SMTP

Name: SMTP
Author: ni-c

ni-c

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MCP server that sends mail over SMTP, gated behind an allowlist and a human confirmation

Setup

Choose your client, copy the config, then fill in any required environment variables.

Add to Cursor Add to VS Code

claude mcp add smtp-ni-c --env SMTP_HOST='<SMTP_HOST>' --env SMTP_USER='<SMTP_USER>' --env SMTP_PASSWORD='<SMTP_PASSWORD>' --env SMTP_FROM='<SMTP_FROM>' -- npx -y @ni-c/smtp-mcp

~/.codex/config.toml

[mcp_servers.smtp-ni-c]
command = "npx"
args = ["-y", "@ni-c/smtp-mcp"]
env = { SMTP_HOST = "<SMTP_HOST>", SMTP_USER = "<SMTP_USER>", SMTP_PASSWORD = "<SMTP_PASSWORD>", SMTP_FROM = "<SMTP_FROM>" }

# codex mcp add smtp-ni-c --env SMTP_HOST='<SMTP_HOST>' --env SMTP_USER='<SMTP_USER>' --env SMTP_PASSWORD='<SMTP_PASSWORD>' --env SMTP_FROM='<SMTP_FROM>' -- npx -y @ni-c/smtp-mcp

~/.cursor/mcp.json

{
  "mcpServers": {
    "smtp-ni-c": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/smtp-mcp"
      ],
      "env": {
        "SMTP_HOST": "<SMTP_HOST>",
        "SMTP_USER": "<SMTP_USER>",
        "SMTP_PASSWORD": "<SMTP_PASSWORD>",
        "SMTP_FROM": "<SMTP_FROM>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "smtp-ni-c": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/smtp-mcp"
      ],
      "env": {
        "SMTP_HOST": "<SMTP_HOST>",
        "SMTP_USER": "<SMTP_USER>",
        "SMTP_PASSWORD": "<SMTP_PASSWORD>",
        "SMTP_FROM": "<SMTP_FROM>"
      }
    }
  }
}

~/.gemini/settings.json

{
  "mcpServers": {
    "smtp-ni-c": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/smtp-mcp"
      ],
      "env": {
        "SMTP_HOST": "<SMTP_HOST>",
        "SMTP_USER": "<SMTP_USER>",
        "SMTP_PASSWORD": "<SMTP_PASSWORD>",
        "SMTP_FROM": "<SMTP_FROM>"
      }
    }
  }
}

claude_desktop_config.json

{
  "mcpServers": {
    "smtp-ni-c": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/smtp-mcp"
      ],
      "env": {
        "SMTP_HOST": "<SMTP_HOST>",
        "SMTP_USER": "<SMTP_USER>",
        "SMTP_PASSWORD": "<SMTP_PASSWORD>",
        "SMTP_FROM": "<SMTP_FROM>"
      }
    }
  }
}

.trae/mcp.json

{
  "mcpServers": {
    "smtp-ni-c": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/smtp-mcp"
      ],
      "env": {
        "SMTP_HOST": "<SMTP_HOST>",
        "SMTP_USER": "<SMTP_USER>",
        "SMTP_PASSWORD": "<SMTP_PASSWORD>",
        "SMTP_FROM": "<SMTP_FROM>"
      }
    }
  }
}

Environment variables

SMTP_HOST
SMTP_USER
SMTP_PASSWORD
SMTP_FROM

Replace the placeholders with your own credentials and keep them out of version control.

Setup

Environment variables

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