ReplyAI

AI-powered reply suggestions for LinkedIn, Gmail, and Facebook Marketplace

ReplyAI is a lightweight browser extension that helps you write better replies instantly using AI. It adds a simple “✨ Reply” button next to message input fields on supported platforms like LinkedIn, Gmail, and Facebook Marketplace. With one click, ReplyAI analyzes the conversation context and generates multiple reply suggestions tailored to the tone of the message. Whether you're responding to professional messages, emails, or marketplace inquiries, ReplyAI helps you save time and communicate more effectively. ✨ Key Features • One-click AI reply generation directly inside websites • Works on LinkedIn, Gmail, and Facebook Marketplace • Generates multiple reply suggestions with different tones • Clean, non-intrusive floating button and overlay UI • Shadow DOM isolation to ensure compatibility with all sites • No account required — use your own OpenAI API key • Fast and lightweight (no frameworks, no build step) 🎯 Use Cases • Reply to LinkedIn messages professionally • Answer emails faster in Gmail • Respond to buyers and sellers on Facebook Marketplace • Improve tone and clarity in conversations • Save time on repetitive replies 🔒 Privacy & Security ReplyAI respects your privacy: • No data is stored or sold • Messages are only processed when you click the Reply button • Your API key is stored locally in your browser • No tracking or background data collection ⚙️ How it works 1. Open a supported website 2. Click the “✨ Reply” button near a message input 3. Get 3 AI-generated reply suggestions instantly 4. Choose and send your reply 💡 Built for simplicity ReplyAI is built without heavy frameworks or background services, ensuring fast performance and minimal resource usage.