“After many months of development, Thunderbird 2.0 is almost
ready to debut. The Mozilla Foundation released the first beta of
Thunderbird 2.0 last week, and I’ve been using it to manage my mail
since then. The new release boasts tagging, history navigation, new
mail alerts, improved extension support, and a number of other
features. Thunderbird 2.0 won’t knock your socks off with exciting
new features, but it’s a nice, gradual improvement over the
Thunderbird 1.5 series.“One of the things I didn’t like about Thunderbird 1.x was that
you were limited to five labels for messages. You could customize
the color and text for the label, but five was the limit. Three
there shall not be, and six was right out. Thunderbird 2.0 ditches
labels altogether and goes for the Web 2.0 gusto with tags–as many
tags as you want…”