// integration

CLAUDE DESKTOP

Enable Claude to send SMS and email through Fastsend

Set up my agent

// step 1

Open Claude Desktop configuration

Go to Settings → Developer → Edit Configuration to open your claude_desktop_config.json file.

// step 2

Add Fastsend MCP server

Add the following configuration to your mcpServers object:

claude_desktop_config.json

{
  "mcpServers": {
    "fastsend": {
      "url": "https://fastsend.dev/mcp"
    }
  }
}

// step 3

Restart Claude Desktop

Quit and reopen Claude Desktop to load the new MCP server.

// step 4

Start sending messages

Ask Claude to send SMS or email messages:

You: Send an SMS to +1234567890 saying "Meeting in 5 minutes"

Claude: I'll send that SMS for you.

[Claude uses the send_message tool via Fastsend MCP]

Claude: Message sent successfully! ID: msg_abc123. The message has been queued for delivery.

// tip

Use Set up my agent to copy one prompt into Claude. The full guide is available there when you need it.