Export Data

How to Export Exchange Mailbox to EML? Complete Guide

Fact-checked and reviewed in accordance with our Editorial Policy

You can export Exchange mailbox to EML format using four methods according to your requirement:

1. Manual Export (Single Items): Log on to OWA/New Outlook, select an email, open the three dot (…) menu, then click Download or Download as EML.
2. IMAP Client Workaround (Configuration): Turn on IMAP for your Exchange account, and sync the entire account in Mozilla Thunderbird. You can then drag-and-drop folders to the desktop as EML files.
3. Programmatic Export (Technical): Use EWS via C# or PowerShell to export items to MIME streams (.eml).
4. Automated Export (Easy and Bulk Export): Use a dedicated tool such as the BitRecover Exchange to EML Export Tool that directly connects with the Exchange Server and export complete mailboxes into EML format without manual efforts.

How to Export Exchange Mailbox to EML? Step-By-Step

Below we have shared a step-by-step guide to export Exchange mailbox to EML using 4 different ways.

Method 1: Manual / Single-Item Export (Outlook on the Web)

To export only a few important emails and not your full Exchange mailbox to EML, then use the in-built procedures.

Via Outlook Web Access (OWA) / New Outlook

Modern webmail enables users to easily export Exchange mailboxes to EML:

1. Log in to your Microsoft 365/Exchange account.
2. Choose the email that you want to save and look it up.
3. Click the More Actions button (three dots in the upper right corner of your email).
4. Choose Download or Download as EML.

Method 2: The IMAP Workaround (via Thunderbird)

The only solution to export multiple Exchange emails to EML for free without using PowerShell is to implement an email client such as Mozilla Thunderbird.

1.  Make sure that IMAP is turned on for your mailbox in the Exchange Admin Center.
2. Add your Exchange account to Thunderbird using your IMAP credentials. Your entire inbox should be synced and loaded into Thunderbird.
3. You can then create a folder on the Windows Desktop, after a sync has taken place. Highlight the emails (or entire folders) in Thunderbird, then drag and drop them into the folder on the Windows Desktop. They will be saved as separate .eml files.

Note: Syncing a large Exchange account through IMAP is prone to server timeouts; it is recommended to use a fast and reliable internet connection. Moreover, the process requires manual configurations and can also fail to export Exchange mailbox to EML.

Method 3: Programmatic Method (PowerShell & Exchange Web Services)

For IT administrators managing server automation, you can script the extraction using Exchange Web Services (EWS) to handle the underlying MIME streams.

• GetItem / Item.Bind: By using the GetItem operation and setting the IncludeMimeContent property to true, the Exchange server returns the full MIME representation of the message (the raw EML data), which can be written directly to a local file stream.

Note: This method is very technical and time-consuming; if you want to export Exchange Mailbox to EML then you should consider using a specialized tool.

Method 4: Automated Exchange to EML Export Tool

Although the above methods work, they require manual configurations and technical steps and are prone to human errors. If you are in search of the most reliable approach and want to export Exchange to EML without email clients and PowerShell commands, then you require a dedicated tool that is specifically built for this purpose.

Discover how to export Exchange mailbox to EML with all emails, contacts, attachments, calendars, tasks, and notes without losing the original format, metadata & folder hierarchy by using the automatic Email Backup Software by BitRecover. This specialized tool bypasses complex PowerShell scripts and slow IMAP syncing by connecting directly to your Exchange account.

How to Export Exchange Mailbox to EML with Tool?

1. Open the BitRecover Exchange to EML export tool. Choose Exchange Server from the list of email sources, enter your email address, and press login to verify your account.
   
2. Software will show the full mailbox hierarchy. Select the folders (Inbox, Sent Items, and Custom Folders) from which you want to export data by ticking those folders.
   
3. Choose EML as the output format from the Saving options drop-down menu.
   
4. Use the advanced settings to select a date-range filter in order to export Exchange mailbox to EML based on different criteria.
   
5. Provide a destination path on your local system and hit on Backup. The tool will preserve the complete folder structure of the source email account, as well as export all emails to separate EML files.
   

Summary: Which Method Should You Choose?

Export Method	Speed & Reliability	Complexity & Risk	Overall Verdict
Manual (OWA / Outlook)	Extremely Slow (1 by 1)	Low risk, but highly tedious	Only viable if you need fewer than 10 emails.
IMAP Sync (Thunderbird)	Slow (Prone to server timeouts)	High risk of data loss if sync drops	Okay for free bulk export of Exchange to EML, but highly unreliable for large data.
PowerShell / EWS	Too Technical	High barrier to entry	Only suitable for IT experts with C# or PowerShell coding skills.
BitRecover Exchange to EML Export Tool	Fastest & 100% Reliable	Zero technical skills required; Zero data risk	Highly Recommended to fast, safe, and automated bulk export Exchange mailbox to EML.

Manually trying to export Exchange mailbox to EML is too complex, and IMAP delivers sync errors. When exporting bulk Exchange mailboxes to PST, the most reliable way is to use a specialized automated Exchange to EML export tool. The software eliminates all challenges and easily exports all Exchange data to EML.