Published March 23, 2026
0.email
0.email is a YC company building an open-source AI-native email client. It focuses on inbox organization, thread summaries, AI replies, chat with your inbox, and self-hosting flexibility.
Rating
4 / 5 stars
Last Tried
March 23, 2026
Human Reviewed
Yes
What 0.email does well
- It is built as an AI-native email client instead of just adding a few AI features on top of a conventional inbox.
- Thread summaries, reply help, inbox organization, and chat-style interaction with your email make it feel broader than a standard email client.
- The open-source angle and self-hosting flexibility are meaningful differentiators for technical users who want more control.
Where it falls short
- It is more of a full AI email client than a narrowly focused inbox cleaning tool.
- The self-hosting and open-source positioning will matter more to technical users than to most everyday inbox users.
- If your only goal is quickly clearing clutter, a more specialized cleaner can feel more direct.
Verdict
0.email earns 4 / 5 stars. It is a strong AI-native email client and the YC company angle adds credibility, but it is broader than a pure inbox-cleaning product and fits best for users who want a more ambitious email platform.