Just a few years back, AI agents mainly existed in the form of basic-tool-using chatbots. While there was public curiosity, factors such as reliability, security concerns, and costs kept the technology within the early adopter segment.
Fast forward to today, coding agents like Claude Code, Codex, and Cursor have significantly influenced programmers globally. Now, AI agents are employed for a variety of tasks, from large-scale debugging and building marketing strategies to organizing schedules and appointments. OpenClaw’s prominent introduction earlier this year enhanced this expansion, enabling users to operate their personalized and localized AI agents continuously.
The future, according to industry predictions, indicates a vast proliferation of AI agents, potentially matching the number of internet users. These agents are expected to automate numerous tasks, engage with software, communicate, shop, and handle various jobs autonomously.
AgentMail, a San Francisco-based startup, envisions this future unfolding and has developed a specialized email service for AI agents. Their platform provides APIs to set up email inboxes for AI agents, with capabilities for dual communication, parsing, threading, labeling, searching, and replying.
The company recently secured $6 million in seed funding led by General Catalyst, with contributions from Y Combinator, Phosphor Capital, and angel investors such as Paul Graham, Dharmesh Shah (HubSpot CTO), Paul Copplestone (Supabase CEO), and Karim Atiyeh (Ramp CTO).
AgentMail introduced an onboarding API that allows AI agents to independently establish their email inboxes. The platform allows for manual configuration of inboxes, permissions, allowlists, and API keys.
Co-founder and CEO Haakam Aujla explained that AgentMail aims to provide AI agents with an email experience similar to what human users enjoy with services like Gmail or Outlook, without the need for UI components. The platform also offers a human-useable interface for managing agent inboxes, and reading and sending emails.
“Gmail offers threads with messages and attachments, all of which can be labeled, searched, filtered, replied to, and forwarded. We want agents to handle this without manual screen interactions, focusing on API calls instead,” Aujla said to TechCrunch.
Since joining Y Combinator’s Summer 2025 batch, AgentMail has attracted numerous users, including tens of thousands of humans, hundreds of thousands of agent users, and more than 500 B2B clients.
The early days were slow since AI agents weren’t mainstream yet. AgentMail initially targeted B2B clients seeking to scale email communications. However, the emergence of OpenClaw (formerly Clawdbot) in January led to a significant user increase for AgentMail, with triple growth that week and quadruple in February as the demand for AI-operated email inboxes rose.
Their timing was advantageous, as traditional email services like Gmail enforce restrictions on API usage frequency and volume. AgentMail offers generous free tiers, paid plans, and enterprise subscriptions.
However, providing email access to AI agents presents misuse risks. To mitigate this, Aujla highlighted measures such as capping unauthenticated agent inbox emails to 10 per day, regulating rate limits on unusual activity, monitoring bounce rates, and scrutinizing new accounts for sensitive keywords.
Aujla emphasized that beyond email communication, AgentMail intends to serve as an identity layer for AI agents: “We aim to give agents email capabilities akin to human use, as email is fundamentally about identity rather than mere communication. Instead of inventing new identity protocols, we’re leveraging existing systems ingrained in internet use.”
“With an email address, an agent can access virtually any current software service.”