Mozilla Thunderbird is a fully featured, very functional, secure email client and RSS feed reader, created by Mozilla. It offers a pretty and streamlined interface to a very powerful email package and lets you handle mail efficiently and with style, and Thunderbird filters away junk mail too. Thunderbird is a sophisticated and very well integrated Bayesian spam filter knocks out most junk mail (after some training). Combine these two aspects of Thunderbird, and you get a sensible feature that automatically sanitizes (potentially dangerous) HTML code and turns off remote images for spam or anything else – worms, viruses – you classify as bad mail. Though not perfect, a scam sensor detects tactics commonly used to fool users.