I'd like an update on this bug from '''13 years ago''': https://bugzilla.mozilla.org/show_bug.cgi?id=617855&_gl=1*gb8y9x*_ga*MTgyNzg4NzE5My4xNjc4OTkwNjcw*_ga_2VC139B3XV*MTcwNDI5NzQ5OC4xOS4xLjE3MDQzMDExMDUuMC4wLjA. Since there's been a lot of questions/reports about it and '''no solution''': https://support.mozilla.org/en-US/questions/1046162 https://support.mozilla.org/en-US/questions/1412812 (archived without solution nor comment from dev team) https://stackoverflow.com/questions/77752049/how-to-sort-thunderbird-inbox-by-unread-status-including-unread-thread-emails There must be a way to fix this easily, since a thread is considered to have a "date" corresponding to the most recent message it has received (allowing it to be sorted by date as expected). In this process of changing the date of a thread to its most recent message, just mark the thread as unread at the same time?