When you read your emails, you use a web mail clients such Gmail, AOL, Hotmail or Yahoo for example. Whenever you read emails using those online clients you need to have access to internet. If you need to take your emails wherever you go, you can download all your messages in a mail program on your computer or on a memory stick and then read them later or when you need them. This is also good a way to keep a copy of your important messages on your computer. In this tutorial I will show you how to use Thunderbird to retrieve your emails from the Internet, while leaving a copy on your web mail. You can access all your messages from the Internet, but also from your USB drive. Of course, this latest version contains all the messages until your last login.