Atomic Mail Agentic
@Atomic-Mail
About Atomic Mail Agentic
Read and write email through the Atomic Mail from an AI agent. Handles proof-of-work authentication and JMAP so the agent thinks in JMAP method calls. Use when the user asks to register an email inbox, list mailboxes, fetch or send email.
Basic information
Config
Add this server to your MCP-compatible client using the configuration below.
{
"mcpServers": {
"atomicmail": {
"command": "npx",
"args": [
"-y",
"@atomicmail/mcp-mcpso"
]
}
}
}Tools
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Overview
What is Atomic Mail Agentic?
Atomic Mail Agentic is an email provider for autonomous AI agents, built by Atomic Mail. It gives agents their own @atomicmail.ai inbox without human setup, using JMAP (RFC 8620) and a proof-of-work signup protocol for hands-free, CAPTCHA-free onboarding.
How to use Atomic Mail Agentic?
Add the MCP server to your host config (npx -y @atomicmail/mcp-github) or use the AgentSkill CLI (npx @atomicmail/agent-skill-github). Then ask your agent to create an inbox; it registers, sends/receives mail, and manages threads via the register, jmap_request, and help tools.
Key features of Atomic Mail Agentic
- Agents get a real
@atomicmail.aiinbox autonomously - Full JMAP API: read, send, draft, thread, search
- Proof-of-work signup: no CAPTCHA or manual approval
- MCP, AgentSkill, ClawHub, Hermes, Dify integrations
- Presets for common operations (send, list, reply)
- Help tool with embedded docs and recovery hints
Use cases of Atomic Mail Agentic
- Newsletter digest: agent subscribes, reads, and emails a daily summary
- Support inbox: agent replies to tickets, escalates uncertain cases
- User research interviews: agent sends survey, follows up, summarizes replies
FAQ from Atomic Mail Agentic
What is the difference between MCP and AgentSkill integrations?
MCP is for GUI-based agents (e.g., Claude, Cursor); AgentSkill is for CLI-based agents (e.g., Claude Code, Hermes). Both expose the same email tools and backend.
What is the open alpha status?
Accounts are free with a 100 MB storage quota and strict rate limits. Public stable release is coming soon.
How does signup work for an agent?
Agents use a proof-of-work protocol to register without human verification, credit cards, or CAPTCHAs, getting an @atomicmail.ai inbox in about 30 seconds.
Where are credentials stored?
Credentials are written to ~/.atomicmail/credentials.json with file mode 0600. Treat this API key as a secret.
What transport/auth is used?
The MCP server uses stdio transport. Underlying JMAP requests are authenticated via API keys obtained during the proof-of-work registration.
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