A markup language and framework for creating responsive emails with a semantic syntax and standard components.
MJML is a markup language and framework specifically designed for creating responsive email templates. It solves the problem of coding complex, cross-client compatible emails by providing a semantic syntax and a library of standard components that compile into clean, responsive HTML. This eliminates the need for writing tedious HTML and CSS hacks typically required for email design.
Developers, designers, and marketers who need to create responsive email templates that work reliably across various email clients and devices.
Developers choose MJML because it dramatically reduces the time and effort required to build responsive emails, offering a declarative syntax and pre-built components that ensure consistency and compatibility without dealing with low-level HTML/CSS quirks.
MJML: the only framework that makes responsive-email easy
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Uses intuitive tags like <mj-section> and <mj-column> that make email structure straightforward, reducing the need for complex HTML/CSS hacks as highlighted in the philosophy.
Includes pre-built components such as buttons and text blocks, which speed up development and ensure consistency across emails, as mentioned in the key features.
Automatically generates HTML that adapts to different screen sizes and clients, ensuring emails look great on any device without manual tweaking.
Offers a CLI, Node.js library, browser version, and editor integrations like VS Code, making it accessible for various workflows as shown in the usage section.
Provides validation levels (strict, soft, skip) to ensure code quality and compatibility, helping catch errors early in development.
Requires Node.js installation for most use cases, which adds setup complexity and may not be feasible in all environments, as noted in the installation section.
While components are standard, customizing beyond the library's scope can be challenging, forcing workarounds or manual HTML/CSS edits.
Version migrations, like from MJML 3 to 4, require separate branches and updates, potentially disrupting existing projects as indicated in the README header.
Adopting MJML ties you to its syntax and tooling, making it harder to switch to other email frameworks without significant refactoring.