Thunderbird ESR, Portable Edition

Thunderbird® ESR, Portable Edition is the Extended Support Release of the popular Thunderbird email client. It is always a different version than Stable according to our ESR release schedule. It is intended for groups who deploy and maintain the desktop environment in large organizations such as universities and other schools, county or city governments and businesses and the developers who support them. Individual users should generally use standard Thunderbird, Portable Edition. Thunderbird is the safe, fast email client that's easy to use. It has lots of great features including quick message search, customizable views, support for IMAP/POP, RSS support and more. Plus, the portable version leaves no personal information behind on the machine you run it on, so you can take your email and adress book with you wherever you go.