# Resend MCP Server

A Model Context Protocol (MCP) server for sending emails via the [Resend](https://resend.com) 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

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

Or run directly with npx:

```bash
npx @bugzy-ai/resend-mcp-server
```

## Configuration

Set the following environment variables:

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

## MCP Configuration

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

```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

```bash
# 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