Backup IMAP to EML – Export Emails with Attachments & Metadata

IMAP emails are stored on a mail server, which means any deletion, IMAP sync issues, or account problems can lead to permanent data loss. That’s why creating a local backup is essential. One reliable way to do this is to backup IMAP to EML, a format that saves each email as an individual file with its:

• Content
• Attachments
• Metadata intact (sender, receiver, date, subject, and headers)

This approach ensures easy access and compatibility across multiple email clients, such as Microsoft Outlook, Mozilla Thunderbird, Apple Mail, and Windows Mail, without dependency on the original IMAP account.

To understand why this format is widely preferred, it’s important to first look at what it actually means.

What Does Backup IMAP to EML Mean?

It refers to the process of exporting emails from an IMAP-based account and saving them as individual .eml files on a local system. Instead of relying on server synchronisation, each email is stored as a separate file that includes its complete content, attachments, and header information. 

This makes it easier to access and manage emails independently of the original account. In simple terms, it converts server-dependent mailbox data into standalone files that can be opened across different email platforms whenever needed.

All over the world, EML format is the most preferred file format because it’s:

• Widely supported (Outlook, Thunderbird, Apple Mail)
• Easy to open and share
• Ideal for long-term storage
• Bypass this type of situation, i.e. “I Accidentally Deleted My Mail App“
• Preserves complete email structure (content, attachments, headers)
• Can be accessed without an active internet connection
• Compatible with multiple platforms, including Windows, macOS, etc.
• Allows easy migration between different email clients
• Reduces dependency on a single email service provider

By converting IMAP emails into EML files, email data becomes more secure and easier to manage outside the mail server, without depending on the internet. As a result, there are several practical reasons why this method is widely recommended, which I’ll share next.

Why Export IMAP to EML?

Backing up IMAP to EML is essential for anyone who wants to add an extra layer of security to their critical data. This approach ensures that emails remain secure and accessible, even if the original account becomes unavailable or deleted. Moreover, here are the most common reasons users look for this:

• Protect emails from accidental deletion or server-side issues
• Easily transfer emails between different email platforms
• Open and read emails without an internet connection
• Avoid relying entirely on IMAP servers
• Restore emails in case of data loss or cyber incidents
• Store emails securely for future reference
• Share individual emails without exporting entire mailboxes
• Access emails on different devices and operating systems
• Prevent data loss caused by synchronisation failures

Understanding these benefits makes one thing clear: having a backup is important, but choosing the right method to perform it is equally crucial. The next step is to explore how this backup can actually be performed.

Manual Method to Backup IMAP to EML

A manual approach can be used to back up IMAP emails to EML using an email client, and one commonly used free option is Mozilla Thunderbird. This method involves:

• Configuring the IMAP account
• Syncing mailbox data
• Exporting emails with the help of an add-on

Here’s the complete set of instructions for the same:

#Step 1. Configure IMAP Account

1. Install Mozilla Thunderbird
2. Open it and click Email Setup
3. Enter your IMAP credentials
4. Let Thunderbird sync all emails

#Step 2. Install ImportExportTools NG Add-on

1. Go to Add-ons and Themes
2. Search for ImportExportTools NG
3. Install and restart Thunderbird

#Step 3. Export IMAP to EML

1. Right-click on the folder (Inbox, Sent, etc.)
2. Select:
   ImportExportTools NG > Export all messages in the folder > EML format
3. Choose destination folder

Open exported EML files using any email client, review them, and everything is perfect. Check attachments and formatting also.

Export IMAP to EMLX Files with Apple Mail

Follow the steps to backup IMAP to EML file format using the Apple Mail platform.

1. Configure the IMAP account in Apple Mail on your Mac OS.
2. Select all the IMAP emails.
3. Drag and drop them into a new folder on your desktop.

The files will be saved in the EMLX format

The process can only occur when an email client is present. Moreover, configuring the account and waiting for thousands of emails to sync is really tedious. But, if you can endure it, the entire process becomes free of cost.

Limitations Users Faced with the Manual Method

While the manual approach works, there are still some common issues faced by the users, including me:

• No bulk automation for multiple accounts
• Time-consuming for large mailboxes
• Risk of incomplete export
• Folder hierarchy isn’t maintained
• Requires technical setup

That’s why I personally recommend a more reliable solution to export IMAP to EML, especially when dealing with critical or large-scale data.

Cutting-edge Solution to Backup IMAP to EML

If you’re handling large mailboxes or multiple accounts, relying on a professional solution ensures accuracy and complete data integrity. One such reliable solution is the SysTools IMAP Downloader, which can export IMAP emails into multiple formats, including EML.

This tool simplifies the entire backup process while eliminating the common limitations of manual methods, such as:

• Data loss
• Incomplete exports
• Time consumption

Why Choose SysTools Email Backup Software?

• Offers direct export without needing any email clients like Thunderbird
• Reduces the risk of data corruption or missing emails
• Saves time with an automated and smooth backup process
• Suitable for both individual users and enterprise environments
• Archive IMAP Email
• Easily export thousands of emails simultaneously
• Keeps the original mailbox structure intact
• Works with any IMAP-supported clients, i.e. Gmail, Yahoo, Outlook, and more

Not only this, but there are several features offered by this solution. So, don’t waste time on manual efforts, just download this software for free now, and follow the steps to backup IMAP to EML:

• #Step 1. Download and launch the software

• #Step 2. Select EML as the export format. Apply advanced filters (date range, delta backup, etc) if required.

• #Step 3. Select your IMAP Server, such as Gmail, Apple Mail, Outlook, or even any custom domain. 

• #Step 4. Set the destination path by hitting the “Backup Folder Path.”

• #Step 5. Click on Start Backup to backup IMAP to EML.

Best Practices to Follow for Backup

However, we have the best solution to export IMAP to EML. Still, there are some points to keep in mind to avoid issues:

• Take regular backups
• Keep multiple copies, i.e. local + external drive
• Verify exported EML files
• Avoid interrupting the backup process
• Use a professional tool to reduce unnecessary data
• Store backups in organised folders

Author’s Verdict

In this blog, we have discussed two practical solutions to backup IMAP to EML format. Simply follow the steps, and you will surely get instant and satisfactory results. For more details about this software and its working, contact our support team any time 24*7.

People Also Ask

• Is EML better than PST for backup?

I prefer EML for compatibility, but PST is better for Outlook-specific use. To be specific, you can use EML files in multiple email clients, such as Microsoft Outlook, Mozilla Thunderbird, Windows Mail, and Apple Mail. On the other hand, PST is supported only by Microsoft Outlook. So, if you want to migrate your data from one email client to another, then EML is the best choice.

• Can I open EML files without email clients?

Yes, you can open them using browsers and text editors, though email clients work best. 

• Does this email client backup include attachments?

Yes, if done correctly, with both manual and professional methods.

• How often should I backup IMAP to EML?

At least once a month, or more frequently for business users. You can use SysTools backup solutions for taking regular backups if your data is too crucial for you, and you can’t afford accidental deletion or data breach.