Java-MCP-Server-For-SMTP-Mailing

Overview

A comprehensive Java implementation of MCP server that bridges AI assistants with email services through SMTP integration. It supports multiple transport protocols (STDIO, SSE, and Streamable HTTP) and exposes email functionality through both MCP tools and REST endpoints. The server is well-structured with clear separation of concerns between MCP protocol handling, email service implementation, and transport layers.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• send-email

  Sends an email through SMTP with configurable recipients, subject, and body

  Try:Send an email to john@example.com with the subject 'Meeting Reminder' and body 'Don't forget about our meeting tomorrow at 2 PM.'Try:Email the team project updates with subject 'Weekly Progress Report'Try:Send a confirmation email to the customer with invoice details

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Installation

git clone https://github.com/RayenMalouche/Java-MCP-Server-For-SMTP-Mailing.git
cd Java-MCP-Server-For-SMTP-Mailing

private static final String SMTP_USERNAME = "your-email@gmail.com";
private static final String SMTP_PASSWORD = "your-app-password";
private static final String SMTP_HOST = "smtp.gmail.com";
private static final int SMTP_PORT = 587;
private static final boolean SMTP_TLS_ENABLED = true;

mvn clean package

java -jar target/RayenMalouche-0.0.1-SNAPSHOT.jar --stdio

{
  "mcpServers": {
    "smtp-email-server": {
      "command": "<JAVA_EXECUTABLE_PATH>",
      "args": [
        "-jar",
        "<FULL_PATH_TO_PROJECT>/target/RayenMalouche-0.0.1-SNAPSHOT.jar",
        "--stdio"
      ],
      "env": {
        "JAVA_HOME": "<JAVA_HOME_PATH>"
      }
    }
  }
}

FAQ

Which SMTP providers are supported?

The server supports Gmail, Microsoft Outlook/Hotmail, Yahoo Mail, and any custom SMTP server with configurable host, port, and security settings.

Can I send attachments with emails?

Attachment support is listed as planned in the README. Currently, the server supports basic email sending with HTML and plain text content, but attachments are not implemented yet.

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