SMTPfast MCP MCP server

The SMTPfast MCP server enables AI agents to manage email infrastructure and communications. It allows users to send transactional and batch emails, manage sending domains and DNS records, handle contact lists and suppressions, and analyze deliverability metrics. It supports OAuth 2.1 for secure authentication and provides tools for inspecting email status, logs, and analytics.

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

OAuth sign-inEndpoint checked 2026-10-05Operated by SMTPfast

MCP endpoint (Streamable HTTP)

https://smtpfa.st/api/mcp

Vendor documentation

What you can do with it

Send transactional or batch emails via AI assistant
Manage sending domains and verify DNS records
Analyze email deliverability and bounce rates
Manage contact lists and suppression rules

Connect from your client

Each snippet registers the same endpoint; pick the client you 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.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http smtpfast-mcp https://smtpfa.st/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add smtpfast-mcp --url https://smtpfa.st/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable smtpfast-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "smtpfast-mcp": {
      "url": "https://smtpfa.st/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "smtpfast-mcp": {
      "type": "streamableHttp",
      "url": "https://smtpfa.st/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start smtpfast-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "smtpfast-mcp": {
      "type": "http",
      "url": "https://smtpfa.st/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http smtpfast-mcp https://smtpfa.st/api/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "smtpfast-mcp": {
      "url": "https://smtpfa.st/api/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "smtpfast-mcp": {
      "serverUrl": "https://smtpfa.st/api/mcp"
    }
  }
}

See all 1,687

Do you run SMTPfast MCP?

Prove ownership with a DNS record, a well-known file, or your Official MCP Registry entry, and your edits publish immediately. Proofs are re-checked weekly; admins can still hide or remove a listing.

Claim this listing