Fastmail MCP Server

by radiosilence

MCP server for Fastmail - read, search, and send emails via Claude

Node.jsstdio

context tax

pending

security

pending

cold start

pending

freshness

pending

Our reading of Fastmail, from the data

Fastmail is a ai & llm tools MCP server from radiosilence.

We haven't measured its tool list yet, so its token cost is unknown.

It runs locally on your machine over stdio.

Install Fastmail MCP server

claude mcp add fastmail-radiosilence -- npx -y fastmail-mcp-server

{
  "mcpServers": {
    "fastmail-radiosilence": {
      "command": "npx",
      "args": [
        "-y",
        "fastmail-mcp-server"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "fastmail-radiosilence": {
      "command": "npx",
      "args": [
        "-y",
        "fastmail-mcp-server"
      ]
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "fastmail-radiosilence": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "fastmail-mcp-server"
      ]
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "fastmail-radiosilence": {
      "command": "npx",
      "args": [
        "-y",
        "fastmail-mcp-server"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Freshness

Not enough public signals yet to judge maintenance.

Last commit (default branch)
no data · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
no data · official registry

How it compares in AI & LLM Tools

Against the most-starred ai & llm tools servers we index. Token cost is per model turn, measured from each server's live tool list.

Server	Stars	Tools	Tokens / turn	Freshness	Runs
Fastmail (this)	—	—	not measured	—	local
Memory	91,356	—	not measured	Active	local
Claude Flow	76,638	—	not measured	Active	local
Next AI Draw.io	36,318	—	not measured	Active	local
Serena Agent	30,371	—	not measured	Active	local
Trycua	30,160	—	not measured	Active	—

All ai & llm tools MCP servers

FAQ

›How do I install the Fastmail MCP server in Claude Code?

Run: claude mcp add fastmail-radiosilence -- npx -y fastmail-mcp-server. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Fastmail require an API key?

No required environment variables are declared in its published metadata.

›Can I use Fastmail as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Fastmail in the official MCP registry?

No. It was indexed from npm.

Sources and method

Package registry (npm / PyPI): listed
Last checked against all sources: 2026-10-19

The description, packages and links come from the maintainer's own published metadata. Token cost, security signals, freshness and the reading above are MCPSkillHub's own measurements; see the methodology. Spot an error? Request a correction or claim the listing.