Liquid
Safe template language created by Shopify.
Liquid is an open-source template language created by Shopify and used in Shopify themes, Jekyll, and many hosted applications. Its main fit for email is safe user-editable templates, stored templates, and commerce-style dynamic content.
At an early stage the deciding factors are what the free tier actually covers, what the first paid invoice looks like, and how much of a founding engineer's week the setup costs. Feature depth that only matters at a million sends a month is noise until it is not.
Against a waitlist, a launch announcement, onboarding email, and the first transactional sends, Liquid covers developer experience and SDK breadth, and does not cover scheduling and webhook coverage. Whether that gap matters depends on how central those are to the build.
- Free tier: Free, MIT-licensed
- Best published rate per 1,000: Tiers not published in comparable form
- Starts at: Free
- DX score: 7/10
- Deliverability: Not applicable; template language only.
- Operating since: Not published
- Scheduling: No
- SDKs: ruby
- Webhooks: No
Not applicable; template language only.
Products that need safe, user-editable email templates or Shopify-adjacent personalization.
Teams that want a full responsive email design system out of the box.
- › Designed for safe customer-facing template editing
- › Strong fit for stored templates and ecommerce-style personalization
- › MIT-licensed and well documented
- › No email layout framework or rendering compatibility layer by itself
- › Many real-world Liquid variants differ from core Liquid behavior
- › Ruby-first official implementation may not match every stack preference
Features at a glance
| API | No |
| SMTP | No |
| SDKs | ruby |
| Webhooks | No |
| Templates | basic |
| 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 |