MJML
Markup language for responsive email.
MJML is a markup language that compiles to table-based HTML that renders consistently in Outlook and Gmail. Vendor-neutral, broad framework integrations including mjml-react.
Judged purely as an API. What the request contract guarantees on retry, how complete the webhook event coverage is, whether suppressions are readable and writable programmatically, and how much the message log retains when something needs debugging in production.
Against high-frequency programmatic sends where a missed delivery is a product failure, MJML covers none of the capabilities this audience leans on (idempotency keys, webhook coverage, event stream, the suppressions API, batch sending, and SDK breadth), so it fits only where those needs are genuinely absent.
- Idempotency keys: No
- Webhooks: No
- Event stream: No
- Operating since: Not published
- Suppressions API: No
- Best published rate per 1,000: Tiers not published in comparable form
- Batch sending: No
- SDKs: None
- Deliverability: Not applicable.
Not applicable.
Polyglot teams needing a vendor-neutral template language.
- › Mature, language-agnostic
- › Excellent rendering across clients
- › XML-style syntax can feel verbose
Features at a glance
| API | No |
| SMTP | No |
| SDKs | None |
| Webhooks | No |
| Templates | rich |
| React Email | No |
| Batch send | No |
| Scheduled send | No |
| Suppressions | No |
| Multi-tenant | No |
| Inbound parsing | No |
| Event stream | No |
| Idempotency keys | No |
| Dedicated IP | No |