
Maizzle
The modern framework for building HTML emails with Tailwind CSS and PostHTML.

The only framework that makes responsive email coding easy through semantic abstraction.

MJML (Mailjet Markup Language) is a high-level, component-based framework designed to solve the historical complexity of responsive email development. By 2026, MJML remains the industry standard for developers seeking to bypass the arcane 'table-hell' of legacy email client rendering. Its architecture uses a semantic syntax that the MJML engine transpiles into optimized, Outlook-compliant HTML. This process ensures consistent behavior across over 50+ email clients, including various versions of Microsoft Outlook, Gmail, and Apple Mail. The framework operates on a 'Responsive-by-Design' philosophy, where the engine automatically handles complex media queries and fluid layouts. Technically, MJML is built on React for the engine and offers a robust CLI, an online editor, and a standard library of UI components. Its market position is solidified by its extensibility, allowing teams to create custom enterprise-grade components that enforce brand consistency while reducing development time by up to 70% compared to raw HTML/CSS coding.
MJML (Mailjet Markup Language) is a high-level, component-based framework designed to solve the historical complexity of responsive email development.
Explore all tools that specialize in html transpilation. This domain focus ensures MJML delivers optimized results for this specific requirement.
Uses high-level tags like <mj-hero> and <mj-navbar> that replace hundreds of lines of nested HTML tables.
Engine automatically injects VML (Vector Markup Language) for background images and shapes in Outlook clients.
A sophisticated mathematical engine calculates column widths and gutters automatically based on the 'mj-column' attributes.
Allows developers to define their own MJML tags using JavaScript and React to build private design systems.
The framework includes a built-in validator that provides real-time linting for incorrect tags or attributes.
Transpilation process can minify the final HTML to stay under the 102KB Gmail clipping limit.
Support for mj-attributes allows global styling of tags, acting similarly to CSS classes but within the MJML spec.
Install the MJML engine via NPM using 'npm install mjml'.
Initialize a new project with an index.mjml file.
Define the <mjml> root tag to encapsulate the document.
Add the <mj-body> tag to contain the visible email content.
Utilize <mj-section> and <mj-column> to create a responsive grid structure.
Insert content components like <mj-text>, <mj-image>, or <mj-button>.
Run the transpiler via CLI: 'mjml input.mjml -o output.html'.
Preview the generated HTML in the browser to verify responsiveness.
Incorporate dynamic logic or templating variables (e.g., Handlebars) into the MJML before transpilation.
Export the final minified HTML to your Email Service Provider (ESP).
All Set
Ready to go
Verified feedback from other users.
"Highly praised for its simplicity and the elimination of table-based coding. Users love the CLI but some find the custom component API documentation dense."
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