PostBrix vs Unitpost
PostBrix
postbrix.com
Unitpost
unitpost.comSide by side
| Figure | PostBrix | Unitpost |
|---|---|---|
| Price from | $9/mo | $30/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 8 | 5 |
| Spec score · Email Design Software | 8.5 (#8) | 7.7 (#29) |
| Spec score · Email Template Software | 8.6 (#7) | 7.7 (#16) |
| Headquarters | Madhya Pradesh, India | Wilmington, Delaware, United States |
| Integrations | Export guidance covers Mailchimp, SendGrid, Klaviyo, Brevo, HubSpot, Postmark, Customer.io, ActiveCampaign and Mailgun, plus Amazon SES compatibility on the homepage. | The site lists SDKs for Node.js, Python, Ruby, PHP, Laravel, Go, Rust, Java, and .NET, along with a REST API and SMTP relay. |
| Product | PostBrix is a browser-based email builder for creating responsive email templates and managing campaign-ready assets. | Unitpost provides transactional and marketing email infrastructure through an editor, code, or AI agent. |
| Support | Support is offered through [email protected], and the careers page identifies the operating location as Madhya Pradesh, India. | The Enterprise plan includes dedicated support, and the privacy policy identifies Intercom as the in-app and website support messaging subprocessor. |
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
Unitpost
- FreeFree
- FreeFree
- Starter$30 a month
- Growth$200 a month
- EnterprisePriced 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.
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.