This AI agent for sending emails through WhatsApp voice notes using Twilio, Sendgrid, .NET integrates speech recognition and enhancement using AssemblyAI and OpenAI to convert voice messages into professional emails. The system uses a .NET framework to handle HTTP requests and controllers, with services such as transcription, content enhancement, and email sending integrated using Twilio's API, OpenAI's chat-based API, SendGrid for delivery, and AssemblyAI for speech-to-text conversion. The application is built using ASP.NET Core and follows the Minimal API approach, with Swagger integration for API documentation and CORS configuration for testing from different front-end clients. To test the application, ngrok is used to expose the local server to the internet, and Twilio's WhatsApp Webhook is configured to process incoming messages in real-time. The system can be applied to various use cases such as AI for the visually impaired, CRM business integration, automated response systems, and multi-language support.