Windows · Free download · General

MSGViewer1.9

MSGViewer : View Outlook MSG format files and turn them into MBOX and EML, among other options, with this lightweight and portable utility built on the Java platform

Operating system
Windows 10/11
File size
4.4 MB
License
GPLv3
Last updated
May 1, 2026

134 downloads·581 page views

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Overview

What is MSGViewer?

MSGViewer : View Outlook MSG format files and turn them into MBOX and EML, among other options, with this lightweight and portable utility built on the Java platform

In depth

A closer look at MSGViewer

MSGViewer is a lightweight and portable utility built on the Java platform, that lets you view Microsoft Outlook MSG files in a user-friendly environment. Its main advantage is that it does not require Outlook installed on the PC.It is suffice to have Java installed on your computer, in order to run MSGViewer immediately. Otherwise, you can save the JNLP file to a USB flash drive or other similar device, in order to run it on any computer with minimum effort.What's important to keep in mind is that the tool does not add new entries to the Windows Registry, or leave files behind on the hard drive after removal.The interface of the application is made from a standard window with a plain and simple layout, where you can import MSG files using either the file browser or "drag and drop" method. Plus, you can adjust the font size and fix it, as well as convert the MSG file to MBOX or EML, supported by Unix and Thunderbird, respectively.Several settings can be made for this tool. For instance, you can modify the date format, language, icon size, log level and proxy host. These parameters mainly cater to advanced users.MSGViewer uses a moderate quantity of CPU and system memory, has a good response time and works well, without making the OS hang, crash or pop up error dialogs. We have not encountered any issues in our tests. All in all, MSGViewer delivers a straightforward solution to viewing MSG files, without the need of Outlook.

Verdict

Should you download MSGViewer?

MSGViewer runs on Windows 10/11 and is available under the GPLv3 license — the installer is 4.4 MB. We’ve catalogued it under General.

Verified clean. Every MSGViewer build on SoftLookup is scanned for viruses, spyware, adware, trojans and backdoors. We re-test on every update.
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At a glance

MSGViewer specifications

Category
General
Publisher
REDEYE Labs
Last updated
May 1, 2026
License
GPLv3
Operating system
Windows 10/11
File size
4.4 MB
Price
Free
Page views
581

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