What it sells
communication for agents
Business model breakdown
Buyer: who owns the budget?
UnverifiedDevelopers and teams building AI agents that need email.
Trigger: what makes them buy now?
Agents need to reach people and other agents without running a mail server or putting SMTP credentials in context.
Workflow: what inputs become what output?
One HTTP call to send/receive mail as signed JSON, managed *.primitive.email addresses running a JS Function on each inbound message, and a 'chat' verb that returns the threaded reply.
Economics: what it saves and how it charges
UnverifiedUsage-based credits (docs mention agent funding and credits); price not read.
Distribution: how it reaches customers
Self-serve signup, REST API, SDKs, CLI, MCP server and Claude/ChatGPT connectors; docs-led.
Funding history and coverage
| Round date | Stage | Amount | Investors | Source |
|---|---|---|---|---|
| — | Y Combinator Spring 2026 | — | Y Combinator | ycombinator.com |
Profiles summarize public reporting and company websites. Business-model notes are MaxBC's reading of that material, not confirmed facts; unknowns are left blank rather than guessed. Updated 2026-10-12.