msgdetach Description:

MSGDETACH - Detach Your Email Attachments and Save them wherever you want! Extract your message attachments from text,eml and msg files. MSGDETACH recursively crawls your specified input folder for your exported or saved email files. It then saves copies of the original attached files, found in the email files, to your choice of archive locations. You can group attachments into type based folders and even read zip files! NOW includes improved statistics and powerful command line options!
Functions
Provides an easy to use utility to scan through your stored email files and extract and archive the attachments found in those emails.

So ... if you have a lot of emails stored as individual files, and need to get the attachments out of them in an efficient and inexpensive manor ... MSGDETACH is for you!

Features
Windows compatibility
Speed
Reads email files
Saves Message Parts under their original stored names
Groups all of the extracted attachments in to your specified output location.
Allows for duplicate attachment names by serializing
Allows you to specify any input location
Allows you to select or deselect whether to search sub directories
Allows you to group attachments types together
Will read emails from within a zip file
Will create a log file of who sent attachments
Will create a log file of how many of each attachment type was found