MJML

7.3easy start · #6 of 62
in Email Design Software

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you workyes

Runs on api, Browser, Linux, Mac, Web, Windows.

MJML is ranked #6 of 62 in email design software on The Geeks Club. It runs on API, Browser extension, Linux, macOS, Web, Windows. There is a free plan.

MJML plans and pricing

All plans

Free Free free-to-use REST API mjml.io · 30 Sept 2026

Compared on email design software

Free plan: Yes
Editor type: code-first
Reusable content blocks: Yes
HTML export: Yes
Custom code editing: Yes
Custom fonts: Yes

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The record

Purpose: MJML is a markup language designed to reduce the difficulty of coding responsive email.
Output: The MJML engine transpiles MJML markup into responsive email HTML with nested tables and inline CSS.
Responsive design: MJML is responsive by design on popular email clients, including Outlook.
Components: MJML provides reusable, extensible components and lets users build custom components.
Open source: MJML is open source under the MIT license.
Online editor: MJML provides a free online editor for writing and rendering MJML.
Local installation: MJML can be installed with npm on OSX, Linux, and Windows.
Command line: The CLI can compile files, watch for changes, and write generated HTML to a chosen file.
Editor plugins: MJML offers plugins for Visual Studio Code and Sublime Text, plus a desktop app.
API: The MJML REST API is free to use and renders MJML into responsive HTML.
API authentication: Each API account receives one Application ID and two API keys, with public and secret keys intended for browser and back-end use respectively.
Security: MJML ignores includes by default and restricts enabled include paths to approved roots with canonical boundary checks.
Integrations: The documented ecosystem includes Mailjet, Parcel, IntelliJ IDEA, Gradle, Neos CMS, and Easy-email.
Support: MJML invites users to contact [email protected] and participate through Slack and GitHub.
Price from: Free

Where it ranks on The Geeks Club

Best Email Design Software in 2026#6 of 62
Best Email Template Software in 2026#5 of 26

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Sources

documentation.mjml.io· checked 30 Sept 2026
mjml.io/about· checked 30 Sept 2026
mjml.io· checked 30 Sept 2026
mjml.io/faq· checked 30 Sept 2026
mjml.io/download· checked 30 Sept 2026
mjml.io/api· checked 30 Sept 2026
mjml.io/api/documentation/· checked 30 Sept 2026