MJML (Mailjet Markup Language) is an open-source framework designed to reduce the complexity of creating responsive email designs. By leveraging its own markup language, MJML simplifies the process of coding reliable and responsive HTML emails that look great on various email clients and devices. The framework automatically takes care of translating the MJML you write into responsive HTML.The MJML project is supported by a comprehensive website at [http://mjml.io](http://mjml.io), where users can find extensive resources including documentation, a user community, and an interactive online editor. The website provides all the tools and guidance necessary for both novice and experienced developers to start creating beautifully formatted emails quickly and efficiently. Whether you're looking to learn MJML from scratch or seek advanced tips and templates, mjml.io is a valuable resource to developers aiming to enhance their email marketing campaigns with high-quality, responsive designs.