# How Jev-Mail works The CLI installs and manages a worker in your Google Apps Script project. A time trigger checks the inbox every five minutes by default. Jev evaluates action needed, importance, and category from a bounded email excerpt. Code validates the response before applying a label, star, or optional archive. Uncertain messages remain in Review. Processing receipts prevent duplicate work, and new replies are evaluated again. User stars are preserved. Source: https://github.com/vynnlee/jev-mail