MailStream認証済み注目

What is MailStream MCP?

MailStream is the first MCP server for physical mail. It gives any MCP-compatible AI agent (Claude, Cursor, VS Code, and more) the ability to send real postcards and letters, verify addresses, manage mailing lists and artwork, and track direct mail campaigns.

Key features

• Send physical mail: postcards (4x6, 6x9, 6x11), letters, and radius mailer campaigns around any location
• 27 tools mirroring the MailStream REST API v1
• Address management: create, verify, and organize addresses and mailing lists; import from CSV
• Artwork: supply designs by URL or HTML
• Campaign control: track and cancel campaigns before dispatch
• Built-in docs: searchable API documentation and product catalog exposed as MCP resources

Setup

Add to your MCP config:

{
  "mcpServers": {
    "mailstream": {
      "url": "https://my.mailstream.app/mcp"
    }
  }
}

Or in Claude Code:

claude mcp add --transport http mailstream https://my.mailstream.app/mcp

Sign in with OAuth when prompted. No API keys to copy.

Links

• MCP server docs
• REST API docs