io.github.Atomic-Mail/mcp

npm

Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server.

310 14.4M/wk GitHub npm

No known CVEs

No license

Actively maintained

Last commit 19d ago

Works with most clients

Transport: stdio, sse, http

0 tools

Grade F

MCPpedia last refreshed this data 6h ago

Edit this pageView history

Communication AI / ML

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "atomicmail": {
      "args": [
        "-y",
        "@atomicmail/mcp-github"
      ],
      "command": "npx"
    }
  }
}

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Read me

What io.github.Atomic-Mail/mcp does

🧪 Open Alpha: Accounts are free, 100mb storage quota, strict rate-limits. Public stable release is coming soon.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'npm' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

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Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

21/100across 5 weighted dimensions

How we score →

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−79

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Compatibility

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Security

OSV.dev

No known CVEs.

Checked npm against OSV.dev.

Community

Reviews

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How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.Atomic-Mail/mcp safe to use?: io.github.Atomic-Mail/mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.github.Atomic-Mail/mcp?: io.github.Atomic-Mail/mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with io.github.Atomic-Mail/mcp?: io.github.Atomic-Mail/mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is io.github.Atomic-Mail/mcp actively maintained?: io.github.Atomic-Mail/mcp is actively maintained — last commit was 19 days ago. It has 310 GitHub stars.

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Community

Discussion

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Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Atomic Mail Agentic

Give your agent a real inbox

🧪 Open Alpha: Accounts are free, 100mb storage quota, strict rate-limits. Public stable release is coming soon.

Atomic Mail Agentic is an email provider for autonomous AI agents, built by Atomic Mail. Agents register their own @atomicmail.ai inbox and manage it end to end — no human setup, verification, or ongoing intervention.

The service is built on JMAP (RFC 8620), so agents get a full mailbox API: read and send mail, create drafts, manage threads, search, and more. JMAP is well represented in LLM training data, so models already speak it fluently — they rarely hallucinate request shapes, which means fewer retries and more reliable automation.

Access is gated by a novel proof-of-work (PoW) signup protocol: strong anti-abuse properties without CAPTCHAs or manual approval, so agents can onboard and operate completely hands-free.

Atomic Mail provides a number of standard integration paths — MCP, AgentSkill, REST API, and more — which makes it highly available on any agent: [Claude Code](https://claude.com/product/claude-code

Frequently Asked Questions

Is io.github.Atomic-Mail/mcp safe to use?

io.github.Atomic-Mail/mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install io.github.Atomic-Mail/mcp?

io.github.Atomic-Mail/mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What AI clients work with io.github.Atomic-Mail/mcp?

io.github.Atomic-Mail/mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is io.github.Atomic-Mail/mcp actively maintained?

io.github.Atomic-Mail/mcp is actively maintained — last commit was 19 days ago. It has 310 GitHub stars.

Atomic Mail Agentic

Give your agent a real inbox

Website · Docs · Issues

🧪 Open Alpha: Accounts are free, 100mb storage quota, strict rate-limits. Public stable release is coming soon.

Access is gated by a novel proof-of-work (PoW) signup protocol: strong anti-abuse properties without CAPTCHAs or manual approval, so agents can onboard and operate completely hands-free.

... View full README on GitHub