Thunderbird CLI MCP Server

by vitalio-sh Your server? Claim it

local only

Thunderbird CLI runs on your own machine — the client starts it, so there is no endpoint to ping. 121 installs a week from npm. Last commit 14 Sep 2026.

Give AI agents full read/write email access via Mozilla Thunderbird. Zero credentials.

Installs per day peak 195 · avg 23 · +7% w/w

a month agotoday

121

Installs / week

npm · thunderbird-cli-mcp

Stars

10 open issues

14 Sep 2026

Last commit

1 release in 90 days

MIT

License

JavaScript

Nothing serious here today

Today is the operative word: we check Thunderbird CLI every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add thunderbird-cli -- npx -y thunderbird-cli-mcp

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

{
  "mcpServers": {
    "thunderbird-cli": {
      "command": "npx",
      "args": [
        "-y",
        "thunderbird-cli-mcp"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.thunderbird-cli]
command = "npx"
args = ["-y", "thunderbird-cli-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "thunderbird-cli": {
      "command": "npx",
      "args": [
        "-y",
        "thunderbird-cli-mcp"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "thunderbird-cli": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "thunderbird-cli-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: TB_BRIDGE_HOST (Hostname of the thunderbird-cli-bridge (default: 127.0.0.1). Set to host.docker.internal when running inside a container), TB_BRIDGE_PORT (HTTP port of the thunderbird-cli-bridge (default: 7700)).

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Tmailor temporary email

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Agent Email List

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Free email for agents. create_account needs no credentials, so an agent can sign itself up.

8 tools answering

Thunderbird CLI — questions

Answers built from our own checks of this server.

Why is there no uptime for Thunderbird CLI?

Thunderbird CLI runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package thunderbird-cli-mcp was installed 121 times last week.

How do I connect Thunderbird CLI?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls thunderbird-cli-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Thunderbird CLI?

The npm package thunderbird-cli-mcp was installed 121 times in the last week. Week over week that is +7%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Thunderbird CLI open source?

Yes — it is published under the MIT licence, written in JavaScript, 66 stars on GitHub and 10 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.