Freeware

Top 7 free EML viewers

You don't have to purchase expensive software to view mail files. Moreover, some super-handy tools are absolutely free! Such EML viewers will not only open messages but also let you manage them in a variety of ways. Paying to view EML files is unnecessary, and our reviews will help you select the ideal program for your needs. Discover seven tools designed specially for mail viewing. All of them work on Windows. You can open your files directly via the interface, browse attachments, generate reports, and more. Deciding which of these programs is the best free EML viewer is up to you. Do not assume that all free products are flawed by definition. These tools each have strengths and weaknesses, but all of them will open EML files (we have checked!).

Quick answer: The most practical free EML viewer for Windows is CoolUtils Mail Viewer: install it, browse the folder tree to your .eml files, and click any message to read its body, formatting, and attachments instantly. It is free for home use and also exports messages to PDF, HTML, TXT, XLS, or CSV reports without Outlook.

Best Free EML Viewers at a Glance

If you just need to open and read EML files on Windows without Outlook, CoolUtils Mail Viewer is the most practical pick — free for home use, with folder-tree navigation, attachment preview, and report export. The table below compares all seven free EML viewers in this guide.

EML viewer	Price	Opens	Attachments	Export / reports	Best for
CoolUtils Mail Viewer	Free (home)	EML, MSG, EMLX, P7M, ICS, VCF	Yes	PDF, HTML, TXT, XLS, CSV	Everyday viewing + reports
Free EML Reader	Free	EML, Thunderbird/Outlook DB	Yes	No	Quick single-file view
Windows Mbox Viewer	Free, open source	EML, MBOX	Yes	TXT, PDF, HTML, CSV	MBOX archives (Gmail, Thunderbird)
FreeViewer EML Viewer	Free	EML	Yes	No (free tier)	Inspecting EML structure
MiTec Mail Viewer	Free	EML, MSG	Yes	No	Lightweight, no install
Kernel EML Viewer	Free	EML	Yes	No	Folders mixed with other files
SysTools EML Viewer	Free	EML	Limited	No	Basic viewing

CoolUtils Mail Viewer

CoolUtils MailViewer is a free EML and MSG files viewer with integrated tree navigation and handy message viewer. User has access to all his PC files directly inside the viewer. It supports HTML emails too. There can be some problems with reading specific languages, but it perfectly manages with English. Besides this you can copy or move files anywhere you wish. The program can generate reports about selected email originals in a few formats, such as:

TXT
HTML
PDF
XLS
CSV

Installation pack doesn't have any ads, spam and other hidden tricks. Download.com's rating is 4.5 based on 6 reviews.

http://www.coolutils.com/MailViewer

Free EML Reader

First, one may get suspicious with 1 star rating at Download.com. But we decided to try it and found it not that bad. This program requires no installation, and when you run it, you see an empty window. Don't worry, it has File option at the top menu. Using it you can open a single EML file (by specifying its location), Thunderbird message database, Outlook message database or a folder with EML files. The exported message can be viewed in plain or HTML view. The problem of this program is inability to navigate through folders or files quickly. User needs to open each item separately, that slows down the work in case of many EML source files located in different folders. Besides viewing there are no other options. However, the advantage of Free EML Reader is the absence of ads, spam, registration or adware.

http://www.emlreader.com/

Free Windows Mbox Viewer

This free open-source software can handle single EML messages and MBOX archives. It will let you view and export all attachments (including a quick preview of attached images) and extract messages as EML. The simple program can even handle large files exported from Google or Thunderbird. It will maintain your Gmail labels to allow you to search easily.

Users can merge multiple archive files (over 4 gb) and turn emails to TXT, PDF, HTML, or CSV files. The program also supports forwarding directly via the interface. Your filtering options with Windows Mbox Viewer will be limited to:

Searching by subject, date, sender, body, and attachment;
Sorting date, "To," "From," subject, and size;
Grouping of messages by conversation.

All of the features are absolutely free. The interface can also be customized with different background colors. It looks basic, but the tool does its job well. The tool is still being improved, but you can get it from the GitHub repository:

https://github.com/eneam/mboxviewer

FreeViewer EML Viewer

This software works with EML files from only three programs: Thunderbird, Mac Mail, and the obsolete Outlook Express. It will let you browse and view messages and attachments. The user-friendly interface supports seamless navigation.

With a single click, you can scan your archives for corrupt EML files. The program will scan their contents and reveal them in the dashboard. The Preview option has three formats (Hex, Email Header, Properties, etc.) and lets users select attributes like To, From, and Subject. The key advantages are:

Viewing and analysis of email files with attachments;
No file size limitations;
Compatibility with multiple versions of Windows from 2008 to Windows 10.

