In simple English
Coding emails by hand is painful because old email apps break modern designs. This tool lets you write clean, simple tags instead of complex tables. It turns your simple tags into standard email code that looks great everywhere. It is free to use and runs on your computer or through code. You can also use their free website to build emails without installing anything.
What it is
MJML is an open-source framework that translates a custom markup language into responsive email HTML. It uses a component library to handle layouts, text, and buttons so you do not have to write raw HTML tables.
What it is good for
Any solo builder who sends marketing emails, newsletters, or customer receipts and wants them to look correct on both phones and desktop computers without spending days fighting layout bugs.
- Saves hours of testing layouts in different email apps.
- Uses clean tags that are easy to read and edit.
- Includes a command-line tool and a Node.js library for automation.
- Requires learning a new tag system instead of standard HTML.
- Custom CSS styling beyond the built-in tags can still be tricky.
- Needs Node.js installed on your computer to run locally.
Writing complex HTML email tables by hand.
Visual Studio Code
- resend/react-email20k stars
Builds responsive emails using React components instead of a custom markup language.
- facebook/docusaurus67k stars
A static site generator from Meta that turns Markdown files into a documentation website.
- mkdocs/mkdocs23k stars
Turns a folder of Markdown files into a documentation website, controlled by one settings file.
- squidfunk/mkdocs-material28k stars
Turns a folder of Markdown files into a searchable documentation website, with every formerly sponsor-only feature now included.
npm install mjml