The San Francisco startup, supported by General Catalyst and Y Combinator, believes email is key for AI agents to establish a presence online without needing a new identity protocol.
AI agents already manage tasks like booking meetings and negotiating contracts, but they lacked dedicated email addresses—until now. AgentMail, a San Francisco startup from Y Combinator’s Summer 2025 batch, raised $6 million in seed funding to address this. The funding was led by General Catalyst, with Y Combinator, Phosphor Capital, and angel investors like Paul Graham, Dharmesh Shah, Paul Copplestone, Karim Atiyeh, and Taro Fukuyama.
AgentMail offers an API platform that gives AI agents functional email inboxes, enabling two-way communication, threading, labeling, searching, replying, and parsing structured data from messages. An inbox is created with a single API call, requiring no OAuth flows or manual setup. The platform integrates with LangChain, LlamaIndex, and CrewAI, and supports any framework capable of making an API call.
Along with funding, AgentMail is launching an onboarding API that allows AI agents to independently navigate the platform, create an inbox, and start using it without developer involvement. Some agents have already begun doing this autonomously, as reported by the company in their launch post.
Co-founders Haakam Aujla, Michael Kim, and Adi Singh, with backgrounds in quantitative research, autonomous vehicles, and investment roles, emphasize that AI agent identity issues do not need a new protocol. Email serves as the internet’s identity layer, integrated across services and applications. According to Aujla, providing an agent with an email address enables it to use existing software services.
The company’s progress accelerated after the viral success of OpenClaw in January 2026, which created demand for agent infrastructure like AgentMail’s. User numbers rapidly increased, now reaching tens of thousands of human users, hundreds of thousands of agent users, and over 500 B2B customers.
Diverse use cases have emerged, from supply chain teams using agents for real-time email coordination to loan collection reminders and procurement bots negotiating with vendors. AgentMail addresses the challenge of scaling email for agent deployments, unlike traditional providers like Gmail that impose rate limits intended for individual use.
While giving AI agents their own email addresses poses potential misuse risks, Aujla outlines safeguards like limiting outbound emails, monitoring activity patterns, and sampling new accounts. The company will address these controls’ adequacy as the platform grows.
For General Catalyst’s Yuri Sagalov, investing in AgentMail is based on the premise that email is central to internet identity, and traditional services were not designed for agentic use cases. Aujla sees AgentMail’s goal as building from email, the fundamental architecture of online identity. As more agents perform tasks humans currently do, they’ll need not just inboxes but credentials, reputation, and trust. AgentMail aims to provide this starting point for the next wave of internet users.