Email Server
About
# Mailer MCP A Model Context Protocol (MCP) server for sending emails. This server is designed to be completely SMTP provider agnostic, allowing you to use any SMTP relay service of your choice (Gmail, SendGrid, Mailgun, SMTP2Go, etc.) by simply configuring the appropriate environment variables. The server provides…
Details
- License
- MIT
Explore
- Send emails to specified recipients
- Test email functionality
- Environment variable configuration
- Proper error handling and logging
- TypeScript implementation for type safety
Setting up with Highlight
This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:
- Download and install Highlight from highlightai.com/download
- Navigate to the plugins tab and select "Add Custom Plugin"
-
Configure the plugin with the settings below
Plugin Name
Email ServerCommand (node, npx, python, etc.)Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
- Enable "Start Automatically" if you want the plugin to start when Highlight launches
From the repository
1. Clone the repository:
git clone https://github.com/yourusername/mailer-mcp.git
cd mailer-mcp
2. Install dependencies:
npm install
3. Build the project:
npm run build
Add the following to your Cline MCP settings configuration file:
"email-server": {
"autoApprove": [],
"disabled": false,
"timeout": 60,
"command": "node",
"args": [
"path/to/mailer-mcp/dist/index.js"
],
"env": {
"SMTP_HOST": "smtp.example.com",
"SMTP_PORT": "587",
"SMTP_USER": "[email protected]",
"SMTP_PASSWORD": "password123",
"EMAIL_FROM": "[email protected]"
},
"transportType": "stdio"
}
Claude Desktop / Cursor
Paste into your MCP client config file to install this server.
{
"mcpServers": {
"email server": {
"email-server": {
"autoApprove": [],
"disabled": false,
"timeout": 60,
"command": "node",
"args": [
"pathToTheBuild/dist/index.js"
],
"env": {
"SMTP_HOST": "smtp.smtp2go.com",
"SMTP_PORT": "2525",
"SMTP_USER": "[email protected]",
"SMTP_PASSWORD": "your-password",
"EMAIL_FROM": "[email protected]",
"SMTP_TIMEOUT": "30000"
},
"transportType": "stdio"
}
}
}
}McpServers
{
"email-server": {
"autoApprove": [],
"disabled": false,
"timeout": 60,
"command": "node",
"args": [
"pathToTheBuild/dist/index.js"
],
"env": {
"SMTP_HOST": "smtp.smtp2go.com",
"SMTP_PORT": "2525",
"SMTP_USER": "[email protected]",
"SMTP_PASSWORD": "your-password",
"EMAIL_FROM": "[email protected]",
"SMTP_TIMEOUT": "30000"
},
"transportType": "stdio"
}
}Mailer MCP
A Model Context Protocol (MCP) server for sending emails. This server is designed to be completely SMTP provider agnostic, allowing you to use any SMTP relay service of your choice (Gmail, SendGrid, Mailgun, SMTP2Go, etc.) by simply configuring the appropriate environment variables. The server provides tools for sending emails through SMTP using environment variables for configuration.
Features
- Send emails to specified recipients
- Test email functionality
- Environment variable configuration
- Proper error handling and logging
- TypeScript implementation for type safety
Installation
1. Clone the repository:
git clone https://github.com/yourusername/mailer-mcp.git
cd mailer-mcp
2. Install dependencies:
npm install
3. Build the project:
npm run build
Configuration
The server requires the following environment variables to be set in the MCP configuration:
| Variable | Description | Example |
|----------|-------------|---------|
| SMTP_HOST | SMTP server hostname | smtp.example.com |
| SMTP_PORT | SMTP server port | 587 |
| SMTP_USER | SMTP username | [email protected] |
| SMTP_PASSWORD | SMTP password | password123 |
| EMAIL_FROM | Sender email address | [email protected] |
Optional environment variables:
| Variable | Description | Default |
|----------|-------------|---------|
| SMTP_SECURE | Use secure connection (TLS) | false |
| SMTP_REJECT_UNAUTHORIZED | Reject unauthorized TLS certificates | true |
| SMTP_TIMEOUT | Connection timeout in milliseconds | 10000 |
MCP Configuration
Add the following to your Cline MCP settings configuration file:
"email-server": {
"autoApprove": [],
"disabled": false,
"timeout": 60,
"command": "node",
"args": [
"path/to/mailer-mcp/dist/index.js"
],
"env": {
"SMTP_HOST": "smtp.example.com",
"SMTP_PORT": "587",
"SMTP_USER": "[email protected]",
"SMTP_PASSWORD": "password123",
"EMAIL_FROM": "[email protected]"
},
"transportType": "stdio"
}
Available Tools
send_email
Sends an email to a specified recipient.
Parameters:
- recipient (string, required): Email address of the recipient
- body (string, required): Email body content
Example:
{
"recipient": "[email protected]",
"body": "Hello, this is a test email from the MCP server."
}
test_email
Sends a test email to verify the configuration.
Parameters: None
Development
1. Start the TypeScript compiler in watch mode:
npm run dev
2. Make your changes to the source files in the src directory.
3. The TypeScript compiler will automatically recompile the files when changes are detected.
License
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