This add-on adds four new columns called "Sender (@)", "Sender Domain (@)", "Recipients (@)" and "Recipients Domains (@)" in message list containing full, raw addresses of sender and recipient as well as their domains instead of just names like in the default columns.
This add-on is reimplementation of "Show address only" which stopped working in Thunderbird 78. This add-on source was originally based on "SFreq" by Jorg K. Version working with Supernova update is based on examples provided by John Bieling.