Rated 5 out of 5 stars

New user of Thunderbird here and I'm not yet used to tabs for email messages (though I want to get used to it; I think tabs are neater than new windows). The bad thing is that when I want to close a message, I always ended up closing Thunderbird completely. This add-on works wonderfully (I love how you've tweaked it to minimize to the taskbar because I much prefer that to the system tray) and will be a lifesaver while I get used to TB. So thank you.