@thunderbird I don't know actually, you type in the name of the software with : at the front & : at the end, lower case no space. It's used here on the @fosstodon instance, others include :firefox: :libreoffice: :linux: :android: etc. A lot of us have these in our bios to exoress support for the software we use. Perhaps @fosstodon admins @kev & @mike know?