MailStore provides you with the ability to backup and view e-mail from multiple sources. The Home Edition of the program is provided at no cost to you and can be downloaded from the following link:
http://www.mailstore.com/en/mailstore-home-email-archiving.aspx
Instructions for archiving the .EML files from the flash drive to your computer, (which essentially imports the e-mail files for viewing), can be found here:
You can also use Mozilla Thunderbird to import .EML files if you choose to.