Resend MCP Server

A Model Context Protocol (MCP) server for sending emails via the Resend API. Designed for use with Claude Code and other MCP-compatible AI assistants.

Features

• Send single emails with HTML or plain text content
• Send batch emails (up to 100 in one call)
• Support for CC, BCC, and reply-to addresses
• Custom tags for email tracking
• Platform-controlled sender address for security

Installation

npm install @bugzy-ai/resend-mcp-server

Or run directly with npx:

npx @bugzy-ai/resend-mcp-server

Configuration

Set the following environment variables:

RESEND_API_KEY=re_xxxxxxxxxxxxx
RESEND_FROM_EMAIL="Bugzy <notifications@yourdomain.com>"

MCP Configuration

Add to your MCP configuration (e.g., .mcp.json):

{
  "mcpServers": {
    "resend": {
      "command": "resend-mcp-server",
      "env": {
        "RESEND_API_KEY": "${RESEND_API_KEY}",
        "RESEND_FROM_EMAIL": "${RESEND_FROM_EMAIL}"
      }
    }
  }
}

Available Tools

resend_send_email

Send a single email to one or more recipients.

Parameters:

• to (required): Email address(es) - string or array (max 50)
• subject (required): Email subject line
• html (optional): HTML content
• text (optional): Plain text content (one of html/text required)
• cc (optional): CC recipient(s)
• bcc (optional): BCC recipient(s)
• reply_to (optional): Reply-to address(es)
• tags (optional): Array of {name, value} for tracking

resend_send_batch_emails

Send multiple emails in a single API call.

Parameters:

• emails (required): Array of email objects (max 100)
  • Each email has the same parameters as resend_send_email

Development

# Install dependencies
npm install

# Run in development mode
npm run dev

# Build for production
npm run build

# Lint code
npm run lint

License

Apache-2.0