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Kohnex Brain vs mailbox.bot

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Kohnex Brain compared with mailbox.bot
DetailKohnex Brain logo Kohnex Brainmailbox.bot logo mailbox.bot
What it doesExpert reasoning for the AI you already use Physical mailing address and postal mail API for AI agents
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelPaid Freemium
PricingPro: $29 per month (billed monthly) or $278.40 per year with 20% savings. Includes 3,000 queries per month, KB-DEEP and KB-CORE reasoning engines, all thinking modes, API key, and priority support. Custom plans available with negotiated query quota, dedicated support, and custom integrations. 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
  • Works with multiple AI models and clients (OpenAI, Claude, Cursor, VS Code, Gemini)
  • KB-DEEP and KB-CORE reasoning engines
  • All thinking modes included
  • MCP integration without workflow changes
  • API key for programmatic access
  • Priority and dedicated support options
  • Custom integrations for enterprise plans
  • 3,000 queries per month on Pro plan
  • 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
  • Enhances existing models without replacing them or requiring retraining
  • Single connection integrates with entire AI stack
  • Proven performance improvements on custom expert tasks
  • Generates sharper answers with fewer blind spots
  • Works with any compatible AI model without vendor lock-in
  • 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
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check22 no change since last check
Trust Flow (Majestic)01
Citation Flow (Majestic)1626
Referring domains (Majestic)376

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