MJML: the established markup framework for bulletproof email HTML
A markup language and compiler that turns semantic tags into bulletproof responsive email HTML, the most established open-source email framework with a deep template ecosystem.
The Mailing Room
An email framework that pairs Tailwind utility classes with an automated build pipeline, the best fit for teams already on Tailwind who want utility-class email authoring.
If your team already thinks in Tailwind utility classes for the rest of the product, learning a new markup DSL just to build an email is friction you do not need. Maizzle takes the opposite approach to MJML: instead of semantic custom tags, you write plain HTML styled with Tailwind's utility classes, and a build pipeline turns it into email-safe output.
Maizzle is the best fit on this shelf for a team already using Tailwind elsewhere, because the authoring model is the one your developers already know. There is no custom markup to learn, you write class="p-4 text-center" the way you would in any Tailwind project, and Maizzle's build step handles what email actually needs: it automatically inlines the CSS, purges unused classes so the output stays lean, and minifies the result for production. Scaffolding a new project is a single command.
Run npx maizzle new to scaffold a starter project, write your email templates as HTML with Tailwind classes, and run the build to get inlined, purged, minified email HTML ready for any sending provider. Under the hood it uses Vue templating for layouts and includes, worth knowing if you are digging into the build config.
The core Maizzle framework is free and open source, current release in the v6.x line, with a 2026 copyright footer showing Maizzle OÜ as the maintaining entity. Separately, the makers sell Mailviews, a paid pack of production-ready templates, but that is optional: the framework itself, npx maizzle new included, costs nothing and needs nothing else to run. Full docs at the link below.
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