Send16 MCP Server

by spruikcoio.github.spruikco/send16-mcpv0.5.8

Email for AI agents: send mail, manage contacts, automations & webhooks. Zero-DNS first send.

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Maintained3mo ago

Install Send16 MCP server

claude mcp add send16 -e SEND16_API_KEY='<send16-api-key>' -- npx -y send16-mcp

{
  "mcpServers": {
    "send16": {
      "command": "npx",
      "args": [
        "-y",
        "send16-mcp"
      ],
      "env": {
        "SEND16_API_KEY": "<send16-api-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "send16": {
      "command": "npx",
      "args": [
        "-y",
        "send16-mcp"
      ],
      "env": {
        "SEND16_API_KEY": "<send16-api-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "send16": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "send16-mcp"
      ],
      "env": {
        "SEND16_API_KEY": "<send16-api-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "send16": {
      "command": "npx",
      "args": [
        "-y",
        "send16-mcp"
      ],
      "env": {
        "SEND16_API_KEY": "<send16-api-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
SEND16_API_KEY	yes	yes	Your Send16 API key (sk_live_...), from https://send16.com/dashboard/developers

Remote endpoints

streamable-httphttps://mcp.send16.com/mcp

Freshness

Maintained — last maintenance signal 3mo ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-07-19 · 3mo ago · GitHub
Latest release
2026-07-11 · 3mo ago · GitHub · v0.5.6
Package published
no data · npm/PyPI
Registry entry updated
2026-07-12 · 3mo ago · official registry · v0.5.8

FAQ

›How do I install the Send16 MCP server in Claude Code?

Run: claude mcp add send16 -e SEND16_API_KEY='<send16-api-key>' -- npx -y send16-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Send16 require an API key?

Yes. It expects SEND16_API_KEY, of which 1 is a secret.

›Can I use Send16 as a remote (hosted) MCP server?

Yes — it offers both a hosted endpoint and a local stdio package.

›Is Send16 in the official MCP registry?

Yes, as io.github.spruikco/send16-mcp.