How to Use Thunderbird, an Internet E-Mail Program
From Mozilla, the makers of the Firefox web browser, the Thunderbird Internet e-mail program is easy to use and free. The following outlines Thunderbird's main features:
Thunderbird is available for free from www.mozillamessaging.com.
Set up an e-mail account: Choose Tools→Account Settings.
Set your e-mail preferences: Choose Tools→Options.
Compose a new message: Press Ctrl+N or click the Write button.
Attach a file: Click the Attach button or choose File→Attach.
Check spelling before sending messages: Choose Tools→Options, click the Composition category, and select Check Spelling Before Sending.
Send and receive messages: Press Ctrl+Shift+T or choose File→Get New Messages For→Get All New Messages.
Delete the current message: Press Delete or click the Delete button.
Reply to the current message: Press Ctrl+R or click the Reply button.
Forward the current message: Press Ctrl+L or click the Forward button.
Display your Address Book: Press Ctrl+Shift+B or click the Address Book button.
Create a new mail folder: Choose File→New→New Folder, type a name, and set the Create As a Subfolder Of box to the folder name in which you want the new folder to live. Or right-click the folder in which you want to make a subfolder and choose New Subfolder.
Configure junk mail filtering: Choose Tools→Junk Mail Controls.
Create mail filters: Choose Tools→Message Filters from the menu to display the Message Filters window, where you can see, create, edit, and delete filters.