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How to Migrate Postbox to eM Client Account? Update!

author
Written By
Nick Rogers
Published On
June 10th, 2025
Reading Time
6 Minutes Reading

Since Postbox has been discontinued, many users have started facing issues with their Postbox email account. As a result, many users are switching from Postbox to eM Client account. If you are one of them, you should continue reading this informative guide. In the following sections, we’re going to explain how to migrate Postbox to eM Client account. Here, we are going to give you the amazing methods and step-by-step procedure to accomplish this task effectively.

Common Reasons to Migrate Postbox Emails to eM Client

Migrating emails from Mailbox to eM Client is a strategic decision. Here are some common reasons why you should switch from Postbox email line to eM Client.

  • Discontinuity of Postbox: It has been officially suspended with no further updates and support. This is the main reason why users switch to eM Client because they find it the best option.
  • Integrated Features: Compared to the Postbox email client, eM Client offers a more extensive set of built-in tools such as:
  • Calendar, Tasks, Contacts, and Chat all in one app
  • Video calls (e.g. Zoom, Microsoft Teams integration)
  • Note-taking and email encryption support (PGP and S/MIME)
  • User Friendly Interface and Usability: The eM Client app has a modern, customizable, and easy-to-use interface that supports light/dark modes, themes, and layout flexibility. It offers better accessibility features and an easy experience for daily use.
  • Encryption and Privacy: The eM Client supports PGP and S/MIME encryption. In addition, it offers the most advanced privacy controls and email monitoring detection tools.

How to Migrate Postbox to eM Client?

For fast, quick, and reliable results, we recommend using the 4n6 Email Converter. This application has the ability to securely migrate complete data from your Mailbox account to eM Client. This app has a very simple user interface. You won’t face any kind of issues while exporting emails from Postbox to eM Client account.

Simple Steps to Export Data from Postbox Account to eM Client

To export data from Postbox to eM Client account, you need to follow the two-step process below.

Step 1: Export Postbox Data to eM Client Supported Format

  • Firstly, download 4n6 Postbox to eM Client Converter on your Windows computer.
    download
  • After downloading the program, install it, run it, and click the Open button.
  • From the given drop-down list, choose the Desktop Email Clients and choose Postbox.
  • The app provides you with two options to browse and load data from your Postbox account. If the mailbox is configured on your computer, choose the Open Configured Mailbox Accounts option. Otherwise, choose the choose folders option to manually browse Mailbox files.
  • This application will quickly load your Postbox account data on the left panel. Click on the loaded data and preview emails in different modes.
  • Now, click the Export button and from the given drop-down list, please choose EML file format.
  • Check all or required data loaded on the left panel and browse the location where you need to get the resultant files.
  • Enable the required filters and click the Save button to begin the migration from Postbox account to eM Client supported format.

The application starts exporting your data from Postbox to eM Client supported EML format. This process will take only some moments. Once you get the converted files, please follow the next step.

Step 2: Import Exported Postbox Files into eM Client

You can use two different methods to import the exported Postbox files into your eM Client account.

Method 1: Drag and Drop

  • Open your eM Client account and select the folder where you need to import your EML files like inbox, sent, etc.
  • Drag the exported EML file from your computer and drop them to that folder.

The emails will be imported and appears just like the regular messages.

Method 2: Use the Import Wizard

  • Go to the Menu, choose the File option, and select Import.
  • Choose the Email (.eml) and browse the folder containing .eml files.
  • Select the files or folders to import and click the Next button and follow the instructions to complete the process.

That’s it. This is how you can migrate data from Postbox to eM Client account.

Frequently Asked Questions

Question 1: Is it possible to directly import Postbox data to eM Client account?

Answer 1: No, there is no direct way available to migrate Mailbox to eM Client. You first manually export your data from Postbox into the eM Client supported file type and they import it into your eM Client account.

Question 2: What file format does Postbox account support for storing email messages?

Answer 2: The mailbox supports saving emails as MBOX file format.

Question 3: How can I import MBOX files into Em Client?

Answer 3: eM Client application doesn’t support to directly import MBOX file. You will need to:

  • Step 1: Import the MBOX files into Thunderbird account.
  • Step 2: Setup the same email account in your Thunderbird and let it sync (for IMAP).
  • Step 3: Setup the same account in your eM Client account.
  • Step 4: Drag the emails from your Thunderbird to your account folders to sync them with the server and access them in your eM Client account.

Question 4: How do I migrate Postbox contacts and calendars to em client account directly?

Answer 4: If you want to import contacts and calendars directly from Postbox, then you will need to download and use the 4n6 software. With the help of this app, it is possible to migrate emails, contacts, calendars, and other data from the Mailbox at once without facing any kind of issues.

Question 5: Will I lose my data when I migrate Mailbox to Client em?

Answer 5: No, if you are using a reliable and trustworthy app like 4n6 software, you will not lose a bit of information. It will securely migrate all your data from Postbox to eM Client account in a few easy steps.

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Final Words

As Postbox is discontinued, many users are transferring their data from Postbox to another account like eM Client. In today’s content, we have covered this query. Here, we have explained the complete process to migrate Postbox to eM Client. Using the recommended software, you can easily accomplish this task without facing any kind of issues.