Email Automation Revolution: Local-First AI Agent Architecture with IMAP Sync & WebSocket Streaming

「TL;DR」 This guide breaks down an open-source Email Agent prototype that integrates IMAP synchronization, a local SQLite cache, a lightweight Bun backend with WebSocket streaming, and an LLM-driven agent that calls tools (e.g., search_emails) to retrieve and act on mailbox data. The design emphasizes low latency, local data control, clear tool interfaces, and a pragmatic path from prototype to production. Executive summary Modern knowledge workers need AI assistance for routine email tasks — triage, summarization, and drafting — but often cannot or will not send their entire mailbox to a third-party cloud service. The Email Agent prototype we analyze here …