MachineMail
MachineMail is an email API that gives AI agents their own free inboxes, with a trust report on every inbound message to
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About MachineMail
From the product's websiteAgents create real inboxes via one API call or MCP, wait for messages like OTP codes, read, reply and send. Every inbound message is checked (SPF/DKIM/DMARC, sender history, hidden text, classifier) and returned as agent-safe text with one of five trust levels; suspicious mail is quarantined and withheld. Agents can even self-register via auth.md and be claimed by a human with a 6-digit code. Agents need real email addresses for sign-ups and OTPs, but an inbox is an open door where anyone can inject instructions the agent will follow. Built for: Developers building AI agents (Claude Code, Cursor, Codex, OpenCode users) and AI startups running agents in production. Main features: Free unlimited inboxes on every plan; Trust report and level on every inbound message; Agent-safe text with hidden text and zero-width chars removed; Quarantine for prompt-injection mail; Hosted MCP server with wait_for_message; AgentMail-compatible /v0 REST API.
This is what MachineMail's page looks like claimed
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- Features, use cases and FAQ, marked up for search
- Pricing, free trial and launch offer
- Founder bio, maker comment and interview story
- Visitors' questions sent to you, with their email
- A permanent dofollow link from a DR 35 site
