Benethos Mailbox MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 1 090 installs a week from pypi. Last commit 25 Oct 2026.
MCP server that gives AI agents your mailboxes through mailbox-service, within its token's rights.
What the code does
We read the source, 7 h ago · rules 995398eba69f
Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.
made = subprocess.run(
<select id="f-forward_as" name="forward_as">
<option value="inline"{% if values.get('forward_as') != 'attachment' %} selected{% endif %}>quoted, with its attachments</option>
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Nothing serious here today
Today is the operative word: we check Benethos Mailbox MCP 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 mcp add benethos-mailbox-mcp -e 'MAILBOX_SERVICE_TOKEN=<MAILBOX_SERVICE_TOKEN>' -- uvx benethos-mailbox-mcp{
"mcpServers": {
"benethos-mailbox-mcp": {
"command": "uvx",
"args": [
"benethos-mailbox-mcp"
],
"env": {
"MAILBOX_SERVICE_TOKEN": "<MAILBOX_SERVICE_TOKEN>"
}
}
}
}[mcp_servers.benethos-mailbox-mcp]
command = "uvx"
args = ["benethos-mailbox-mcp"]
env = { MAILBOX_SERVICE_TOKEN = "<MAILBOX_SERVICE_TOKEN>" }{
"mcpServers": {
"benethos-mailbox-mcp": {
"command": "uvx",
"args": [
"benethos-mailbox-mcp"
],
"env": {
"MAILBOX_SERVICE_TOKEN": "<MAILBOX_SERVICE_TOKEN>"
}
}
}
}{
"servers": {
"benethos-mailbox-mcp": {
"type": "stdio",
"command": "uvx",
"args": [
"benethos-mailbox-mcp"
],
"env": {
"MAILBOX_SERVICE_TOKEN": "<MAILBOX_SERVICE_TOKEN>"
}
}
}
}Put your own value in place of
<MAILBOX_SERVICE_TOKEN> (An API token of mailbox-service, made on a user's page in its UI. The server acts with that user's rights).
The author’s registry entry marks it as required.
Optional settings from the registry entry, left out of the block above:
MAILBOX_SERVICE_URL (The address of mailbox-service), MAILBOX_SERVICE_ALLOW_HTTP (Set to true to send the token over plain http to a service on another machine. Not needed for localhost or https).
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Benethos Mailbox MCP — questions
Answers built from our own checks of this server.