Resend Email MCP Server

A tiny, zero-config MCP (Model-Context-Protocol) server that lets LLMs send email through Resend.
Plug it into Claude Desktop, Cursor, or any other MCP client and start sending messages in seconds.

Demo

Watch the Demo

Deployed MCP Server Link

link

Quick start

1. Grab the code

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   git clone https://github.com/HamnaCh456/Resend_MCP_server.git
   cd resend-email-mcp
   

2. Install deps

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   pip install -r requirements.txt        # or: uv pip install fastmcp resend python-dotenv httpx
   

3. Set your Resend API key

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   export RESEND_API=re_YOUR_RESEND_KE
   

4. Run the server

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   After configuring the settings.json(in case you are using Gemini CLI) file ,give command to LLM to send an email with other specifications.
   

⚙️ Environment variables

🔧 Exposed tool

send_email

Send a single HTML email.

{
  "subject": "Hello from MCP",
  "to": "friend@example.com",
  "from_email": "you@yourdomain.com",
  "content": "<h1>Hi!</h1><p>Sent by an LLM 🤖</p>"
}

Return value: "Email sent successfully" or an error message.

🧪 Example session in Claude Desktop

1. Claude: “Send an email to alice@example.com with subject ‘Meeting notes’ and the notes in the chat.”
2. You type: @send_email
   Claude fills the parameters and calls the tool.
3. Email is delivered—no copy-paste needed.

Requirements

• Python 3.9+
• fastmcp, resend, python-dotenv, httpx

Install them quickly with:

pip install fastmcp resend python-dotenv httpx

Troubleshooting

Happy emailing!