AI code review for coding agents using four frontier models in debate
Physical mailing address and postal mail API for AI agents
Stage
MVP
Not given
Founded
2026
Not given
Based in
Not given
US
Pricing model
Freemium
Freemium
Pricing
Not given
Outbound mail: $0/month base, USPS First-Class Mail (1-page letter) $2.00, USPS Priority Mail flat-rate envelope $15.00, USPS Certified Mail $20.00, Certified with Electronic Return Receipt $24.00. Printing: B&W $0.40/page, Color $0.70/page. Mailing address for AI agent: $15/month, includes 30 stand
Key features
Deliberate for open design decisions before code exists
Audit to stress-test drafted work before shipping
Local review gates that block risky writes and commits
Bring your own API keys or models
Works across eight certified agent surfaces
Setup in under a minute with npx command
Send outbound mail via API, MCP, or dashboard
Certified mail with proof of delivery
Inbound mail scanning and OCR
REST API and MCP server integration
Webhook notifications with HMAC-SHA256 signing
Batch mail and postcards from templates
Human-in-the-loop approval gates for mail
Multi-channel notifications via email, SMS, Slack, Discord
Fulfillment photos and tracking for all mail
What makes it different
Four frontier models debate instead of single-model review avoiding blind spots
All gate code and tools are open source and MIT-licensed
Never trains on user code or content
Pay-per-call pricing with no token markup or per-seat fees
Real physical street address for autonomous agents to receive mail and packages
Seamless API integration with AI agent frameworks like OpenClaw, Hermes, LangChain
Inbound mail becomes structured agentic context via OCR and webhooks
Complete tracking from document submission through delivery confirmation
No credit card required to start using the service
mailbox.bot