On the downside, the free version does not support multiple preview, advanced search, or export. The Freeviewer EML Viewer is inconvenient for tasks involving a lot of files. You won't be able to convert your messages into other formats, either. Therefore, if you are looking for advanced filtering or forensic options, purchase a license or consider other programs on the list.

https://www.freeviewer.org/eml/

MiTec Mail Viewer

It was a surprise to see almost the same application as Free EML Reader after running MiTec Mail Viewer. The only difference is that 'Open' menu automatically pops up after program's launch. The functionality is the same, as well as the problems.

Though MiTec Mail Viewer can be found at Download.com, one one has reviewed it yet.

http://www.mitec.cz/mailview.html

Kernel EML Viewer

This program has only one option - viewing EML files. It has a comfortable interface with navigation inside. It automatically filters EML files from the rest of folder's content. It's a great help, if email files are stored in Documents folder mixed with documents and photos.

The only problem with Kernel EML Viewer is that some files cannot be viewed inside the program. When clicking on such files inside the viewer, the popup asks to view it using external mail program. Probably, this is the reason of very low rank (1,5 stars) at Download.com. The ones that this program shows are displayed correctly. Message fields together with attachments are displayed as a single page.

http://www.nucleustechnologies.com/eml-viewer.html

SysTools EML Viewer

It is a pretty basic application with standard installation and no spam programs inside. It supports EML files and only allows viewing them. There is a separate tab in viewer for attachments. However the program failed to display a simple EML email with attached photo that were successfully viewed in other viewers. Neither email body nor attachment was displayed. It was tested on Windows 7, and perhaps it works better in other systems.

The viewer itself is a little bit uncomfortable because has a big heading with 'from', 'to' and other mail fields and very small area for viewing message text and attachments. They are resizable, but a comfortable proportion can hardly be found.

http://www.systoolsgroup.com/eml-viewer.html

Mail Viewer Customer Reviews 2026

Rate ItRated 4.5/5 based on customer reviews

"I tested several of the free EML viewers on this list to find one to hand out to non-technical clients. CoolUtils Mail Viewer opens EML files instantly without installing Outlook and shows attachments cleanly, which is exactly what our helpdesk needed for a zero-cost recommendation."

5 Star Brendan Cole IT Support Technician, Cole Managed Services

"Clients send me exported EML files and I don't have an Outlook license on my personal laptop. Comparing the seven tools in this roundup saved me from downloading three different free EML readers before finding one that actually renders HTML emails correctly."

4.5 Star Fatima Al-Rashid Freelance Virtual Assistant

"After my old email client stopped working I had a folder of EML backups I couldn't open. This comparison of free EML viewers pointed me to a portable option that needed no installation at all, though I did try two others first that turned out to be trialware in disguise."

4 Star Dmitri Volkov Home Office User

FAQ ▼

What is the free program to open EML files?

CoolUtils Mail Viewer is a free program to open EML files on Windows with tree navigation and HTML email support. It allows you to browse email attachments, generate reports in multiple formats (PDF, HTML, TXT, XLS, CSV), and has no ads or hidden tricks.

How do I view an EML file?

To view an EML file, download a free EML viewer like CoolUtils Mail Viewer or FreeViewer EML Viewer. Open the application, navigate to your EML file location through the file browser, select the file, and it will display the email content and attachments in a readable format.

How do I view EML files in Chrome?

Chrome doesn't natively support viewing EML files, but you can use CoolUtils Mail Viewer as a desktop alternative. For online viewing, you'd need to convert the EML file first using a tool like CoolUtils Online Mail Converter, which preserves formatting and attachments better than attempting to open EML files directly in Chrome.

Can Google open EML files?

Google doesn't directly open EML files in its standard applications. For viewing EML files, use a dedicated free EML viewer like CoolUtils Mail Viewer which provides better functionality including attachment viewing, message navigation, and report generation capabilities that Google products don't offer for EML format.

What is the best free EML viewer?

For most Windows users the best free EML viewer is CoolUtils Mail Viewer: it opens EML, MSG, EMLX, P7M, ICS, and VCF files without Outlook, previews attachments, and exports reports to PDF, HTML, TXT, XLS, or CSV. If you mainly work with MBOX archives, the open-source Windows Mbox Viewer is a strong free alternative.

How do I open an EML file without Outlook?

Install a standalone EML viewer such as CoolUtils Mail Viewer, then browse to your .eml file in the left-hand folder tree and click it to read the message and its attachments. No Outlook, Thunderbird, or webmail account is needed, and it is free for home use.

Is there an open-source EML viewer?

Yes. Windows Mbox Viewer is a free, open-source tool (hosted on GitHub) that opens single EML messages and MBOX archives, previews attachments, and exports to TXT, PDF, HTML, or CSV. For a polished free viewer that also handles MSG and EMLX, use CoolUtils Mail Viewer.

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