zoho, Thunderbird and other mail accounts. It supports healthy as well as corrupted or damaged files, works without Outlook, keeps your folders and attachments intact, handles batches of any size, and finishes the job fast.
- Convert to 20+ file formats including PDF, MBOX, EML, MSG, HTML, DOCX, CSV, VCF and ICS
- Supports both PST and OST files from all Microsoft Outlook and Exchange versions
- Recovers and converts healthy, corrupted, damaged, or orphaned Outlook data files
- Direct mailbox migration to Office 365, Gmail, Google Workspace, Zoho Mail and IMAP servers
- Works 100% standalone with zero Outlook installation required for single or batch archives
Quick Summary:DT PST Converter converts healthy and corrupted Outlook PST and OST files into more than 20 formats including MBOX, PDF, EML, MSG, and HTML, or migrates mailboxes directly to Office 365, Gmail, Zoho, and IMAP servers. It processes single or batch files of any size without requiring Microsoft Outlook, keeping every folder structure, header, and attachment intact.
Why DT PST Converter
Every PST converter in the market lists the same formats and the same features. What decides the purchase is how the job actually feels: how long a 20 GB mailbox takes, whether the folder tree comes out the way it went in, and whether the tool asks you to install Outlook or switch off your antivirus first.
DT PST Converter is built around that experience. It reads PST files directly, so Outlook is not needed. It converts in bulk, so a folder full of PST files is one job and not fifty. And it is fast, so a conversion that usually means leaving the PC running overnight becomes something you finish before lunch.
Key Features of DT PST Converter
Convert healthy and corrupted Outlook PST and OST files into 20+ file formats, including PDF, MBOX, EML, MSG, HTML, DOCX, CSV, VCF and ICS.
Integrated recovery engine rescues damaged, unreadable, or truncated files without scanpst.exe.
Dual compatibility for both Outlook personal folders (PST) and offline storage files (OST).
Migrate PST data straight to Office 365, Gmail, Yahoo Mail, IMAP servers and other email accounts.
Convert single PST files or an entire folder of PST files in one batch.
Work without Microsoft Outlook installed on the computer.
Read both ANSI and Unicode PST files from every Outlook version.
Open password-protected PST files for conversion.
Preview emails, attachments, contacts and calendars before saving anything.
Keep the original folder hierarchy in the converted output.
Preserve email headers, formatting, inline images and attachments.
Choose how attachments are handled: keep them inside, save them separately, or skip them.
Filter by date range, sender, recipient, subject, folder and item type.
Export contacts to VCF and CSV, and calendars to ICS.
Convert emails to PDF with attachments and readable formatting.
Rename output files with custom naming patterns to stay organised.
Run a fast, light conversion engine that handles large PST files without freezing the system.
20+ Output Formats Supported
One PST file, as many destinations as you need. DT PST Converter turns Outlook data into formats that open on any device, in any mail client, and in any document app.
| Category | Formats |
|---|---|
| Email file formats | PST, MSG, EML, EMLX, MBOX, MHTML |
| Document formats | PDF, DOC, DOCX, DOCM, RTF, TXT, HTML |
| Image formats | PNG, JPG, GIF, TIFF |
| Contact and calendar formats | CSV, VCF (vCard), ICS (iCalendar) |
| Email accounts and servers | Office 365, Gmail, Yahoo Mail, IMAP, Outlook.com, Thunderbird, Zoho Mail, iCloud and more |
That covers every common reason to leave PST: opening mail on a Mac, archiving to PDF, importing to Thunderbird or Apple Mail, moving to Gmail or Microsoft 365, or simply reading old mail without Outlook.
What Data Can You Convert from a PST File?
A PST file holds far more than emails. DT PST Converter reads all of it.
Emails
Inbox, Sent Items, Drafts, Deleted Items, Archive and every custom folder, with To, From, Cc, Bcc, subject, date and priority.
Attachments
Word, Excel, PDF, images, ZIP files and embedded objects stay linked to the right message.
Contacts
Names, phone numbers, email addresses, companies and job titles go to VCF or CSV.
Calendars
Appointments, meetings, locations and reminders go to ICS.
Tasks, notes and journals
Exported with their dates and details intact.
Feature Deep-Dives
Convert PST to PDF with Attachments
Need a copy of an email thread that opens on any device and cannot be edited by accident? Pick PDF as the output and DT PST Converter turns every email into a clean PDF page with headers, body and inline images in place. Attachments can sit inside the output folder or be converted to PDF themselves, which suits legal teams, auditors and anyone who archives for compliance.
Convert PST to MBOX for Thunderbird, Apple Mail and More
MBOX is the common language of non-Outlook mail clients. Choose MBOX and the tool builds MBOX files that follow your folder structure, ready to import into Thunderbird, Apple Mail, Entourage, Evolution and other clients. Your Inbox stays your Inbox and your subfolders stay subfolders.
