On-device classification with Apple Intelligence on a compatible Mac, plus a classifier fix for school and youth-activity mail.
On a Mac running macOS 26 or later with Apple Intelligence available, Premail can classify mail using the on-device model. No access key, no account, no per-message cost, and message content never leaves the machine.
The on-device path sorts into broad groups first and then refines, which measured meaningfully more accurate than classifying in a single pass.
Fixed a classifier behavior that could file mail from school and youth-activity platforms as bulk mail.
The bundled Apple Intelligence helper is signed as part of the release, and the release checks that it stayed signed.