Free Tool

Build Emails That Actually Render

A local-first MJML email builder with drag-and-drop layout, live preview, global styles, and export to HTML or MJML source. No signup required.

Open Email Builder See Features
MJML Email Builder editor showing canvas, components, and properties panel

Why This Builder Helps

🧩

Drag-and-Drop MJML Blocks

Build sections, columns, and content blocks with email-safe components.

📱

Desktop + Mobile Preview

Switch canvas width between 600px and 320px to sanity-check layouts.

🎨

Global Styles (mj-attributes)

Set typography, button, and section defaults once for consistent emails.

📤

Export HTML or MJML

Hand off clean MJML source or download compiled HTML for sending.

⚠️

Pre-flight Checks

Get warnings for Gmail clipping risk, missing alt text, and placeholder links.

🔐

Local-First Templates

Templates are saved in your browser (IndexedDB). Optional autosave included.

Key Features

Visual Builder With MJML Structure

Compose email-safe layouts by adding sections and columns, then dropping in text, buttons, images, spacers, and dividers.

  • Strict component nesting (email-friendly structure)
  • Properties panel for per-block attributes
  • Undo/redo for quick iteration
Editor canvas with components and properties panel

Global Styles + Preview Text

Define consistent typography and button styles via MJML head attributes, and set preview text for inbox snippets.

  • Global font + colors
  • Button defaults (radius, color, font)
  • Custom CSS injected into mj-style
Global styles panel showing typography and button defaults

Export With Pre-flight Checks

Export send-ready HTML (optionally minified), MJML source, or the JSON node tree for developer handoff.

  • Gmail 102KB clipping warning
  • Missing alt text + placeholder links warnings
  • Copy to clipboard or download file
Export modal showing format options and pre-flight checks

Common Questions

No. The tool runs in your browser and templates are stored locally.
MJML generates responsive, email-client-safe HTML (including Outlook-friendly markup) while keeping the source readable for developers.
Gmail clips emails over 102KB. The export screen warns when your compiled HTML is near or over that limit.
Yes. Export MJML source or the JSON node tree to integrate with your build pipeline or ESP.

Ready to Try MJML Email Builder?

Free to use. No signup required. Works right in your browser.

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