ZOOK MSG to EML Converter

ZOOK MSG to EML Converter is a simple-to-use application that gives you the possibility to convert Outlook emails with the MSG extension into EML format. This way, you can easily migrate to email clients which support EML, such as Mozilla Thunderbird.

Convert MSG files to migrate to email clients with support for EML content

Installing this tool takes minimal time and effort. However, you should know that it doesn't work without .NET Framework. Modern Windows versiond have this feature built in, so you just have to make sure it's enabled.
Afterward, you can fire up ZOOK MSG to EML Converter to bring up the main app window with the clear-cut appearance, where you can take a look at all options before diving into the conversion.

Pick the MSG files or folder and specify the output directory

The operation is particularly easy since you just have to indicate the source files and the output directory. As far as the source is concerned, you can either select one or more files, or point out a folder that contains many MSG files. It doesn't matter whether or not it has other types of files, because anything else besides MSG is ignored, so you can proceed with the conversion without worries.
Once you click the "Convert" button, you can wait for the task to be over, which pretty much depends on the number and size of the MSG files. A message pops up at the end to let you know the job is done, and the output folder is automatically opened in Windows Explorer so you can inspect results.

The EML files are neatly organized in distinct subfolders

All files are created in a new subfolder whose date and time indicates the time of conversion. Conflicts regarding files with the same time can be avoided this way, and it's not necessary to change the output directory between conversions since the EML files are neatly organized in separate folders. The EML files have the same names as the MSG items so there should be no confusions.
To sum it up, ZOOK MSG to EML Converter provides you with a fast and straightforward solution for turning MSG files into EML format. It was speedy in our tests. On the other hand, it doesn't have a preview function or EML configuration settings.