Effective Ways to Migrate KMail to Thunderbird Profiles Easily

Summary: This guide will tell you how to migrate KMail to Thunderbird client. There will be different sections like why users need to import, manual & professional methods to ensure complete data migration. KMail is among the reliable email clients that can be used for the Linux operating system. But, people tend to go for Thunderbird due to its cross-platform compatibility and other features.

Why Users Import KMail to Thunderbird?

These are some of the reasons to migrate KMail to Thunderbird.

• You can configure many email accounts
• Thunderbird comes with many add-ons and themes
• Good at spam protection and frequent updates
• It is free and open source software to work with large MBOX files
• Very easy to take backups and manage multiple profiles
• Handle imported data from various email clients
• It is compatible with all major OS versions

Read About: How to Migrate Postbox to Thunderbird?

Location where KMail Store Emails

Before proceeding with the migration process, it is necessary to know how KMail saves mailbox information.

In Latest KMail versions:

~/.local/share/local-mail/

Or:

~/.local/share/.local-mail.directory/

KMail data is stored in the Maildir format. Every email is stored in separate folders like:

• cur
• new
• tmp

However, Thunderbird can manage Maildir accounts very well. So, it becomes easy to convert proprietary mail formats.

Manual Method to Migrate KMail to Thunderbird Using Maildir Files

You can import your KMail mailbox manually, if the data already exists in Maildir format.

Step 1. Backup KMail Data

Copy your entire KMail mail folder to your preferred location

Step 2. Install Thunderbird in your PC

• Download and install the latest Thunderbird version
• Create a new profile, if it’s empty

Step 3. Check this Guide & Install ImportExportTools NG Add–on

This is an add-on for Thunderbird that makes it easy to import mailbox data into local folders.

Step 4. Create Local Folders

Within Thunderbird application:

• Right-click on Local Folders
• There, you need to create folders similar to KMail structure

Step 5. Import/Move Maildir Data

• Import your Maildir folders into Local Folders in Thunderbird
• After that, start your Thunderbird again

Step 6. Check All Emails

Verify all your data is present or not:

• Inbox
• Sent Messages
• Drafts
• Attachments
• Folders hierarchy

Limitations of Using Manual Steps

Even though the manual method is useful for small mailboxes, but it has several disadvantages too:

• Takes more time when you have large mailboxes
• You need to correct the folder structure again
• There is no automation steps
• Not easy for non-technical users
• Chances of missing important emails
• You may see duplicate contents
• Need to repeat the same steps for every mail

So, it is better to use our professional method which is explained in the below section.

Migrate KMail to Thunderbird Profile Data Using Automated Solution

If you want to transfer all your KMail files to Thunderbird, then it can be a hard task to complete. As, you have numerous folders, emails, and attachments stored inside. Ultimately, you will tend to lose your important emails with no folder structure. It is very problematic for business users and those who use KMail for their email archives. That is why, you should go with SysTools Thunderbird Import Wizard to directly import bulk Kmail data.

Key Features:

• Exporting multiple KMail mailbox data to Thunderbird
• It retains the same folder structure during the entire process
• Import data from Subject, From, To, Cc, Bcc, Date, & attachments
• Software handles large MBOX files easily
• Easy to use and does not require any technical knowledge
• Low risk of duplicate and missing emails
• Compatible with latest versions of Thunderbird

Tool Steps to Export Batch KMail Data without Losing Emails

Follow these simple steps to migrate KMail to Thunderbird in a professional manner.

1. First of all, you need to download & install the software.

2. Then, go to Add File(s)/Folder and select the MBOX file.

3. The next step is that our software shows all available profiles of your Thunderbird.

4. Select the profile from the list Identities to import the MBOX/MBX file.

Note: One point here is that you must have your Thunderbird configured with at least one email account or profile. Or else you will get a message about configuration.

5. For maintaining the folder structure of the imported file, check the “Maintain Folder Hierarchy” option.

6. Finally, press the “Import” button.

7. Now, imported files are displayed in the Thunderbird Profile.

Note: If you have an IMAP account, then it’s not possible to import the files. Hence, select either the POP or Local Folder.

Manual vs Professional Steps – Table Comparison

This is the section where you can compare both these features. It helps you to decide which method is good to migrate KMail to Thunderbird.

Points to Check:

• Do a full backup of all your KMail data
• Upgrade Thunderbird to the latest version
• Always check the disk space
• Ensure that KMail is closed before copying mailboxes
• First, try to import small files to test the import process
• Do not delete the original mailbox until the process is confirmed

Final Verdict

The decision to migrate KMail to Thunderbird is one step toward getting a cross-platform & flexible email client. However, the manual steps may prove effective when you have only a small Maildir-based mailbox. But difficult if you are faced with a large volume of data, complicated folders structure or several accounts. In that case, going with our professional approach would be a great choice.