Excellent 5 stars TrustRating 4.8 (1,221 reviews)

EMDF File Converter

Convert eM Client EMDF files to 15+ formats without eM Client installed. Free, secure and preserves all your data.

  • Export to 15+ formats including PST, PDF, EML, MBOX, MSG, HTML
  • No eM Client required, works as standalone converter
  • Batch conversion of multiple EMDF files simultaneously
  • Complete preservation of attachments, folders and metadata
  • 100% offline processing, your data never leaves your computer

Version 6.0 | 15 MB | Windows 7/8/10/11 | Free version converts limited items

Output Formats

Convert EMDF to 15+ Popular Formats

Export eM Client emails to any format you need

PST
Outlook PST

Import to Microsoft Outlook

PDF
PDF

Print-ready documents

EML
EML

Standard email format

MBOX
MBOX

Thunderbird, Apple Mail

MSG
MSG

Outlook message files

HTML
HTML

Web viewable format

Also supports: TXT, DOC, DOCX, RTF, CSV, XPS, MHT and more output formats for emails, contacts and calendars.

Quick Summary, What is EMDF File Converter?

4n6 EMDF File Converter is a powerful Windows application that converts eM Client's proprietary EMDF database files into standard email formats like PST, PDF, EML, MBOX, MSG and HTML. It works without requiring eM Client email application to be installed.

What is an EMDF file? EMDF is the proprietary database format used by eM Client application to store emails, contacts, calendars, tasks and notes. These files are located in the eM Client data folder (typically C:\Users\[Username]\AppData\Roaming\eM Client\) and cannot be opened by other email clients.

Why convert EMDF files? Users need to convert EMDF files when migrating to another email client (like Outlook or Thunderbird), when eM Client is no longer accessible, for email archiving and backup, for legal/compliance requirements or for forensic email analysis.

Key capabilities: Export to 15+ formats including PST (Outlook), MBOX (Thunderbird), EML (universal), PDF (printable), MSG (Outlook messages). Batch convert multiple EMDF files. Preserve folder structure, attachments, email headers and metadata. Works completely offline for data privacy.

EMDF components supported: Emails with all properties (To, From, CC, BCC, Subject, Date, Body), attachments (documents, images, any file type), folder hierarchy, contacts, calendars, tasks and notes stored in eM Client.

Quick Facts
  • Free Version Available
  • 15+ Export Formats
  • No eM Client Required
  • Batch Processing
  • Preserves Attachments
  • Folder Structure Intact
  • 100% Offline
  • Windows 7-11

Common Challenges

Why You Need to Convert EMDF Files

EMDF is a proprietary format that only eM Client can read. Here's why conversion matters.

🔄
Migrating Email Clients

Switching from eM Client to Outlook, Thunderbird or another email application? EMDF files can't be directly imported.

Convert to PST for Outlook or MBOX for Thunderbird

⚠️
eM Client No Longer Accessible

License expired, software corrupted or moving to a computer without eM Client? You still need access to your emails.

Convert without eM Client installation

💾
Backup & Archiving

Creating long-term email archives? EMDF format may become inaccessible if eM Client discontinues support.

Export to universal formats like PDF or EML

⚖️
Legal & Compliance

Need to produce email records for legal proceedings, audits or regulatory compliance? Standard formats are required.

Convert to PDF with full metadata preservation

🔍
Forensic Analysis

Investigating email communications for security incidents, HR matters or legal discovery requires format conversion.

Preserve all headers and metadata for analysis

📱
Cross-Platform Access

Need to access eM Client emails on Mac, Linux, mobile devices or web-based email clients?

Convert to EML or HTML for universal access

Understanding EMDF

What is an EMDF File?

Understanding eM Client's proprietary database format

EMDF = eM Client Database Format

EMDF is the proprietary database format used exclusively by eM Client to store all mailbox data. Unlike standard email formats (EML, MBOX, PST), EMDF files can only be read by eM Client application or specialized tools like this converter.

EMDF uses a SQLite-based database structure that stores emails, contacts, calendars, tasks and notes in separate data files within the eM Client application folder.

