Rated 4 out of 5 stars

Great! I may have wished to have a bit more options about what to see and maybe to toggle between standard and compact header, but so far it's really improving the experience with Thunderbird on smaller screens... Except that it seems that the compact header defines a minimum width which will make my window (under ubuntu), when maximized, reach over the end of my screen (on a tiny netbook) - or is there some other addon incompatibility??

This review is for a previous version of the add-on (2.0.7).