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Zero

Open-source AI email client for organizing inboxes, summarizing threads, and drafting replies.

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Overview

Zero is an open-source AI email client that connects to services such as Gmail and Outlook. It provides an inbox interface with AI-assisted organization, thread summaries, conversational email search, and drafted replies. The project can be self-hosted and is designed for people who want an AI-native frontend for their existing mail providers.

Key features

  • Unified inbox for multiple providers
  • AI-assisted email organization
  • Thread summarization
  • Conversational inbox search
  • Draft and reply assistance
  • Self-hosting with an MIT-licensed codebase

Use cases

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Last updated 2026-09-16