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Comparison

MJML vs Designmodo Postcards

MJML

mjml.io

Worth it
Confidence: Medium

Free, open-source framework that turns simple markup into responsive HTML email . a clear win if your team codes.

Read the full report

Pick MJML when

  • Dev teams hand-coding responsive emails
  • SaaS products rendering emails via API
  • Agencies producing many custom templates
  • Cost-conscious teams avoiding builder SaaS fees

When MJML is not a fit

  • Non-technical marketers wanting drag-and-drop
  • Teams needing vendor SLAs or paid support
  • Regulated orgs needing rapid security patches
  • One-off senders . use your ESP's built-in editor

Sources

  1. MJML . The Responsive Email Frameworkmjml.io
    official
  2. mjmlio/mjml on GitHubgithub.com
    official
  3. MJML API . Responsive Email as a Servicemjml.io
    official
  4. MJML Reviews . G2g2.com
    review
  5. The pros and cons of MJML (2026 version) . Scaleroscalero.io
    review
  6. Email Designers . Zurb Foundations or MJML? . Redditreddit.com
    review
  7. Directory Traversal in mjml-core . Snyksecurity.snyk.io
    security
  8. CVE-2025-67898 / CVE-2020-12827 unfixed . GitHub issuegithub.com
    security
  9. CVE-2024-26151 Detail . NVDnvd.nist.gov
    security
  10. Mailjet's MJML Launches . VentureBeatventurebeat.com
    news
  11. Companies that use MJML (326) . TheirStacktheirstack.com
    news
  12. How we Simplified Our Email Design Workflow With MJML . Cowrywiseinside.cowrywise.com
    news