Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Rated 4 out of 5 stars
Very useful extension.
Unfortunately it doesn't work properly with SearchWP extension, when set to incrementally size. In some cases it starts increasing search box size until it reaches max size.
Until this is fixed I'm forced to disable Autosizer :(
The author didn't respond to my emails regarding this issue...