A comprehensive AI-powered email assistant that helps users generate professional email replies using Google's Gemini API. The project consists of three main components: a Spring Boot backend, a React frontend, and a Chrome extension.

• Features
• Architecture
• Project Structure
• Prerequisites
• Setup and Installation
  • Backend Setup
  • Frontend Setup
  • Chrome Extension Setup
• Usage
  • Web Application
  • Chrome Extension
• API Endpoints
• Environment Variables
• Technologies Used
• Contributing
• License

• AI-Powered Email Generation: Uses Google's Gemini API to generate professional email replies
• Tone Selection: Choose from different tones (Professional, Casual, Friendly, Formal) for email replies
• Web Interface: Clean React-based web application for generating email replies
• Chrome Extension: Directly generate email replies within Gmail interface
• Copy to Clipboard: Easily copy generated emails to clipboard

The project follows a client-server architecture:

1. Backend: Spring Boot application that serves as the API layer, communicating with Google's Gemini API
2. Frontend: React web application providing a user-friendly interface for email generation
3. Chrome Extension: Browser extension that integrates directly with Gmail's compose window

.
├── Backend/                 # Spring Boot application
│   ├── src/
│   │   ├── main/java/com/email_writer/app/
│   │   │   ├── EmailGeneratorController.java
│   │   │   ├── EmailGeneratorService.java
│   │   │   └── EmailRequest.java
│   │   └── resources/
│   │       └── application.properties
│   └── pom.xml
├── Frontend/                # React web application
│   ├── src/
│   │   ├── App.jsx
│   │   └── main.jsx
│   └── package.json
└── chrome-extension/        # Chrome extension
    ├── content.js
    └── manifest.json

• Java 21+
• Maven 3.8+
• Node.js 16+
• npm 8+
• Google Gemini API Key

1. Navigate to the Backend directory:

   cd Backend

2. Set up environment variables: Create a .env file in the Backend directory or set system environment variables:

   GEMINI_URL=https://generativelanguage.googleapis.com/v1beta/models/gemini-pro:generateContent?key=
   GEMINI_KEY=your_gemini_api_key_here

3. Build the project:

   ./mvnw clean install

4. Run the application:

   ./mvnw spring-boot:run

   The backend will start on port 8080.

1. Navigate to the Frontend directory:

   cd Frontend

2. Install dependencies:

   npm install

3. Run the development server:

   npm run dev

   The frontend will start on port 5173.

1. Open Chrome and navigate to chrome://extensions/

2. Enable "Developer mode" in the top right corner

3. Click "Load unpacked" and select the chrome-extension directory

4. The extension will be installed and visible in the Chrome toolbar when visiting Gmail

1. Start both the backend and frontend servers
2. Open your browser and navigate to http://localhost:5173
3. Enter the email content you want to reply to
4. Optionally select a tone for the reply
5. Click "Generate Reply"
6. Copy the generated reply to your clipboard using the "Copy to Clipboard" button

1. Navigate to Gmail and open a conversation
2. Click "Reply" to open the compose window
3. Select the desired tone from the dropdown
4. Click the "AI Reply" button
5. The generated reply will automatically appear in the compose box

Request Body:

{
  "emailContent": "string",
  "tone": "string" // Optional: professional, casual, friendly, formal
}

Response:

Generated email reply as plain text

• Java 21
• Spring Boot 3.5.7
• Spring Web
• Spring WebFlux
• Maven

• React 19
• Vite
• Material UI
• Axios

• JavaScript
• Chrome Extension APIs

Contributions are welcome! Please feel free to submit a Pull Request.