EMDF Database Files
  • 📧 mail_data.dat, Email messages, folders, headers, body content
  • 📎 attachments, Documents, images, embedded files
  • 👤 contacts.dat, Address book entries
  • 📅 calendar.dat, Events and appointments
  • tasks.dat / notes.dat, To-do items and memos
📧
Emails

Messages, threads, headers, body content

📎
Attachments

Documents, images, any file type

📁
Folders

Inbox, Sent, Drafts, custom folders

👤
Contacts

Names, emails, phones, addresses

📅
Calendars

Events, appointments, reminders

Tasks & Notes

To-do items, memos, notes

📁

Where are My EMDF files?

Follow these steps to locate your eM Client database

🖥️ Method 1: Quick Access (Recommended)
  1. Press Windows + R to open Run dialog
  2. Type: %appdata%\eM Client
  3. Press Enter
  4. Your EMDF database files are in this folder

💡 Tip: Copy the entire eM Client folder to a safe location before conversion as a backup.

📂 Method 2: Manual Navigation

Navigate to this path in File Explorer:

C:\Users\[YourUsername]\AppData\Roaming\eM Client\

Note: The AppData folder is hidden by default. To show it:

  • Open File Explorer
  • Click "View" tab → Check "Hidden items"
  • Navigate to the path above

📋 Files You'll Find
📧
mail_data.dat

Main email database

👤
contacts.dat

Contact information

📅
calendar.dat

Calendar events

Complete Data Support

Convert All eM Client Data

Every component stored in EMDF files is fully supported

The EMDF File Converter handles every type of data stored inside eM Client's database files. Beyond just emails, it processes folders, attachments, contacts, calendars, notes, tasks and all mailbox elements.

During conversion, the tool preserves:

  • Email properties: To, From, CC, BCC, Subject, Date, Body (HTML/Plain text)
  • Attachments: All file types with original names and content
  • Folder structure: Complete hierarchy including custom folders
  • Metadata: Headers, timestamps, read/unread status, flags
  • Contacts: Names, emails, phones, addresses, photos
  • Calendars: Events, recurring appointments, reminders

Whether migrating to another email client, creating backups or extracting data for analysis, nothing is lost during conversion.

EMDF File Converter showing folder structure and email preview

Main Features

Complete EMDF Conversion Capabilities

Everything you need for accurate and secure EMDF file conversion

Bulk Convert Multiple EMDF Files

Batch Convert Multiple Files

Convert hundreds of EMDF files simultaneously. Load multiple files or entire folders and process them all in a single operation, saving hours of manual work.

No eM Client Required

No eM Client Required

Works as a completely standalone application. Convert EMDF files even on computers where eM Client was never installed, perfect for data recovery and migration scenarios.

Preserve All Attachments

Complete Attachment Support

All attachments, documents, images, PDFs, spreadsheets, any file type, are preserved during conversion. Attachments remain accessible in the output format.

Preserve Folder Hierarchy

Folder Structure Preservation

Maintain your entire folder organization, Inbox, Sent, custom folders and subfolders. The converted output mirrors your original eM Client mailbox structure.

No File Size Limits

Handle Large EMDF Files

No size restrictions. Convert small personal mailboxes or large enterprise databases with equal reliability. Optimized for performance with files of any size.

Easy to Use Interface

Simple 4-Step Process

Clean, intuitive interface requires no technical expertise. Load files, preview content, choose output format, click convert, that's it. Works for everyone.

100% Offline Processing

100% Offline Processing

All conversion happens locally on your computer. No internet connection required, no data uploaded anywhere. Your emails remain completely private.

Preview Before Converting

Preview Before Converting

View email content, attachments and folder structure before conversion. Verify you have the right files and see exactly what will be exported.

Selective Conversion

Selective Conversion

Choose specific folders or emails to convert instead of the entire mailbox. Perfect when you only need certain messages or want to exclude irrelevant data.

Migration Made Easy

Where Can Your EMDF Data Go?

Convert eM Client emails to any platform or archive format

📧
eM Client
EMDF Database
⚙️
EMDF Converter
Transform
📨
Any Platform
PST, MBOX, EML...
PST
Microsoft Outlook

Import PST directly

MBOX
Thunderbird

Import MBOX file

EML
Gmail

Upload EML files

PDF
Archive

Permanent records

HTML
Web View

Browser readable

MSG
Outlook Msg

Individual emails

Plus: DOC, DOCX, RTF, TXT, CSV, XPS, MHT formats for specialized needs

Step-By-Step Process

How to Convert EMDF Files

Follow these simple steps to convert your eM Client EMDF files

Launch EMDF File Converter
Select EMDF files to convert
Preview EMDF file contents
Export EMDF to PST, PDF, EML

FAQs

Frequently Asked Questions

Get answers about EMDF file conversion

The 4n6 EMDF File Converter works as a standalone application, no eM Client installation is required. Simply:

  1. Download and install the free EMDF Converter
  2. Click "Choose File" to load your EMDF files
  3. Preview the content to verify
  4. Select your output format (PST, PDF, EML, etc.)
  5. Click "Save" to complete the conversion

The converter reads EMDF files directly without depending on eM Client software.

