multi-mail runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 8 Nov 2026.
Several Gmail accounts: search, read, draft, send, labels and Google Calendar. Own OAuth client.
We read the source, 6 h ago · rules 995398eba69f
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.
spawn(cmd, args, { stdio: 'ignore', detached: true }).unref();
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
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.
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 multi-mail-mcp -- npx -y @yybd/multi-mail-mcp
{
"mcpServers": {
"multi-mail-mcp": {
"command": "npx",
"args": [
"-y",
"@yybd/multi-mail-mcp"
]
}
}
}
[mcp_servers.multi-mail-mcp]
command = "npx"
args = ["-y", "@yybd/multi-mail-mcp"]
{
"mcpServers": {
"multi-mail-mcp": {
"command": "npx",
"args": [
"-y",
"@yybd/multi-mail-mcp"
]
}
}
}
{
"servers": {
"multi-mail-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@yybd/multi-mail-mcp"
]
}
}
}
Optional settings from the registry entry, left out of the block above:
MULTI_MAIL_DEFAULT (Account used when a tool call names none (email or alias)), MULTI_MAIL_HOME (Folder holding credentials.json and account tokens (default ~/.multi-mail)), MULTI_MAIL_SEND (Set to off for drafts-only mode: no tool can send mail), MULTI_MAIL_TZ (IANA time zone for calendar tools, overriding each calendar's own setting).
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Answers built from our own checks of this server.