Groundmail MCP

The Groundmail MCP server provides a curated set of tools for AI agents to manage transactional email operations. It allows agents to send emails, verify and add domains, manage templates, configure webhooks, handle suppressions, and manage tenants. It supports both hosted OAuth connections and local stdio execution via an npm package.

Visit Groundmail

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by Groundmail

You need:Card required to send: sending to anyone other than your own account email needs a verified domain and a payment method on file, on every plan.

Vendor documentation

What you can do with it

Send transactional emails via API
Verify and manage email domains
Manage email templates and webhooks
Handle bounces and suppressions

Source and maintenance

Community listingRegistry 0.20.1

mcp-registry: io.github.Groundmail/groundmail@0.20.1 Source repository Project website

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

groundmail-mcp 0.20.1

npmnpx

groundmail-mcp package definition

{
  "version": "0.20.1",
  "transport": "stdio",
  "identifier": "groundmail-mcp",
  "runtimeHint": "npx",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org",
  "environmentVariables": [
    {
      "name": "GROUNDMAIL_API_KEY",
      "format": "string",
      "isRequired": true,
      "description": "Groundmail API key (starts with gm_). Create one at https://app.groundmail.dev/api-keys"
    },
    {
      "name": "GROUNDMAIL_API_URL",
      "format": "string",
      "description": "Optional API base URL override (default https://api.groundmail.dev)"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "groundmail-mcp-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "groundmail-mcp@0.20.1"
      ],
      "env": {
        "GROUNDMAIL_API_KEY": "<YOUR_GROUNDMAIL_API_KEY>",
        "GROUNDMAIL_API_URL": "<YOUR_GROUNDMAIL_API_URL>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "groundmail-mcp-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "groundmail-mcp@0.20.1"
      ],
      "env": {
        "GROUNDMAIL_API_KEY": "<YOUR_GROUNDMAIL_API_KEY>",
        "GROUNDMAIL_API_URL": "<YOUR_GROUNDMAIL_API_URL>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "groundmail-mcp-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "groundmail-mcp@0.20.1"
      ],
      "env": {
        "GROUNDMAIL_API_KEY": "<YOUR_GROUNDMAIL_API_KEY>",
        "GROUNDMAIL_API_URL": "<YOUR_GROUNDMAIL_API_URL>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "groundmail-mcp-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "groundmail-mcp@0.20.1"
      ],
      "env": {
        "GROUNDMAIL_API_KEY": "<YOUR_GROUNDMAIL_API_KEY>",
        "GROUNDMAIL_API_URL": "<YOUR_GROUNDMAIL_API_URL>"
      }
    }
  }
}

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