MJML vs Unitpost
MJML
mjml.io
Unitpost
unitpost.comSide by side
| Figure | MJML | Unitpost |
|---|---|---|
| Price from | Free | $30/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 3 | 5 |
| Spec score · Email Design Software | 8.6 (#7) | 7.7 (#29) |
| Spec score · Email Template Software | 8.7 (#6) | 7.7 (#16) |
| Integrations | The documented ecosystem includes Mailjet, Parcel, IntelliJ IDEA, Gradle, Neos CMS, and Easy-email. | The site lists SDKs for Node.js, Python, Ruby, PHP, Laravel, Go, Rust, Java, and .NET, along with a REST API and SMTP relay. |
| Security | MJML ignores includes by default and restricts enabled include paths to approved roots with canonical boundary checks. | The privacy policy lists encryption in transit and at rest, managed-key encryption for sensitive credentials, hashed API keys, signed webhooks, rate limiting, and access controls. |
| Support | MJML invites users to contact [email protected] and participate through Slack and GitHub. | The Enterprise plan includes dedicated support, and the privacy policy identifies Intercom as the in-app and website support messaging subprocessor. |
Plans
Unitpost
- FreeFree
- FreeFree
- Starter$30 a month
- Growth$200 a month
- EnterprisePriced 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.
Unitpost
Unitpost provides transactional and marketing email infrastructure through a visual editor, code or an AI agent. Users can build templates visually or in TSX, personalize them with typed variables and fallbacks, preview them, and send test messages to an inbox. Contacts support custom fields and segments, while opt-outs, bounces and complaints are automatically suppressed. Analytics list delivery rates, opens, clicks and an event timeline. Unitpost offers SDKs for Node.js, Python, Ruby, PHP, Laravel, Go, Rust, Java and.NET, plus a REST API and SMTP relay. Webhooks are HMAC-signed and retried until acknowledged, and inbound email can be parsed into customer workflows. It describes DKIM, SPF and DMARC authentication, suppression, idempotency and rate limits as deliverability measures. Free includes 5,000 emails per month and 200 per day; sending stops at the monthly quota or daily cap. Starter costs $30 a month and Growth costs $200 a month. Enterprise pricing is custom. The site positions its plans for side projects through high-volume or custom-term senders.