Rated 5 out of 5 stars

I'm not mad about the icons, but using Thunderbird without Silvermel is a harrowing experience. I absolutely hate the Chrome style combined Title-bar/Tool-bar/whatever of the default theme and generally the default theme sucks and hurts my eyes. With the Rise of The Tools extension Thunderbird is actually usable again. Thank you!

This review is for a previous version of the add-on (1.5.5.1-signed).