Convert PST to EML, EMLX and MSG
Sometimes each email needs to be its own file. DT PST Converter saves every message as an individual EML, EMLX or MSG file with the attachments embedded. Use EML for general sharing, EMLX for Apple Mail, and MSG when the message has to reopen in Outlook later.
Convert PST to Word, HTML, Text and Image Formats
Pull emails into DOC, DOCX, RTF, HTML, MHTML or TXT for editing, searching or publishing. If you need pictures of messages for records, export to PNG, JPG, GIF or TIFF. Each format keeps the message text, sender details and date so the context is never lost.
Migrate PST to Office 365, Gmail and IMAP
Conversion is only half the job for many users. When a company moves to Microsoft 365 or a person moves to Gmail, the mail has to land inside the new mailbox. Choose the email account as the destination, sign in, and DT PST Converter uploads the PST data folder by folder. Your old mail appears in the new account with the same structure it had in Outlook.
Batch Convert Multiple PST Files at Once
Add a single file, select several, or point the tool at a whole folder. Every PST in the list is converted in one run with the same settings. There is no limit on PST file size and no limit on the number of files, so a shelf of old archives becomes one afternoon of work, not a week.
Fast Conversion for Large PST Files
Large PST files are where most converters slow down. DT PST Converter is built to read and write quickly, keeps memory use low, and stays responsive while it works, so you can keep using the computer. The progress screen shows what is being converted in real time, so you always know how far along the job is.
Preview Before You Convert
Before a single item is saved, the preview pane shows the full folder tree with emails, attachments, contacts and calendars. Click any message to read it. Tick only the folders you need and leave the rest. Nothing is converted blindly.
Selective Conversion with Smart Filters
A 40 GB archive rarely needs to be converted in full. Use the date range filter to take only a year or a quarter. Filter by sender, recipient or subject to pull out one client's emails. Exclude folders like Deleted Items or Junk. You save time, disk space and the effort of cleaning up afterwards.
Three Ways to Handle Attachments
Different jobs need different attachment handling. Keep attachments inside the converted email, save them separately in their own folder, or convert emails without attachments to keep the output light. Choose per job, not per product version.
Contacts and Calendars Without Outlook
Export your address book to VCF for phones and mail apps, or to CSV for spreadsheets and CRMs. Export calendar events to ICS and import them into Google Calendar, Apple Calendar or any other app that reads the standard format.
Works Without Outlook, on Every Windows Version
DT PST Converter does not depend on Microsoft Outlook, so it works on a PC where Outlook was uninstalled, a server that never had it, or a laptop that only holds the old PST files. It supports ANSI PST files from Outlook 97 to 2002 and Unicode PST files from Outlook 2003 onward, including Outlook 2021, 2019, 2016 and Microsoft 365.
Why Do People Convert PST Files?
Leaving Outlook
Moving to Thunderbird, Apple Mail or another client means the PST has to become MBOX or EML first.
Moving to the cloud
Companies shifting to Microsoft 365 and individuals shifting to Gmail need their old mail inside the new mailbox.
Archiving and compliance
PDF is the safest long-term format for legal, financial and audit records.
Opening old PST files without Outlook
Former employees, closed offices and inherited archives often leave PST files nobody can open.
Splitting oversized data
Outlook slows down and can fail on very large PST files. Converting in parts and by date keeps each piece manageable.
Sharing specific emails
Sending a few messages from a huge mailbox is easier when they are saved as separate EML, MSG or PDF files.
Outlook Export vs DT PST Converter
Outlook can export some data on its own, but the options are narrow.
| Task | Outlook built-in | DT PST Converter |
|---|---|---|
| Needs Outlook installed | Yes | No |
| Support both PST and OST files | PST only (cannot export OST directly) | Yes, both PST and OST |
| Convert corrupted or damaged files | Fails, requires scanpst repair | Yes, built-in recovery engine |
| Export a PST to PDF in bulk | No, one message at a time | Yes, entire folders in one run |
| Export to MBOX | No | Yes |
| Export to EML or EMLX in bulk | Manual drag and drop | Yes, automatic |
| Migrate PST to Gmail or Office 365 | Limited and slow | Direct, folder by folder |
| Convert many PST files together | No | Yes |
| Filter by date, sender or subject | Partial | Yes |
| Preview before saving | Inside Outlook only | Yes, inside the tool |
| Works on a PC without Outlook | No | Yes |
How to Convert PST Files with DT PST Converter
Download DT PST Converter, install it and launch it on your Windows PC.
Click Select Files or Select Folder and add one PST file or many.
Review the folder tree and the message preview. Tick the folders you want.
Choose the output: a file format such as PDF, MBOX, EML, MSG or DOCX, or an email account such as Office 365 or Gmail.
Set the optional filters, attachment handling and file naming, then pick the destination folder.
Click Convert. A progress screen follows the job, and the output opens in the destination folder when it finishes.
How to Migrate a PST File to Office 365 or Gmail
Launch DT PST Converter and add your PST files.
