thunderbird / reply / only selected text

Apparently I’m not the only one who randomly selects text as they read. My colleagues complained about this issue too.

If you click Reply in Thunderbird Mail, only the text you recently selected is included in the new message. That’s not what I wanted!

Luckily the Mozilla developers realised this too. Go to about:config and flip the switch.

mailnews.reply_quoting_selection = false