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Atomic Mail

remote (hosted) MCP server

Atomic Mail is a remote (hosted) MCP server: Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server. Connect any MCP client to https://mcp.atomicmail.ai/mcp.

Installation

Terminal

claude mcp add --transport http atomic-mail-github-io https://mcp.atomicmail.ai/mcp

Run in your project folder. Add --scope user to use it everywhere.

Claude Desktop

Open Settings → Connectors → Add custom connector, then paste https://mcp.atomicmail.ai/mcp.

Cursor & other clients

Add to .cursor/mcp.json or your client's MCP config.

{
  "mcpServers": {
    "atomic-mail-github-io": {
      "type": "http",
      "url": "https://mcp.atomicmail.ai/mcp"
    }
  }
}

What you need

  • Runtime: Nothing, it's hosted.
  • MCP client: Claude Code, Codex, Antigravity, Claude Desktop, Cursor or any other client that speaks MCP over streamable HTTP.
  • Environment variables: ATOMIC_MAIL_CREDENTIALS_DIR, ATOMIC_MAIL_API_KEY, ATOMIC_MAIL_AUTH_URL, ATOMIC_MAIL_API_URL, ATOMIC_MAIL_INBOX_DOMAIN

Summary

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

Atomic Mail vs similar servers

ServerStarsTypeAPI keyRuntime
Atomic Mail264HostedYesNone
mcp-ssh-manager493LocalYesnpm
google-analytics-mcp242LocalYespypi
mcp229LocalYesnpm
email-mcp118LocalNonpm

Questions

It reads 5 environment variables: ATOMIC_MAIL_CREDENTIALS_DIR, ATOMIC_MAIL_API_KEY, ATOMIC_MAIL_AUTH_URL, ATOMIC_MAIL_API_URL, ATOMIC_MAIL_INBOX_DOMAIN. Set them in your MCP config before starting the server.

Only an MCP client such as Claude Code, Codex, Claude Desktop or Cursor. Atomic Mail is hosted, so there is nothing to install.

Atomic Mail is a remote (hosted) MCP server served at https://mcp.atomicmail.ai/mcp.

Run: claude mcp add --transport http atomic-mail-github-io https://mcp.atomicmail.ai/mcp

Run: codex mcp add atomic-mail-github-io --url https://mcp.atomicmail.ai/mcp

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NameStars
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  2. google-analytics-mcpio.github.surendranb/google-analytics-mcp242
  3. mcpio.github.agenticmail/mcp229
  4. email-mcpio.github.codefuturist/email-mcp118
  5. smailsio.github.pexni/smails36
  6. wigoloio.github.KnockOutEZ/wigolo5,418
  7. DBHubio.github.bytebase/dbhub3,574
  8. brightdata-mcpio.github.brightdata/brightdata-mcp2,660