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Atomic Mail

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

Connector by Atomic-Mail · GitHub account verified by the MCP Registry

IndexedMITLocal (stdio)Remote (HTTP)★ 264
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Install

Works with Claude Code, VS Code, Codex, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/atomic-mail-mcp

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

  • https://mcp.atomicmail.ai/mcp Remote (HTTP)

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About

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

Use cases: email

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
1 read · 1 write · 1 delete
Secrets
1 (API keys, tokens or passwords)
Install scripts
None found
Runs as
Node.js package

Tools by what they do 3

Read from the source code; the running server may list different tools.

Read 1 · Look things up without changing anything.

  • help

Write 1 · Create, change, send or run things.

  • register

Delete 1 · Delete, drop, revoke or wipe things.

  • jmap_request

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

  • ATOMIC_MAIL_API_KEY

Other settings (environment variables or headers).

  • ATOMIC_MAIL_API_URL
  • ATOMIC_MAIL_AUTH_URL
  • ATOMIC_MAIL_CREDENTIALS_DIR
  • ATOMIC_MAIL_INBOX_DOMAIN

Network hosts it talks to 1

  • mcp.atomicmail.ai · found in remote endpoint, install command

Tools (3)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • helpAtomic Mail documentationread-only

    Description is built at runtime.

  • jmap_requestSend a JMAP requestcan change or delete data

    JMAP method-call batch with automatic auth. Exactly one of: ops (JSON string) or ops_file (preset path). Supports vars placeholder substitution and optional local-file attachments.

  • registerRegister an Atomic Mail inbox

    PoW signup; writes credentials. Usernames are 5-21 chars. Idempotent for same username and stored inbox; different username is rejected unless forced=true is provided. After success, arrange a daily inbox polling per runtime (help topic cron).

Compare and alternatives

    Featured in

    Signals

    Stars
    264
    Forks
    64
    Open issues
    1
    Weekly downloads
    173
    Last commit
    Oct 22, 2026 (8 days ago)
    Last release
    Sep 27, 2026 (1 month ago)
    Last package publish
    Sep 27, 2026 (1 month ago)

    From GitHub (fetched Oct 24, 2026) and the package registry.

    Details

    Registry name
    io.github.Atomic-Mail/mcp
    Version
    0.3.27
    Auth
    Auth not stated, API key
    Packages
    npm @atomicmail/mcp-modelcontextprotocol
    License
    MIT
    Repository
    github.com/Atomic-Mail/atomic-mail-agentic
    Website
    atomicmail.ai
    First seen
    Oct 24, 2026
    Last checked
    Oct 25, 2026
    Source
    Official MCP Registrygithub-graphql

    More from Atomic-Mail

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    Cite this page

    Atomic Mail MCP server. Agent Mart. https://agentmart.dev/connectors/atomic-mail-mcp (last updated 2026-10-25)