Thunderbird CLI runs on your own machine — the client starts it, so there is no endpoint to ping. 285 installs a week from npm. Last commit 14 Sep 2026.
Give AI agents full read/write email access via Mozilla Thunderbird. Zero credentials.
What the code does
We read the source, 19 h ago · rules 3dff92dd89df
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
этот файл ставится пользователю, но в репозитории его нет
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
This code can reach further than it looks
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
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 mcp add thunderbird-cli -- npx -y thunderbird-cli-mcp{
"mcpServers": {
"thunderbird-cli": {
"args": [
"-y",
"thunderbird-cli-mcp"
],
"command": "npx"
}
}
}[mcp_servers.thunderbird-cli]
command = "npx"
args = ["-y", "thunderbird-cli-mcp"]{
"mcpServers": {
"thunderbird-cli": {
"args": [
"-y",
"thunderbird-cli-mcp"
],
"command": "npx"
}
}
}{
"mcpServers": {
"thunderbird-cli": {
"args": [
"-y",
"thunderbird-cli-mcp"
],
"command": "npx"
}
}
}This one needs environment variables set before it will start:
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).).
The author declared them in the registry entry; get the values from the project itself.
Alternatives to Thunderbird CLI
same job, measured the same wayGive AI agents a real email address, vault, calendar, and task delegation via MCP.
Give AI agents secure access to your email via private aliases with dedicated mailbox storage.
Zero-config disposable email inboxes for AI agents: create, read mail, await verify codes.
Full read + write access to Slack Lists for AI: create, update, check off, reassign, delete.
Give an AI agent its own email address: send, reply, read, and wait for mail.
Free email for agents. create_account needs no credentials, so an agent can sign itself up.
AI agents read & send email, manage mailboxes, domains and webhooks via the QMailing API.
Allow AI systems to read, send, archive, and manage emails via Gmail.
Thunderbird CLI — questions
Answers built from our own checks of this server.