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Unitpost

unitpost.com

From $30/mo Free plan WebAPI
Visit unitpost.com
Spec score 7.7 #29 of 63 in Email Design Software

What it is

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.

Spec sheet

Product
Unitpost provides transactional and marketing email infrastructure through an editor, code, or AI agent.Read 30 Sep 2026 · unitpost.com
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.Read 30 Sep 2026 · unitpost.com
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.Read 30 Sep 2026 · unitpost.com
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.Read 30 Sep 2026 · unitpost.com
Support
The Enterprise plan includes dedicated support, and the privacy policy identifies Intercom as the in-app and website support messaging subprocessor.Read 30 Sep 2026 · unitpost.com
Headquarters
Wilmington, Delaware, United StatesRead 28 Sep 2026 · unitpost.com
Company
The site identifies Work Reactor Inc. as the company operating Unitpost and lists an address in Wilmington, Delaware.Read 30 Sep 2026 · unitpost.com
AI integrations
The hosted MCP server is presented for use with Cursor, Claude Code, GitHub Copilot, Gemini CLI, Windsurf, OpenCode, and Grok.Read 30 Sep 2026 · unitpost.com
Analytics
The product lists delivery rates, open tracking, click tracking, and an event timeline.Read 30 Sep 2026 · unitpost.com
Contacts and consent
Contacts support custom fields and segments, while opt-outs, bounces, and complaints are automatically suppressed.Read 30 Sep 2026 · unitpost.com
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.Read 30 Sep 2026 · unitpost.com
Deliverability
Unitpost describes DKIM, SPF, and DMARC domain authentication, automatic suppression, idempotency, and rate limits as deliverability measures.Read 30 Sep 2026 · unitpost.com
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.Read 30 Sep 2026 · unitpost.com
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.Read 30 Sep 2026 · unitpost.com
Webhooks and inbound
Webhooks are HMAC-signed and retried until acknowledged, and inbound email can be parsed into customer workflows.Read 30 Sep 2026 · unitpost.com

Plans and prices

Free Free billed monthly 5,000 emails/month · 200 emails/day · 10,000 contacts · 5 domains · 2 webhook endpoints · 25 MB hosted image storage Read 20 Sep 2026 · unitpost.com
Free Free $0/ mo 5k emails / mo · 200 emails / day · 10k contacts · 5 domains · 2 webhook endpoints · 3 API keys · 7-day event history Read 30 Sep 2026 · unitpost.com
Starter $30 a month $30/ mo 50k emails shown on plan card; comparison table says ~20k–125k emails · 10 domains · 3 team seats · 5 webhooks · 10 API keys · no daily sending cap Read 30 Sep 2026 · unitpost.com
Growth $200 a month $200/ mo 250k emails shown on plan card; comparison table says ~250k–1M emails · 100 domains · 10 team seats · 25 webhooks · 50 API keys · priority deliverability Read 30 Sep 2026 · unitpost.com
Enterprise Priced on request Custom Custom rates · custom limits · dedicated support · annual invoicing & ACH Read 30 Sep 2026 · unitpost.com

Every Unitpost plan and price →

Strong points and limits

Strong points

  • Supports visual and TSX template creation
  • Lists SDKs for multiple programming languages
  • Signed webhooks retry until acknowledged
  • Inbound email can feed customer workflows

Limits

  • Free sending stops at monthly or daily limits
  • Starter costs $30 a month
  • Growth costs $200 a month
  • Enterprise pricing is custom

Who it suits

Unitpost may suit developers and teams sending transactional or marketing email who want APIs, SDKs or SMTP relay access. Its plan positioning ranges from side projects to senders needing custom terms.

Verdict

Unitpost combines email composition, delivery analytics and developer integrations, with contact suppression and inbound processing. The Free plan has both daily and monthly sending limits; paid plans allow larger stated allowances, with Enterprise terms custom.

Where Specifiction places it

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