ChatGPT Writer is a free Chrome extension that uses AI to generate entire emails and messages. It supports all sites and works on all Chromium-based browsers, and offers enhanced support for Gmail. The tool is available in all languages and has over 200,000 users. It is 100% free, privacy-friendly, and offers high-quality responses that outcompete other similar tools in the market. To use it, users need to install the extension, click on the extension icon, and generate a response by briefly entering the topic. The tool requires users to create a free account on chat.openai.com. It also provides a personalized email reply that is generated using AI.