openagentemail
openagent.email is an open-source, self-hosted email service designed specifically for AI agents. It provides unlimited real mailboxes on your own domain, allowing agents to receive and send email through REST and MCP interfaces. The project is positioned as an alternative to AgentMail and is licensed under Apache-2.0, with a self-hosted-first approach. The platform includes built-in extraction for OTP codes and verification links from real-world emails, including messages from US and Chinese providers. It supports agent-to-agent task threads with server-stamped states, scoped tokens per identity, and a wait_for long-polling mechanism. Phone push notifications with configurable content tiers are available, and a web dashboard gives humans oversight of agent email activity. Setup is guided via an npm wizard that handles VPS/domain choices, local demo, and MCP client configuration. The service works with any MCP client such as Claude Code, Cursor, and Windsurf, as well as plain REST. A hosted Pro option is available for those who do not want to manage their own infrastructure.
- Category
- AI Agents
- Pricing
- Free
Problem solved
AI agents often need email addresses to sign up for services, receive one-time passwords, and communicate with other agents. Existing email APIs are either hosted, limited, or not designed for agent workflows. openagent.email solves this by letting you self-host unlimited mailboxes on your own domain, exposing them to agents via REST and MCP, and automatically extracting OTPs and verification links.
Use cases
- Receive and extract OTP codes from signup verification emails
- Send email from agent-specific identities on your domain
- Coordinate agent-to-agent tasks via email-backed threads
- Integrate with MCP clients like Claude Code, Cursor, and Windsurf
- Monitor agent email activity through a web dashboard
- Get phone push notifications for important agent emails
Audience
- Developers
- ML Engineers
- Startups
- Enterprise
- Hobbyists
Pros
- Open source under Apache-2.0
- Unlimited mailboxes on your own domain
- Built-in OTP and verification-link extraction
- REST and MCP support for any agent
- Human dashboard with phone push notifications
Cons
- Requires self-hosting with a domain and VPS
- Email deliverability depends on server reputation
- Setup requires technical expertise
- Not a fully managed service unless using paid hosted option
- May be overkill for simple notification use cases
Official website: https://openagent.email/
Canonical LambdaBase page: https://www.lambdabase.com/tools/openagentemail