MJML vs Stensul
MJML
mjml.ioStensul
stensul.comSide by side
| Figure | MJML | Stensul |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 3 | 4 |
| Spec score · Email Design Software | 8.6 (#7) | 6.7 (#50) |
| Spec score · Email Template Software | 8.7 (#6) | 6.7 (#25) |
| Integrations | The documented ecosystem includes Mailjet, Parcel, IntelliJ IDEA, Gradle, Neos CMS, and Easy-email. | Stensul offers one-click export to ESPs and MAPs including Salesforce, Adobe, and Oracle, plus integrations with DAM, workflow, and project-management tools. |
| Security controls | Documentation says includes are ignored by default and that enabled include paths are restricted to validated allowlisted roots with traversal and absolute-path checks. | The platform supports OAuth2/OIDC and SAML SSO, activity logging, HTTPS with TLS, and encryption at rest for working files and offsite backups. |
| Support | MJML invites users to contact [email protected] and participate through Slack and GitHub. | Every customer receives dedicated enterprise support, and all pricing packages include a dedicated Customer Success Manager and ongoing Platform Support. |
| What it does | MJML is a markup language and compiler that turns semantic email markup into responsive HTML using nested tables, inline CSS and client-specific workarounds. | Stensul is a governed platform for enterprise teams to create, review, and launch on-brand, compliant emails. |
Plans
Stensul
- BusinessPriced on request
- EnterprisePriced on request
- GrowthPriced on request
- TeamPriced on request
In their own words
MJML
MJML is a markup language for building responsive email layouts. Its engine converts MJML into email HTML made with nested tables and inline CSS, with responsive behavior for popular email clients, including Outlook. Reusable, extensible components provide a starting point, and users can create their own components. MJML is open source under the MIT license and free to use. Its online editor supports writing and rendering MJML, and its free REST API renders markup into responsive HTML. The command-line interface can compile files, watch for changes, and save generated HTML to a chosen file. Local installation is available through npm on macOS, Linux, and Windows; plugins are available for Visual Studio Code and Sublime Text, alongside a desktop app. API accounts receive an Application ID and two API keys, with public and secret keys intended for browser and back-end use. Includes are ignored by default, and enabled include paths are restricted to approved roots. Once the HTML is rendered, users must send it through an email service provider or directly from a shell. The mj-button component is not fully clickable because of email-client support.