Select the folders to move, or leave everything ticked.
Choose the email account as the destination, for example Office 365 or Gmail.
Sign in to the target account.
Apply a date range if you only need recent mail.
Click Convert and the mail arrives in the new mailbox with its folder structure.
Demo Version vs Full Version
| Feature | Free demo | Full version |
|---|---|---|
| Add and preview PST files | Yes | Yes |
| Convert to all 20+ formats | 40 items per folder | Unlimited |
| Migrate to email accounts | 40 items per folder | Unlimited |
| Batch conversion | Yes | Yes |
| Filters and attachment options | Yes | Yes |
| File size limit | None | None |
| Technical support | Yes | Yes |
Start with the demo. Convert a few emails, open the result, and confirm the output is exactly what you expect. When you are happy, activate the full version and run the complete job.
Technical Specifications
| Platform | Windows 11, 10, 8.1, 8, 7 and Windows Server editions |
| Supported PST types | ANSI and Unicode PST from all Outlook versions |
| Outlook required | No |
| Output | 20+ file formats plus direct migration to email accounts |
| Processor | 1 GHz or higher |
| RAM | 2 GB or more recommended |
| Disk space | Enough free space for the converted output |
| Languages in data | Unicode support, so multilingual emails convert correctly |
Safe, Private and Straightforward
DT PST Converter runs on your own computer. Your PST files are read locally, and the converted output is written to the folder you choose. The original PST file is never changed, so you can run the conversion again with different settings at any time. When you migrate to an email account, you sign in with that account's own login, and the tool only sends the mail you selected.
Frequently Asked Questions
QHow do I convert a PST file to another format?
AInstall DT PST Converter, add your PST file, choose the output format such as PDF, MBOX, EML or MSG, set any filters, and click Convert. The converted files are saved in the folder you select, with the original folder structure preserved.
QDo I need Outlook installed to convert PST files?
ANo. DT PST Converter reads PST files directly, so it works on any Windows PC even if Outlook was never installed or has been removed.
QHow many formats can I convert a PST file into?
AMore than 20. These include PDF, MBOX, EML, EMLX, MSG, HTML, MHTML, TXT, RTF, DOC, DOCX, CSV, VCF, ICS and image formats, plus direct migration to email accounts like Office 365 and Gmail.
QCan I convert PST to PDF with attachments?
AYes. Choose PDF as the output and select how attachments should be handled. They can be saved alongside the PDF, or converted to PDF too, so the full email record stays together.
QCan I convert multiple PST files together?
AYes. Add as many PST files as you need or select a whole folder. All of them are converted in one run with the same settings, and there is no limit on the number of files.
QIs there a size limit for PST files?
ANo. Small archives and very large PST files both convert. Large files simply take longer, and DT PST Converter is built to keep that time short.
QDoes it support both ANSI and Unicode PST files?
AYes. ANSI PST files from older Outlook versions and Unicode PST files from Outlook 2003 and later are both supported.
QCan it open a password-protected PST file?
AYes. When a PST file asks for a password, the tool lets you proceed with conversion of its data.
QWill the folder structure stay the same?
AYes. Folders and subfolders are recreated in the output exactly as they appear in the PST file, and email details like date, sender, recipients and attachments stay with each message.
QCan I convert only some emails?
AYes. Use the date range filter or pick specific folders and items. You can also filter by sender, recipient and subject so only the emails you need are converted.
QCan I migrate PST to Office 365 or Gmail with this tool?
AYes. Choose the email account as the destination, sign in, and the selected folders are uploaded into that mailbox.
QCan I export Outlook contacts and calendars?
AYes. Contacts export to VCF or CSV, and calendar items export to ICS, with no Outlook needed.
QDoes the tool change or delete my original PST file?
ANo. The source PST stays untouched. The tool only reads from it.
QWhat can the free demo do?
AThe free demo lets you add PST files, preview everything and convert a limited number of items from each folder, so you can test the output quality before buying.
QIs it faster than other PST converters?
ADT PST Converter is built for speed, with a lightweight engine that reads and writes large PST files quickly and keeps the system responsive. The best test is your own file, so run the demo on a real PST and time it.
QWhat if my PST file is corrupted or damaged?
ADT PST Converter includes built-in recovery scanning that directly parses and extracts data from corrupted, damaged, or inaccessible PST and OST files. You do not need scanpst.exe or Outlook to recover your emails, attachments, and folder structure.
QCan I convert OST files as well?
AYes. In addition to PST files, DT PST Converter supports offline OST files from any Outlook or Exchange version. You can convert healthy or orphaned OST files directly to PDF, MBOX, EML, MSG, and 20+ other formats or migrate them to cloud accounts.
QWhich Windows versions are supported?
AWindows 11, 10, 8.1, 8 and 7, along with Windows Server editions.
Convert Your PST Files Today
Old PST files should not be locked away behind Outlook. Download the free demo of DT PST Converter, run it on a real file, and see how quickly your mail comes out in the format you need.