MJML vs React Email: Markup Language vs Component Library

Two developer-focused approaches to email templates. Choose based on your stack.

TL;DR

MJML (Free) uses purpose-built email components with a simple markup language optimized for cross-client compatibility and rapid email template development. React Email (Free) lets React developers use familiar React components, TypeScript, and modern tooling for email templates with live preview and component reuse. Choose MJML for framework-light email markup; choose React Email when a React and TypeScript workflow is the stronger fit.

Quick Comparison

Feature	MJML	React Email
Syntax	XML-based markup	JSX/React
Price	Free	Free
Maturity	Established (2015)	Newer (2022)
TypeScript	Limited	Native
Learning Curve	New syntax	Familiar (if React)
Ecosystem	Large	Growing
Dev Server	Available	Hot reload

Overview

Both MJML and React Email solve the same problem: making HTML email development sane. They take different approaches. MJML uses custom XML-like markup. React Email uses React components. Both compile to cross-client compatible HTML.

MJML Approach

MJML provides a domain-specific markup language for emails. Components like mj-section, mj-column, and mj-button translate to reliable HTML structures.

<mjml>
  <mj-body>
    <mj-section>
      <mj-column>
        <mj-text font-size="18px">Welcome!</mj-text>
        <mj-button background-color="#007bff">
          Get Started
        </mj-button>
      </mj-column>
    </mj-section>
  </mj-body>
</mjml>

MJML has been around since 2015 (created by Mailjet). Documentation is extensive. The community is large. Tooling is mature. If something does not work, someone has probably solved it.

React Email Approach

React Email lets you write emails as React components. If your team already thinks in components and JSX, this feels natural.

import { Html, Text, Button } from '@react-email/components';

export default function WelcomeEmail({ name }) {
  return (
    <Html>
      <Text style={{ fontSize: '18px' }}>Welcome, {name}!</Text>
      <Button
        href="https://app.example.com"
        style={{ backgroundColor: '#007bff' }}
      >
        Get Started
      </Button>
    </Html>
  );
}

TypeScript support is built-in. The development server has hot reload. You can share logic between your app and emails. Testing is familiar if you test React components.

Choosing Based on Stack

If your app is React-based, React Email integrates naturally. Emails become part of your component library. Shared types, shared utilities, familiar patterns.

If you are not using React, MJML has the advantage. The syntax is simple regardless of your backend. Node.js, Python, Ruby, Go are all supported through the CLI or APIs.

Ecosystem and Tooling

MJML has a larger ecosystem. More IDE plugins, more starter templates, more community resources. The online editor is useful for quick experiments.

React Email is growing quickly. The team behind it (Resend) is actively developing. The component library is expanding. Expect the ecosystem to mature.

Rendering Quality

Both produce excellent cross-client HTML. MJML has more years of testing across edge cases. React Email handles the major clients well with occasional quirks in older Outlook versions.

For critical transactional emails, MJML's maturity provides slightly more confidence. For most use cases, both are production-ready.

The Verdict

Choose MJML if you want maximum maturity, language-agnostic tooling, or are not already invested in React. The ecosystem is proven.

Choose React Email if your stack is React-based and you want emails to feel like part of your application. The developer experience is excellent if you already know React.

From template to sending

Components solve authoring, not delivery. Rendered HTML from either framework still needs sending, automation, and subscription-aware lifecycle logic to become a program. Teams that outgrow piping templates into a bare API often consolidate on Sequenzy at $19/month: import the MJML or React Email output, then run onboarding, trial, dunning, and win-back sequences with native billing context — the layer neither framework attempts to be.

Try MJML Try React Email

Pricing deep-dive: questions worth asking beyond the sticker number

Sticker prices rarely tell the full story when two products bill for different units — contacts, seats, sends, exports, embeds, or workspaces. Treat pricing as a set of questions with observable answers about MJML, React Email, and any alternative you also consider. Screenshots from reviews go stale, so treat only the official pricing pages as current.

Pricing question	What to verify	Where
Pricing unit	What scale is counted in: contacts, profiles, sends, seats, or exports?	Check the current pricing page
Entry tier	What does the cheapest paid plan really include, and does a free tier exist?	Compare both free tiers side by side
Growth cliffs	At which volume does the bill roughly double, and which plan gates the feature you need?	Model cost at your two-quarter-ahead volume
Contract terms	How do annual versus monthly discount, refund, cancellation, and trial length compare?	Ask sales for the full terms list
Total stack cost	Editor + sending + QA + validation: which combination invoices lower each month?	Price the whole stack, not one tool
Extra charges	Which extras are billed separately: validation, dedicated IPs, embeds, workspaces, API overages?	Read the fine print on overage billing

Pricing and plan limits change frequently. Check both vendors' official pricing pages before a pilot and again before renewal.

How the two operating models differ in daily use

Features are easy to list; daily operation differs more. With MJML, ownership, escalation, and reporting usually settle in one place. With React Email, production may be split between separate systems, and a handoff step needs a named owner. Choose what your team can staff and audit.

Position FAQs about this matchup

Can we use both tools instead of choosing one?

Sometimes. Running both means paying twice and adding a handoff step that someone must own, version, and QA. Run one identical test journey through both products first, then compare the repair work each one demands.

Which one is cheaper at scale?

That depends on the pricing unit and your volume mix, so the answer changes with list size and seat count. Check the current official pricing pages for both vendors and model the cost at the volume you expect in two quarters, not the tier you are on today.

How do we make this decision defensible to leadership?

Pilot the same workflow in both products with identical entry, exit, suppression, and QA criteria, and collect written evidence from each run. A decision record like that survives staff changes far better than a feature checklist.