ThunderAI

ThunderAI is a Thunderbird Addon that uses the capabilities of ChatGPT to enhance email management. It enables users to analyze, write, correct, and optimize their emails, facilitating more effective and professional communication. ThunderAI becomes a great tool for anyone looking to improve their email quality, both in content and grammar, making the writing process quicker and more intuitive. There is no need for an API key and is possibile to use this extension even with a free account! More info on the homepage: https://micz.it/thunderdbird-addon-thunderai/
Thanks to:

chatgpt.js for providing methods to interact with the ChatGTP frontend.
Aify for inspiration and certains methods to process the text from ChatGPT.

The specific references are described in the corresponding source files.