Mails.ai — Agent Email MCP Server

by rolloutsai Your server? Claim it

local only

Mails.ai — Agent Email runs on your own machine — the client starts it, so there is no endpoint to ping. 76 installs a week from npm. Last commit 4 Sep 2026.

A real inbox for AI agents: send, receive and thread email, behind a prompt-injection firewall.

Installs per day peak 450 · avg 25 · -80% w/w

a month agotoday

Installs / week

npm · @mailsai/mcp-server

Stars

0 open issues

4 Sep 2026

Last commit

0 releases in 90 days

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check Mails.ai — Agent Email 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 mails-agent-email -- npx -y @mailsai/mcp-server

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

{
  "mcpServers": {
    "mails-agent-email": {
      "args": [
        "-y",
        "@mailsai/mcp-server"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mails-agent-email]
command = "npx"
args = ["-y", "@mailsai/mcp-server"]

.cursor/mcp.json

{
  "mcpServers": {
    "mails-agent-email": {
      "args": [
        "-y",
        "@mailsai/mcp-server"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mails-agent-email": {
      "args": [
        "-y",
        "@mailsai/mcp-server"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: MAILS_API_KEY (Your mails.ai API key. Use an mk_test_ key to run against the sandbox or an mk_live_ key to send real mail. Free key at https://mails.ai), MAILS_BASE_URL (Override the API base URL. Defaults to the hosted mails.ai API; only needed for staging or self-hosted deployments.). The author declared them in the registry entry; get the values from the project itself.

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Mails.ai — Agent Email — questions

Answers built from our own checks of this server.

Why is there no uptime for Mails.ai — Agent Email?

Mails.ai — Agent Email 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 @mailsai/mcp-server was installed 76 times last week.

How do I connect Mails.ai — Agent Email?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls @mailsai/mcp-server straight from npm; nothing to host, nothing to sign up for.

How many people use Mails.ai — Agent Email?

The npm package @mailsai/mcp-server was installed 76 times in the last week. Week over week that is -80%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Mails.ai — Agent Email open source?

Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The repository it was published from is no longer reachable, so the code cannot be read right now.