📧 Replai – AI-Powered Email Reply Generator

Replai is a productivity-focused AI tool that generates context-aware, tone-specific email replies in seconds.
It is designed to eliminate the repetitive effort of drafting responses and helps professionals communicate faster, smarter, and more effectively.

Built with a Flutter frontend (Web + Mobile), a Spring Boot backend, and Gemini API integration, Replai also comes with a Chrome Extension so you can draft replies directly inside Gmail.

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🌟 Why Replai?

Writing emails often consumes unnecessary time. People struggle with:

• Choosing the right tone (formal vs casual).
• Maintaining consistency in professional communication.
• Rewriting repetitive replies multiple times a day.

Replai solves this problem by:

• Generating ready-to-send responses instantly.
• Allowing tone customization based on your context.
• Making replies available anywhere – Web, Mobile, and Gmail.

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🏗️ Architecture

Replai follows a modular architecture combining Frontend (Flutter Web + Mobile, Chrome Extension), Backend (Spring Boot), and AI (Gemini API) to deliver seamless email reply generation.

🔄 System Flow

• User → Inputs email text & selects tone
• Flutter App / Chrome Extension → Sends request to backend
• Spring Boot Backend → Handles logic and forwards to Gemini API
• Gemini API → Generates AI-powered reply
• Backend → Sends reply back to frontend
• User → Views or directly inserts reply into Gmail

📂 Project Structure

Replai/
├── email-writer/               # Spring Boot server
├── email_writer_flutter/       # Flutter Web + Mobile app
├── email-writer-extention/     # Chrome extension
├── screenshots/                # Previews
└── README.md                   # Documentation

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⚙️ Features

🤖 AI-Powered Email Generation – Generates instant, context-aware replies.
🎭 Tone Control – Choose from multiple tones: formal, friendly, casual, persuasive, etc.
📋 Clipboard Copy – Copy replies with one tap/click.
🌐 Cross-Platform – Works on Web, Android, iOS.
🧩 Chrome Extension – Reply inside Gmail without switching apps.
⚡ Backend Reliability – Built with Spring Boot for scalability.
✨ Gemini API Integration – Smart, natural, and human-like responses.

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🛠️ Tech Stack

• Frontend (App): Flutter (Web + Android + iOS)
• Backend: Spring Boot (Java, Maven)
• AI: Gemini API (Google)
• State Management (Flutter): GetX
• UI: Material Design + Custom Widgets
• Extension: Chrome Manifest v3 (JavaScript, HTML, CSS)

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⚡ Setup Chrome Extension

1. Open Chrome → chrome://extensions/
2. Enable Developer Mode (top-right).
3. Click Load unpacked.
4. Select the chrome-extension/ folder.
5. Done 🚀 – Extension appears in your toolbar.

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🎮 Usage

1. Open Replai (Web, Mobile, or Extension).
2. Paste or type the incoming email text.
3. Select a tone (formal, casual, etc.).
4. Click Generate Reply.
5. Copy to clipboard or directly paste in Gmail (via extension).

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♻️ Contributing

Thanks for wanting to contribute! Please:

1. Fork the repo
2. Create a branch: git checkout -b feature/short-description
3. Commit: git commit -m "Add: short description"
4. Push: git push origin feature/short-description
5. Open a Pull Request describing the change

Please run tests and update docs as needed.

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🙏 Acknowledgements

• Flutter — Cross-platform app development
• Spring Boot — Scalable backend framework
• Gemini API — AI-powered natural language generation
• GetX — State management for Flutter
• Chrome Extension API (Manifest v3) — Browser integration
• Open Source Community — Libraries, tools & support

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👨‍💻 Author

Developed by Abbas Ansari ✨

• 💼 LinkedIn
• 💻 GitHub
• 📩 Email: abbasxansari@gmail.com