How does RadMail decide what's important?
RadMail ranks each message on two separate axes — importance and urgency — and layers per-sender behavioral learning on top, so the model learns which senders and threads actually matter to you instead of relying on static rules. Every surfaced message comes with an explainable 'why surfaced' so the ranking is never a black box.
tl;dr Two axes (importance x urgency) + per-sender learning + an explainable reason.