Knak vs PostBrix
Knak
knak.comPostBrix
postbrix.comSide by side
| Figure | Knak | PostBrix |
|---|---|---|
| Price from | — | $9/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 1 | 8 |
| Spec score · Email Template Software | 7.4 (#21) | 8.6 (#7) |
| API | Knak lists custom integration and API options, including marketing automation, digital asset management, translation, and SCIM APIs. | The documented REST API uses https://api.postbrix.com/v1 with Bearer API-key authentication and endpoints for rendering templates, listing projects, fetching project AST data and health checks. |
| Headquarters | Ottawa, Ontario, Canada | Madhya Pradesh, India |
| Integrations | Knak lists integrations across marketing automation, email service, design, digital asset management, project management, collaboration, SSO, translation, and API categories. | Export guidance covers Mailchimp, SendGrid, Klaviyo, Brevo, HubSpot, Postmark, Customer.io, ActiveCampaign and Mailgun, plus Amazon SES compatibility on the homepage. |
| Product | Knak describes itself as an AI production layer for enterprise marketing that helps teams build on-brand campaigns between creative brief and send. | PostBrix is a browser-based email builder for creating responsive email templates and managing campaign-ready assets. |
| Support | Knak advertises dedicated support during setup and ongoing advice, and says teams can get up and running in days. | Support is offered through [email protected], and the careers page identifies the operating location as Madhya Pradesh, India. |
Plans
PostBrix
- FreeFree
- FreeFree
- Starter$9 a month
- Starter$9 a month
- Pro$29 a month
- Pro$29 a month
- EnterprisePriced on request
- Enterprise & AgencyPriced on request
In their own words
PostBrix
PostBrix is a browser-based email builder for producing responsive templates and organizing assets for campaigns. Its visual editor lets users arrange text, images, buttons, dividers, and columns without writing HTML. Layouts are designed for mobile and desktop, and saved headers, footers, and calls to action can be reused across projects. The product can help generate or refine email copy with AI, then export templates as MJML or fully inlined HTML for an existing workflow. PostBrix says its exported code works with services that accept HTML or MJML, including Mailchimp, HubSpot, SendGrid, Brevo, Postmark, Amazon SES, Klaviyo, Customer.io, ActiveCampaign, and Mailgun. The documentation also describes REST API rendering and key management, live previews, test emails, responsive checks, and rendering troubleshooting. A free plan and free trial are available; paid plans start at $9/mo. The free tier is limited to five monthly exports, five daily downloads, three daily test emails, and ten lifetime AI generations.