Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Rated 5 out of 5 stars
Works fine for me in FF 3.6.11.
I am using this function (prev. with Copy Plain Text) for years now - simple & effective. Therefore five stars. BTW: Often addons don't get along with other addons in the basket. So if not working you should try to deactivate your other addons to find the bug.