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openagent.email vs Knostic

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

openagent.email compared with Knostic
Detailopenagent.email logo openagent.emailKnostic logo Knostic
What it doesSelf-hosted email and task handoffs for AI agents with no vendor control plane Control plane for agentic AI security on the endpoint
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelOpen source Freemium
PricingSelf-hosted is free under Apache-2.0 license (pay only for VPS infrastructure ~$5/month and domain ~$10/year). Hosted Pro Early Bird: $30.00/year one-time payment, no auto-renewal. Kirin: Free ($0/mo) for individual developers and small teams (1-5 users), Team plan at $15/mo per user for growing teams (5+ users), Enterprise plan with custom pricing. AgentMesh: Free ($0/mo) with 300 items per category, Premium at $15/mo per user, Pro at $850/mo per user for unlimited API access
Key features
  • MCP 2026-07-28 support for Claude, Cursor, Kimi Code and other clients
  • Unlimited agent mailboxes on your own domain
  • Email-backed agent-to-agent task threads with stamped states
  • Policy enforcement before agent execution
  • Blocks prompt injections and rogue agent actions
  • Real-time detection of malicious behavior
  • MCP server scanning and blocking
  • Shadow AI discovery across organization
  • Secrets detection and prevention
  • Skills and extensions vetting
  • Dangerous artifacts rejection
  • Support for Cursor, Claude Code, GitHub Copilot, Windsurf
  • Minute-level deployment
What makes it different
  • Apache-2.0 open source with no vendor control plane or per-inbox software fees
  • Mail stays on your server under your control unless you explicitly opt into external services
  • Built-in OTP extraction tested against real services from US and Chinese providers
  • Visibility into shadow AI across enterprise systems
  • Unified control plane for multiple coding agents and IDEs
  • Supply chain threat discovery before components run
  • Secure coding enforcement with threat modeling
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)4 −1 (down) since last check62 +1 (up) since last check
Trust Flow (Majestic)316
Citation Flow (Majestic)2640
Referring domains (Majestic)28810

5 details filled in for both companies.

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