Underdog-Sort adds on-device email sorting before auto-replies in your voice

The announcement says Underdog-Sort 1.3.8 automatically categorizes emails before auto-replying in the user's voice. It says the decision model runs on-device and calls the feature “100% Private.” In a follow-up, the same poster says they post-trained Qwen 3 4B to run quickly on a MacBook by predicting one token instead of hundreds.