Ubuntu 18.04 fresh installation, Thunderbird inbox "invaded" by large icons (coloured emojis)
This fixed it for me:
sudo apt-get install fonts-symbola
but turns the icons b/w!
From https://ubuntu-mate.community/t/thunderbird-with-huge-icons-emoticons-mate-18-04/16249/23
Here's a way of getting colored icons:
sudo apt-add-repository ppa:eosrei/fonts
sudo apt-get update
sudo apt-get install fonts-twemoji-svginot
I did not have to uninstall fonts-symbola for this to work but I don't know how Thunderbird decides which to use.
New font info from http://www.omgubuntu.co.uk/2016/08/enable-color-emoji-linux-google-chrome-noto