The team behind the browser Firefox, has released the first 18 months, a major release e-mail client. Being free and open source, Thunderbird has been prepared in the offices of Environment under Windows, Mac OS X and Linux. Interestingly, Thunderbird skipped numbering 4.x, in order to comply with the current lineup Firefox 5. Mozilla Thunderbird 5.0 is characterized by a high-speed downloading, user interface and reorganized with movable tabs, highly informative, intelligent setup wizard email accounts (just ...