EMDF is eM Client's proprietary database format that stores all your email data including messages, contacts, calendars, tasks and notes.

Default location on Windows:

C:\Users\[YourUsername]\AppData\Roaming\eM Client\

The AppData folder is hidden by default. To access it:

  • Press Windows + R, type %appdata%, press Enter
  • Navigate to the "eM Client" folder

Yes! PST export is one of the most popular features. The EMDF Converter exports eM Client emails to Outlook PST format with full preservation of:

  • Email content (HTML and plain text)
  • Folder structure (Inbox, Sent, custom folders)
  • Attachments (all file types)
  • Email headers and metadata
  • Date/time stamps

The resulting PST file can be imported directly into Microsoft Outlook.

Yes, all attachments are fully preserved during conversion, including:

  • Documents (PDF, Word, Excel, etc.)
  • Images (JPG, PNG, GIF, etc.)
  • Archives (ZIP, RAR)
  • Any other file type attached to emails

Attachments retain their original filenames, content and can be accessed in the converted output.

Yes! The EMDF Converter supports batch processing:

  • Add multiple EMDF files using "Choose Files"
  • Add entire folders containing EMDF files
  • Convert all loaded files in a single operation

This is ideal for migrating multiple user accounts or processing large email archives.

The converter supports 15+ output formats:

  • Email formats: PST, EML, MSG, MBOX
  • Document formats: PDF, HTML, MHT, DOC, DOCX, RTF
  • Other formats: TXT, CSV, XPS

Choose the format that best suits your needs, PST for Outlook, MBOX for Thunderbird, PDF for archiving, etc.

Yes! The complete folder hierarchy is preserved during conversion:

  • Standard folders (Inbox, Sent, Drafts, Trash)
  • Custom folders and subfolders
  • Folder nesting at any depth

Your converted output will mirror the exact organization of your eM Client mailbox.

Yes! The EMDF Converter handles files of any size:

  • No file size limits
  • Optimized memory management for large files
  • Progress indicator for long conversions

For very large files, ensure you have sufficient disk space for the output and allow adequate processing time.

Absolutely. The EMDF Converter ensures complete privacy:

  • 100% offline processing, no internet required
  • No data uploaded to any server
  • Original EMDF files are never modified
  • Works entirely on your local computer

Your emails, attachments and personal data never leave your machine.

Yes! The converter handles all eM Client data types:

  • Contacts: Export to VCF, CSV for import elsewhere
  • Calendars: Export to ICS for calendar apps
  • Tasks: Export task items
  • Notes: Export notes and memos

The free version includes all features with a limitation on the number of items exported:

  • Full preview of all EMDF content
  • All output formats available
  • Export limited number of emails

Upgrade to the Pro version for unlimited exports.

The EMDF Converter supports:

  • Windows 11 (32-bit and 64-bit)
  • Windows 10 (32-bit and 64-bit)
  • Windows 8.1 / 8 (32-bit and 64-bit)
  • Windows 7 (32-bit and 64-bit)

Requires .NET Framework 4.5 or higher (included in Windows 8+).

To import eM Client emails into Microsoft Outlook:

  1. Use 4n6 EMDF Converter to export your EMDF files to PST format
  2. Open Microsoft Outlook
  3. Go to File → Open & Export → Import/Export
  4. Select "Import from another program or file"
  5. Choose "Outlook Data File (.pst)"
  6. Browse to the converted PST file and import

All emails, folders and attachments will be imported into Outlook with the original structure preserved.

Yes! Convert EMDF to EML format for Gmail compatibility:

  • Export EMDF files to EML using the converter
  • Use Gmail's import feature or a third-party tool to upload EML files
  • Alternatively, import the EML files into Thunderbird, then sync with Gmail via IMAP

EML is a universal email format that most email services can process.

