Thunderbird provides the most effective tools for detecting junk mail. Our tools analyze your e-mail and identify those that are most likely to be junk. You can automatically have your junk mail deleted or you can put it in a folder you specify, just in case you like reading junk mail. What's New in Thunderbird 3:Tabs and SearchIf you like Firefox’s tabbed browsing, you’re going to love tabbed email. Thunderbird 3’s tabbed email lets you load emails in separate tabs so you can quickly jump between them. Your Mail, Your Way Customize Thunderbird however you want, whether it’s to make you more productive or to make Thunderbird more fun. You can choose from hundreds of add-ons like Personas to change Thunderbird’s look. You can now find and install new add-ons directly from the Add-ons Manager.