Give AI agents full read/write email access via Mozilla Thunderbird. Zero credentials.
Connect Runs on your machine
claude mcp add thunderbird-cli -e TB_BRIDGE_HOST=<TB_BRIDGE_HOST> -e TB_BRIDGE_PORT=<TB_BRIDGE_PORT> -e TB_AUTH_TOKEN=<TB_AUTH_TOKEN> -- npx -y [email protected]{
"mcpServers": {
"thunderbird-cli": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"TB_BRIDGE_HOST": "<TB_BRIDGE_HOST>",
"TB_BRIDGE_PORT": "<TB_BRIDGE_PORT>",
"TB_AUTH_TOKEN": "<TB_AUTH_TOKEN>"
}
}
}
}{
"mcpServers": {
"thunderbird-cli": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"TB_BRIDGE_HOST": "<TB_BRIDGE_HOST>",
"TB_BRIDGE_PORT": "<TB_BRIDGE_PORT>",
"TB_AUTH_TOKEN": "<TB_AUTH_TOKEN>"
}
}
}
}{
"servers": {
"thunderbird-cli": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"TB_BRIDGE_HOST": "<TB_BRIDGE_HOST>",
"TB_BRIDGE_PORT": "<TB_BRIDGE_PORT>",
"TB_AUTH_TOKEN": "<TB_AUTH_TOKEN>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
TB_BRIDGE_HOSTOptional | Hostname of the thunderbird-cli-bridge (default: 127.0.0.1). Set to host.docker.internal when running inside a container. |
TB_BRIDGE_PORTOptional | HTTP port of the thunderbird-cli-bridge (default: 7700). |
TB_AUTH_TOKENOptional, secret | Bearer token, required only if the bridge was started with TB_AUTH_TOKEN. |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 12 Nov 2026 |
| Last updated | 12 Nov 2026 |
| Registry name | io.github.vitalio-sh/thunderbird-cli |
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