EMDF Viewer:

  • Opens and displays EMDF file contents
  • Read-only access, doesn't modify or export data
  • Use for previewing, searching and verifying emails
  • Ideal for audits and investigations

EMDF Converter:

  • Exports EMDF data to other formats (PST, PDF, EML, etc.)
  • Transforms data for use in other applications
  • Use for migration, backup and data extraction
  • Creates new output files from EMDF source

Choose Viewer to inspect data, Converter to export it.

If eM Client is corrupted but the EMDF files are intact:

  1. Locate the EMDF database folder (%appdata%\eM Client)
  2. Copy the entire folder to a backup location
  3. Use 4n6 EMDF Converter to open the database files
  4. Preview content to verify data is accessible
  5. Export to your desired format (PST, EML, MBOX)

The converter works independently of eM Client, so it can access EMDF data even when the email client is damaged or uninstalled.

Absolutely yes! This is one of the key benefits of the 4n6 EMDF Converter:

  • Works as a completely standalone application
  • Does not require eM Client to be installed (past or present)
  • Simply copy the EMDF files to any Windows PC
  • Install the converter and open the EMDF files directly

This is especially useful for forensic investigators, IT administrators and users who need to access EMDF data from another user's backup.

Exclusive Feature

Conversion Integrity Report

Know exactly what was converted, complete transparency after every conversion

📊 Conversion Summary Report
Emails Processed 12,847 ✓
Attachments Extracted 3,421 ✓
Folders Preserved 47 ✓
Contacts Exported 892 ✓

Conversion Status 100% Complete ✓

Why This Matters

Verify Complete Migration

Confirm every email, attachment and folder was successfully converted before deleting source files.

📋
Audit Trail Documentation

Generate reports for compliance, legal discovery or internal audits proving data integrity.

⚠️
Identify Any Issues

Instantly spot if any items failed to convert so you can take corrective action.

📁
Export Report as Log

Save the conversion report as a text file for your records or to share with stakeholders.

Why Use EMDF Converter?

EMDF Converter vs eM Client Native Export

See why professionals choose 4n6 EMDF Converter over eM Client's built-in export

Feature eM Client Export 4n6 EMDF Converter
Requires eM Client Installation ✗ Yes, Required ✓ Not Required
Export to Outlook PST ✗ Not Available ✓ Full Support
Export to PDF Documents ✗ Not Available ✓ Full Support
Batch Export Multiple Files ⚠ Limited ✓ Unlimited
Export from Orphaned EMDF ✗ Cannot Access ✓ Full Access
Selective Folder/Email Export ⚠ Basic Only ✓ Full Control
Works on Any Windows PC ✗ Only Where Installed ✓ Any PC
Forensic Metadata Preservation ⚠ Partial ✓ Complete
Export Contacts to CSV ✓ Available ✓ Available
15+ Output Formats ✗ Limited Formats ✓ 15+ Formats

Bottom line: Use eM Client export if you have eM Client installed and need basic EML export. Use 4n6 EMDF Converter for PST/PDF export, batch processing, forensic work or when eM Client isn't available.

Compare Versions

Free vs Pro Version

Choose right version for your needs

  • Feature
  • Preview All EMDF Content
  • Automatic EMDF File Detection
  • Convert with Attachments
  • Preserve Folder Structure
  • Advanced Search & Filter
  • Export to All 15+ Formats
  • Batch Conversion
  • Number of Items to Export
  • Recommended
    Pro
  • Unlimited
  •  Upgrade

Trustworthy

Why Choose 4n6 EMDF File Converter?

Discover why professionals trust this tool for safe, fast and accurate email conversion

Consistent and Accurate Results

Proven Accuracy

Built on years of email forensics expertise. Every conversion maintains complete data integrity, emails, attachments, headers and metadata are preserved with 100% accuracy.

Complete Data Privacy

Complete Privacy

100% offline processing ensures your sensitive email data never leaves your computer. No cloud uploads, no server connections, no privacy concerns. Your emails stay yours.

Expert Support

Expert Support

Technical support from email forensics experts. Regular updates ensure compatibility with the latest eM Client versions and Windows releases. Help when you need it.

Expert Support

Need Help Converting EMDF files?

Our email forensics experts are ready to assist with any conversion questions, technical issues or custom requirements.

Customer Reviews

What Users Say About EMDF Converter

Real feedback from professionals who use the tool daily

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