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Unitpost
Wilmington, Delaware, United States
What it is
Unitpost provides transactional and marketing email infrastructure through a visual editor, code, or an AI agent. Users can create templates visually or in TSX, personalize them with typed variables and fallbacks, preview messages, and send test emails to a real inbox. Contact tools include custom fields and segments; opt-outs, bounces, and complaints are automatically suppressed. Analytics include delivery rates, opens, clicks, and an event timeline. Developers can use SDKs for Node.js, Python, Ruby, PHP, Laravel, Go, Rust, Java, and .NET, as well as a REST API or SMTP relay. Webhooks are HMAC-signed and retried until acknowledged, and inbound email can be parsed into customer workflows. Unitpost describes DKIM, SPF, DMARC, suppression, idempotency, and rate limits as deliverability measures. The Free plan includes 5,000 emails per month and 200 per day, with sending stopping at either cap. Starter costs $30 a month and Growth costs $200 a month; Enterprise pricing is custom.
For and against
For
- Templates can be built visually or in TSX.
- Supports typed variables and fallbacks.
- Includes contact segmentation and suppression.
- Offers multiple SDKs, a REST API, and SMTP relay.
- Inbound email can feed customer workflows.
Against
- Free sending stops at monthly or daily caps.
- Starter costs $30 a month.
- Growth costs $200 a month.
- Enterprise pricing is custom.
The verdict
Unitpost combines email creation, contact handling, analytics, and developer integrations. The Free plan has daily and monthly sending caps, while paid plans start at $30 a month.
Who it suits
Unitpost suits teams building transactional or marketing email into applications, including developers using its SDKs, API, or SMTP relay. Its plan descriptions range from side projects to large senders with custom requirements.
Plans and prices
Free
5k emails / mo · 200 emails / day · 10k contacts · 5 domains
Read 30 Sep 2026 · unitpost.com
Starter
50k emails shown on plan card; comparison table says ~20k–125k emails · 10 domains · 3 team seats · 5 webhooks
Read 30 Sep 2026 · unitpost.com
Growth
250k emails shown on plan card; comparison table says ~250k–1M emails · 100 domains · 10 team seats · 25 webhooks
Read 30 Sep 2026 · unitpost.com
Enterprise
Custom rates · custom limits · dedicated support · annual invoicing & ACH
Read 30 Sep 2026 · unitpost.com
On the record
- AI integrations
- The hosted MCP server is presented for use with Cursor, Claude Code, GitHub Copilot, Gemini CLI, Windsurf, OpenCode, and Grok.unitpost.com · read 30 Sep 2026
- Analytics
- The product lists delivery rates, open tracking, click tracking, and an event timeline.unitpost.com · read 30 Sep 2026
- Audience
- The site positions Free for side projects, Starter for production apps, Growth for scaling teams, and Enterprise for senders sending 1M+ or needing custom terms.unitpost.com · read 30 Sep 2026
- Company
- The site identifies Work Reactor Inc. as the company operating Unitpost and lists an address in Wilmington, Delaware.unitpost.com · read 30 Sep 2026
- Contacts and consent
- Contacts support custom fields and segments, while opt-outs, bounces, and complaints are automatically suppressed.unitpost.com · read 30 Sep 2026
- Data handling
- Unitpost says it acts as processor for recipient and message data, processes that data to provide the service, and does not sell it.unitpost.com · read 30 Sep 2026
- Deliverability
- Unitpost describes DKIM, SPF, and DMARC domain authentication, automatic suppression, idempotency, and rate limits as deliverability measures.unitpost.com · read 30 Sep 2026
- Email design
- Users can build templates visually or in TSX, personalize them with typed variables and fallbacks, preview them, and send tests to a real inbox.unitpost.com · read 30 Sep 2026
- Integrations
- The site lists SDKs for Node.js, Python, Ruby, PHP, Laravel, Go, Rust, Java, and .NET, along with a REST API and SMTP relay.unitpost.com · read 30 Sep 2026
- Plan limits
- The Free plan stops sending at its monthly quota or daily cap; paid plans allow overage sending up to twice the monthly allowance, after which sending pauses.unitpost.com · read 30 Sep 2026
- Product
- Unitpost provides transactional and marketing email infrastructure through an editor, code, or AI agent.unitpost.com · read 30 Sep 2026
- Security
- 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.unitpost.com · read 30 Sep 2026
- Support
- The Enterprise plan includes dedicated support, and the privacy policy identifies Intercom as the in-app and website support messaging subprocessor.unitpost.com · read 30 Sep 2026
- Webhooks and inbound
- Webhooks are HMAC-signed and retried until acknowledged, and inbound email can be parsed into customer workflows.unitpost.com · read 30 Sep 2026
