Email Sending
A simple MCP server that enables users to send emails using Resend's API, integrating with tools like Cursor and Claude Desktop for seamless email composition and delivery.
What is Email Sending?
Email Sending is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to simple mcp server that enables users to send emails using resend's api, integrating with tools like cursor and claude desktop for seamless email composition and delivery.
A simple MCP server that enables users to send emails using Resend's API, integrating with tools like Cursor and Claude Desktop for seamless email composition and delivery.
This server falls under the Communication category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- A simple MCP server that enables users to send emails using
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx email-sending-mcpConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Email Sending
The Resend MCP server connects AI assistants like Claude Desktop and Cursor directly to Resend's email delivery API, enabling full email lifecycle management from composition to delivery. It supports sending HTML and plain-text emails with attachments, CC/BCC, scheduling, and reply-to addresses, as well as managing contacts, broadcasts, templates, domains, and webhooks. Teams that rely on Resend for transactional or marketing email can use this server to automate email workflows through natural language, without writing any code.
Prerequisites
- Node.js 18 or later installed
- A Resend account with a verified sending domain (resend.com)
- A Resend API key (RESEND_API_KEY) from the Resend dashboard
- An MCP-compatible client such as Claude Desktop or Cursor
Create a Resend account and verify a domain
Sign up at resend.com, add your sending domain, and complete DNS verification. A verified domain is required before you can send email.
Generate a Resend API key
In the Resend dashboard, navigate to API Keys and create a new key with full access. Copy the key value — it will only be shown once.
Add the server to your MCP client configuration
Open your MCP client config file (e.g. claude_desktop_config.json) and add the resend-mcp server entry with your API key. Optionally set a default sender address from your verified domain.
{
"mcpServers": {
"resend": {
"command": "npx",
"args": ["email-sending-mcp"],
"env": {
"RESEND_API_KEY": "re_xxxxxxxxx",
"SENDER_EMAIL_ADDRESS": "[email protected]",
"REPLY_TO_EMAIL_ADDRESSES": "[email protected]"
}
}
}
}Restart your MCP client
Save the config file and restart Claude Desktop or your chosen MCP client so it picks up the new server definition.
Verify the connection
Ask the AI to list your Resend domains or send a test email. A successful response confirms the API key is valid and the server is running.
Email Sending Examples
Client configuration
Minimal claude_desktop_config.json entry for the Resend MCP server using npx.
{
"mcpServers": {
"resend": {
"command": "npx",
"args": ["email-sending-mcp"],
"env": {
"RESEND_API_KEY": "re_xxxxxxxxx",
"SENDER_EMAIL_ADDRESS": "[email protected]"
}
}
}
}Prompts to try
Example natural language prompts you can use once the server is connected.
- "Send an email to [email protected] with subject 'Meeting Tomorrow' and a brief reminder about our 10am standup"
- "List all emails I've sent in the last 24 hours"
- "Create a contact for [email protected] and add them to the newsletter segment"
- "Schedule a promotional email to go out next Monday at 9am EST"
- "Show me all my verified sending domains"Troubleshooting Email Sending
Error: 'Invalid API Key' or 401 responses when sending email
Double-check that RESEND_API_KEY in your config exactly matches the key shown in the Resend dashboard. Ensure you haven't accidentally included extra whitespace or quotes.
Email fails with 'Sender domain not verified'
The SENDER_EMAIL_ADDRESS must use a domain you have verified in Resend. Check the Domains section of your Resend dashboard and complete DNS record setup before retrying.
npx command not found or server fails to start
Ensure Node.js 18+ is installed and npx is available in your PATH. Run 'node --version' in a terminal to confirm. On some systems you may need to specify the full path to npx in the 'command' field.
Frequently Asked Questions about Email Sending
What is Email Sending?
Email Sending is a Model Context Protocol (MCP) server that simple mcp server that enables users to send emails using resend's api, integrating with tools like cursor and claude desktop for seamless email composition and delivery. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Email Sending?
Follow the installation instructions on the Email Sending GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Email Sending?
Email Sending works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Email Sending free to use?
Yes, Email Sending is open source and available under the MIT License license. You can use it freely in both personal and commercial projects.
Email Sending Alternatives — Similar Communication Servers
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Browse More Communication MCP Servers
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