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Zero

Zero is a YC Spring 2025 (P25) company. Based in San Francisco, CA, USA. Team of 2.

  • Artificial Intelligence
  • Open Source
  • Email
  • AI Assistant

About Zero

GPAgent's own fund-neutral profile, written from public information. Updated Oct 5, 2026.

Summary

Zero builds an open-source AI email client for knowledge workers who spend significant time triaging and acting on email. It automatically summarizes incoming messages, surfaces tasks, and lets users interact with their inbox through a chat interface, replacing manual sorting, reading, and follow-up triage.

Go-to-market

Knowledge workers adopt Zero directly as their primary email client, through a self-serve model built around an open-source distribution.

From the Y Combinator listing

How Zero describes itself in Y Combinator's public directory. Original listing (opens in a new tab)

AI powered email client that manages your email so you don't have to.

Zero empowers knowledge workers by transforming the way they manage their email. It intelligently summarizes important messages, helps complete tasks, and even enables users to chat directly with their inbox.

Facts

Industry
B2B / B2B -> Productivity
Location
San Francisco, CA, USA
Team size
2
Status
Active
Stage
Early

Founders (2)

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