How to Transfer eM Client Mailbox to Another Computer?

Published On

December 5th, 2025

Reading Time

6 Minutes Reading

Transferring eM Client mailbox to another computer is a common need especially when upgrading your PC, switching to new computer or laptop, or securing your data for email migration. As an IT professional with years of experience performing enterprise-level email migrations, I created this blog to ensure you can transfer eM Client mailbox safely and quickly.

This blog follows verified procedures, real troubleshooting experiences, and best practices which help you avoid all the common mistakes users make while migrating eM Client mailboxes.

Why You Need to Transfer eM Client Mailbox to Another Computer?

Users generally need this transfer when:

Moving to a new system
Reinstalling Windows
Setting up eM Client application on multiple computers
Creating a backup for personal or professional reasons

These reasons are based on real-world cases where I have handled for individuals and corporate teams.

Requirements Before You Start

Please ensure the following:

Same eM Client Version Installation

Using the same eM Client version prevents database conflicts.
This step comes from practical troubleshooting experience where mismatched versions of eM Client caused restore failure.

External Storage of Cloud Drive

Use USB drive, SSD, or cloud storage to move your data.

Stable Internet Connection

It required if you use the IMAP accounts.

Full Access to File System

Required for the manual migration.

Method 1: Transfer Using eM Client Backup

This is the most reliable and easiest way to transfer eM Client mailbox to another computer.

This process follows the official eM Client guidelines.

Step 1: Create a Backup

Open eM Client application
Go to Menu and choose Backup

Wait until the backup completes

Backup Location: C:\Users\<username>\AppData\Roaming\eM Client\Backup

It ensures all components such as emails, signatures, contacts, and more are preserves exactly as they were.

Step 2: Move the Backup File

Copy the backup file to your USB drive or cloud storage.

Step 3: Restore the Backup File

Install eM Client application, go to menu, and choose restore.
Choose your backup file and wait for the process to finish.

The above step-by-step process has been consistently successful in my professional experience even for large eM Client mailbox migrations.

Method 2: Manually Transfer Database Folder (For Advanced Users)

This method provides complete control but must be done very carefully.

Only advanced users should attempt this to migrate eM Client mailboxes data, as improper handling can corrupt eM Client database. A common issue I have seen when a user skips proper shutdown steps.

Step 1: Locate Data Folder

Navigate to the following location: C:\Users\<username>\AppData\Roaming\eM Client

Step 2: Copy the Entire Folder

Copy the complete full eM Client folder to your external drive.

Step 3: Paste It On New Computer

Choose eM Client, replace the eM Client folder in new computer
Reopen the eM Client application

This method duplicates the entire environment including local folders that IMAP does not sync. It ensures the complete mailbox restoration.

Method 3: Export/Import eM Client Emails Manually (For Selective Transfer)

Use this method if you only want to transfer selective emails or folders.

This method is preferred in corporate situation where selective transfer is required.

Export Process

Go to Menu, File, and choose Export.

Import Process

Go to Menu, File, and select Import.

Professional Alternative: 4n6 Software Recommended for All Users

While manual steps work, many users especially those with the large mailboxes or corrupted databases, prefer smart, reliable, and automated software for error-free migration.

A reliable tool our team developed is 4n6 eM Client Converter, which easily transfer the entire eM Client mailboxes data to another computer with 100% accuracy.

Why 4n6 Software is Required?

It automatically detects the eM Client database.
You can transfer emails, contacts, calendars, and other information easily.
Maintains the exact folder structure while transferring eM Client mailboxes to another computer.
Provides advanced filtering for the selective transfer.
Works without eM Client installation on any version of Windows Operating System.
It successfully supports multiple output formats like PST, MBOX, EML, and more.
It comes with the simple user interface to help non-technical users to easily transfer the eM Client mailbox to another computer.
Supports to transfer attachments and headers information with 100% accuracy.
No file size limitations to transfer eM Client mailbox to another computer.

When to Prefer Professional Tool?

Use the software when:

Your eM Client is not opening
You cannot restore the backup
Want to migrate to another platform like Gmail, Office 365..
You want a professional, controlled migration without manual steps.

Many organizations choose this amazing software for its reliability, accuracy, and capability to transfer large mailboxes without losing anything.

Some Common Mistakes Users Should Avoid

These warnings come from years of troubleshooting real migration failures.

Do not restore backup in a different version of eM Client application.
Closing eM Client application while backup and restore.
Copying only .eml files without databases.
Do not format to migrate local folders.
Deleting old data before checking the successful migration.

Which Method is Best to Transfer eM Client Mailboxes to Another Computer?

Choosing the right method to transfer mailbox from eM Client to another computer depends on your requirements and technical comfort.

Backup and Restore is the easiest and reliable way for complete migration, while manual data copy is suitable for advanced users who need more control. If you want to transfer only specific emails, the Export/Import is good but limited. For the simple, reliable, and professional experience, whether complete or selective transfer, use the recommended 4n6 software.

All the methods suggested have been tried and tested in real migration scenarios.

Similarly Read

Common FAQs

Does eM Client automatically sync on a new device?

Only IMAP accounts sync automatically.

Is it possible to use same license on new computer?

Yes, eM Client supports reactivation.

Will local folders transfer automatically?

No, you must transfer local folders manually or with the help of professional software.

Final Conclusion

Transferring eM Client mailbox to another computer is easy when you have the right solution and steps.

In this guide, we have provided best ways to transfer eM Client mailboxes data. All the recommended solutions are good and tested. For the complete, safe, easy, and accurate migration, it is recommended to use the professional software.