Mail::ListDetector::Detector::ListSTAR(3pm) on Linux
The text 3b6d3faaff4e, as Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
ListSTAR message detector
The text 3b6d3faaff4e, as Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
ListSTAR message detector