Email and SMS for developers and their agents.

Work Reactor Inc.

Delaware corporation, operating as Unitpost

2055 Limestone Road STE 200-CWilmington, DE 19808United States

Why Unitpost

What we do differently.

One list for email and SMS

Receipts, campaigns and texts share contacts and one API key.

Contacts

Built for AI agents

A hosted MCP server, a CLI and nine official SDKs.

MCP server

Your reputation, guarded

Hard bounces are suppressed. A bad campaign pauses itself.

Deliverability

Priced by sending

Unlimited contacts on paid plans, with marketing included.

Pricing