Work Reactor Inc.
Work Reactor Inc., doing business as Unitpost, provides AI-agent-oriented messaging infrastructure for developers and product teams. Unitpost combines transactional and marketing email, SMS, templates, contacts, analytics, webhooks and agent-accessible workflows in one platform and sending balance.
At a Glance
- Developers and software product teams
- Startups and side projects
- SaaS companies
- E-commerce and online retailers
- +2 more
AI Tools by Work Reactor Inc.
(1)
Unitpost
Email and SMS API for Developers
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Latest News
Unitpost published on PeerPush as a developer-tools and email platform; MCP server and API documentation highlighted.
Unitpost launched on DevHunt as a tool for generating and sending production-ready emails.
Unitpost published guidance on email webhooks and migrating from SendGrid SMTP.
Unitpost published its email MCP-server explainer describing agent access, authentication and scopes.
Products & Services
Transactional and marketing email infrastructure with REST API, SMTP relay, templates, campaigns, contacts, tracking, inbound email, deliverability controls and event webhooks.
Paid-plan SMS messaging using the same balance and contact system as email, including two-way SMS, carrier registration, consent and suppression handling, STOP/HELP support and delivery events.
AI-assisted workflows with triggers, waits, branches and cross-channel actions; the official site labels automations as coming soon, while F6S describes them as in beta.
Hosted MCP access exposing Unitpost operations to AI clients, allowing agents to send mail, manage domains and audiences, and build workflows subject to credentials, scopes and approval controls.
Market Position
Unitpost positions itself as an AI-native, unified alternative to using separate transactional-email and marketing-email products: one audience, one sending balance, one API/UI/SDK/MCP surface, and approval-oriented agent workflows. Its own comparisons identify Resend, SendGrid, Postmark, Mailgun, Brevo and Loops as alternatives; it differentiates with combined transactional plus marketing messaging, visual/React templates, agent access and pay-for-sending rather than contact storage.
Leadership
Founders
Mike Vasilev
Founder and CEO of Unitpost; previously Senior AI Product Manager at ClickUp. F6S lists San Francisco as his location and Humber College computer-programming education.
Oleg Gekker
Co-founder and CTO of Unitpost; previously a Principal Software Engineer at Palo Alto Networks. F6S lists Oakland as his location and Donetsk National Technical University education.
Executive Team
Mike Vasilev
Founder and CEO
Previously Senior AI Product Manager at ClickUp.
Oleg Gekker
Co-founder and CTO
Previously Principal Software Engineer at Palo Alto Networks.
Founding Story
The founders describe building Unitpost because teams were maintaining separate tools for transactional email and marketing campaigns, causing contacts to drift and creating multiple bills. Their initial vision was one AI-native system with one contact list, one sending balance and the same actions available through the dashboard, API, SDKs and MCP, with human approval before messages go out.
Business Model
Revenue Model
Freemium, monthly sending-balance plans and usage-based overages. The monthly plan price is applied to email and SMS sending; paid plans include unlimited contacts, while enterprise customers can receive custom rates and terms.
Pricing Tiers
5,000 emails per month, 200 emails per day, 10,000 contacts and 5 domains.
20,000 emails, unlimited contacts, 10 domains, 3 team seats, 5 webhooks and 10 API keys; SMS is available on paid plans.
250,000 emails, 100 domains, 10 team seats, 25 webhooks and 50 API keys, plus priority deliverability.
For sending 1M+ emails or customers needing custom limits, dedicated support and annual invoicing/ACH.
Target Markets
- Developers and software product teams
- Startups and side projects
- SaaS companies
- E-commerce and online retailers
- Businesses needing transactional and lifecycle email
- Teams adopting AI agents for marketing or messaging operations
- Password resets, magic links and login alerts
- Receipts, invoices, order confirmations and shipping updates
- Welcome and onboarding sequences
- Newsletters and marketing campaigns
- Abandoned-cart reminders and win-back campaigns
- Failed-payment follow-up and trial-ending messages