Use the Maizzle API to compile a string to an HTML email.


First, require() the framework in your application:

const Maizzle = require('@maizzle/framework')

Then, call the render() method, passing it a string and an options object:

const Maizzle = require('@maizzle/framework')

  .render(`html string`, options)
  .then(({html, config}) => console.log(html, config))

The render() method returns an object containing the compiled HTML and the environment config that was computed for it.


options is an object with the following structure:

  tailwind: {
    config: {},
    css: '',
    compiled: '',
  maizzle: {},
  beforeRender() {},
  afterRender() {},
  afterTransformers() {},


Pass in a custom Tailwind CSS configuration, or a pre-compiled CSS string.

configObjectundefinedA Tailwind CSS config object.
cssString@tailwind components; @tailwind utilities;A CSS string. Will be compiled with Tailwind CSS, so it may use PostCSS syntax. To use Tailwind, it needs to include at least @tailwind utilities
compiledStringundefinedA pre-compiled CSS string, to use as-is. This will skip Tailwind compilation, resulting in faster render speed.


The Maizzle Environment configuration object.

Object{}A Maizzle config object.


const Maizzle = require('@maizzle/framework')

const html = `---
title: Using Maizzle on the server

<!DOCTYPE html>
    <style>{{{ page.css }}}</style>
        <td class="button">
          <a href="https://maizzle.com">Confirm email address</a>

    tailwind: {
      config: require('./tailwind.config.js'),
      css: `
        .button { @apply rounded text-center bg-blue-500 text-white; }
        .button:hover { @apply bg-blue-700; }
        .button a { @apply inline-block py-4 px-6 text-sm font-semibold no-underline text-white; }
    maizzle: require('./config.js')
).then(({html}) => console.log(html)).catch(error => console.log(error))


Of course, templating tags are available when using Maizzle programmatically.

const html = `---
title: Using Maizzle programmatically

<extends src="src/layouts/main.html">
  <block name="template">
    <!-- your HTML -->


Since the config you can pass to the render() method is optional, there are a few gotchas that you need to be aware of.

Default Tailwind

If you don't specify a Tailwind config object, Maizzle will try to compile Tailwind using tailwind.config.js at your current path.

If the file is not found, Tailwind will be compiled with its default config.

The default config is not optimized for HTML email: it uses units like rem and CSS properties that are used for web design and which have little to no support in the majority of email clients.

Also, the default Tailwind config will not include any content paths that should be scanned for generating utility classes.


Transformers, such as CSS inlining or minification, are opt-in: they transform content only when you enable them. Since you don't need to pass in a Maizzle config object, this means that most of them will not run.

The following Transformers always run:

  • Markdown (can be disabled)
  • Prevent Widows
  • Remove Attributes - removes empty style attributes by default
  • Filters - supports <style tailwindcss|postcss> tags and provides various text filters

CSS Output

The string to be compiled with render() must include {{{ page.css }}} in a <style> tag inside the <head>, otherwise no CSS will be output or inlined:

<!DOCTYPE html>
+      <style>{{{ page.css }}}</style>
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