React Email 4.0

React Email 4.0 introduces several new features and enhancements, including a Linter, Spam Score, Compatibility Checker, Responsive Preview, and new components, aimed at improving the email development experience. The Linter tool analyzes links and images in emails for validity, security, and optimization, while the Spam Score uses SpamAssassin to assess the likelihood of an email being marked as spam. The Compatibility Checker assesses HTML/CSS support across major email clients, powered by the open-source project Can I Email. The Responsive Preview allows users to visualize emails on different device sizes, and eight new components, including Bento Grids and Pricing Tables, have been added for ease of use. React Email has seen a 56% increase in weekly npm downloads since its last major release, now boasting 422,541 downloads and 15,509 stars on GitHub, thanks to the contributions of 154 contributors. Users are encouraged to update their package to version 4.0.x and can refer to the React Email Changelog for more detailed information.