What it is
Jevmail is an open-source, read-only Gmail triage app for people who want inbox zero. It sorts mail into Needs reply, Updates, Promos, Sales, and Spam with a 1–5 urgency score, storing everything in a local SQLite file.
How it uses Jev
Each message becomes a plain-text block (sender, subject, headers, trimmed body). One experimental_evaluate call to typesafe-ai/jev asks three questions in parallel: which tray (choice), how urgent (score), and whether a human wrote it (boolean). Results and probabilities are stored; corrections are kept separately.
Primitives:choicescorenoul
Technique worth stealing
Ask one evaluation call with parallel typed questions instead of prompting an LLM and repairing JSON.
Try it
git clone, pnpm install, fill .env.local, pnpm dev, open localhost:3000.
Evidence
Each line is one question put to Jev about the README. ≥ 0.60 reads as yes, ≤ 0.40 as no; in between Jev is not making a call.
- Jev-centricyes0.93
- Shows a System One patternunclear0.59
- Handles uncertaintyno0.05
- Measuredyes0.88
- Runnableyes0.87
- Worth recommendingunclear0.44
- Model replicano0.03
- Problem scopescore on a 0–2 scale1.18
- About Jevyes0.98
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.