# mjmlio/mjml

MJML: the only framework that makes responsive email easy

Repository: https://github.com/mjmlio/mjml
Canonical: https://ross.abutalabs.com/products/mjml
Homepage: https://mjml.io
Language: JavaScript
License: MIT
License Family: permissive
Topics: mjml, email, email-boilerplate, responsive-email, email-campaigns, responsive
Last push: 2026-08-17T11:50:39+00:00

## Health v2 (maintenance only)
Score: 96/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 90, longevity 100
- inputs: {"age_days": 3870, "days_push": 16, "days_rel": 65, "gap_med": 6.0, "n_releases_24m": 17}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 18211, forks 997 (observed 2026-08-28T04:11:26.446384+00:00)

## What it is
MJML is a markup language and open-source engine that compiles semantic, component-based markup into responsive HTML email that renders reliably across email clients, including Outlook. It is available as an npm package with a CLI, a Node.js API, and an online editor.

## Use cases
- build responsive HTML emails without hand-coding table layouts
- generate email templates that work in Outlook and Gmail
- compile MJML files to HTML from the command line
- create reusable email components for marketing campaigns
- integrate email template rendering into a Node.js build pipeline

## When to choose
- you need responsive emails that render consistently across many email clients
- you want a component-based, semantic syntax instead of nested HTML tables
- you want a mature, widely adopted tool with CLI, Node.js API, and editor plugins

## When to avoid
- you only need plain-text emails
- you need pixel-perfect custom HTML beyond what the component library supports
- your stack has no Node.js or JavaScript tooling and no community port fits

## Facets
- artifact type: framework
- maturity: stable
- function: templating, cli, developer-tools
- domain: email, web-development, frontend
- platform: cli, cross-platform
- tags: responsive-email, email-templates, markup-language, html-email, email-campaigns, nodejs

## Member repositories
- mjmlio/mjml (main) score 96

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:26.446384+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:02:07.110262+00:00, confidence not recorded.
  - readme: https://github.com/mjmlio/mjml (fetched 2026-08-28T04:11:26.446384+00:00, sha b7c9f51948d9)
  - homepage: https://mjml.io (fetched 2026-08-29T08:00:29.601925+00:00, sha da2c66206fea)
  - site_page: https://mjml.io/getting-started-onboard (fetched 2026-08-29T08:00:29.604839+00:00, sha b16c9a0cda56)
  - site_page: https://documentation.mjml.io (fetched 2026-08-29T08:00:29.607027+00:00, sha 328fa337e21d)
  - site_page: https://mjml.io/about (fetched 2026-08-29T08:00:29.613060+00:00, sha 474851f39524)
  - registry_npm: https://registry.npmjs.org/mjml (fetched 2026-08-29T08:00:29.614856+00:00, sha ed10abb259a2)
  - site_page: https://mjml.io/faq (fetched 2026-08-29T08:00:29.610879+00:00, sha bbd88c386569)
- Data as of 2026-08-30T08:39:29.467469+00:00.