Quail is a modern AI-driven newsletter service designed to help writers build a community of followers and fund their best creative work. It offers seamless integration beyond email, supports scientific and engineering writing with excellent formula and chart creation tools, and empowers users with unprecedented freedom through AI technology. Quail supports multiple editors like Obsidian, VScode, and VIM (coming soon), and provides a rich set of features such as Bower, Packs, Atom Feed, custom domains, collaboration, currency-friendly options, analytics, and data export. Quail's pricing is straightforward: it’s mostly free, with a 10% commission and transaction fee charged only when users start earning money.