CompactHeader :: Add-ons for ThunderbirdThere are two new addons, which look like they can replace most of the functionality of this add-on for Thunderbird 78+: https://addons.thunderbird.net/en-US/thunderbird/addon/compact-headers/ https://addons.thunderbird.net/en-US/thunderbird/addon/msghdr-toolbar-customize/ Add symbol in header plane to switch between compact and expanded view. Work only for Thunderbird 68.0 and older. Currently, t
