Thunderbird extension to reduce header size to one or two lines

Name
Last commit
Last update
chrome/CompactHeader Loading commit data...
debian Loading commit data...
defaults/preferences Loading commit data...
test Loading commit data...
.hgignore Loading commit data...
.hgtags Loading commit data...
.travis.yml Loading commit data...
LICENSE Loading commit data...
README.md Loading commit data...
appveyor.yml Loading commit data...
build.xml Loading commit data...
chrome.manifest Loading commit data...
install.rdf Loading commit data...