Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Brilliant. Rated 5 out of 5 stars
Better than the sidebar in Opera since it can be re-sized to any width I want! Hooray!!!!!!!!
One thing though, is there a way to indicate that a tab is pinned (without disturbing the interface, which is delightfully compact)? Maybe with a slightly different background for pinned tabs?