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SMTP MCP server

Send emails using Simple Mail Transfer Protocol

SMTP is not a separate install. One Activepieces MCP server exposes it alongside 760+ other apps, behind a single URL.

Start building See the SMTP integration
Tools
1
Works with
Any MCP client
Auth
Custom auth
License
MIT, open source
Updated
August 2026

About the SMTP MCP server

Connect SMTP once in Activepieces and every action it ships becomes a tool your assistant can call, behind the same server URL as the rest of your apps. Your agent reaches SMTP and 760+ other apps over a single connection, on our cloud or a self-hosted install.

Tools

SMTP tools your AI can run

Once connected, your assistant can call any of these SMTP actions by asking in plain language.

  • Send Email

    Send an email using a custom SMTP server.

    11 fields

Give your assistant SMTP

Connect SMTP once and every tool above is callable from Claude, Cursor or any MCP client, behind the same server URL as 760+ other apps. Free to start.

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SMTP MCP, answered.

No. That is the point of it. One Activepieces server exposes SMTP alongside every other piece you connect, so your client keeps a single connection.

Yes. Activepieces is open source and free to start, and the MCP server is included on every plan, from the free cloud tier to any self-hosted deployment.

Connect SMTP in Activepieces, enable the server under Settings → MCP Server, then paste your server URL into your client config. It authenticates over OAuth on first use.

It can call 1 tool, including Send Email, and chain them with steps in other apps inside the same run.

Connections use OAuth2 with limited scopes and are stored under 256-bit encryption, with no API to read them back, so an agent gets scoped access rather than your keys.

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