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openagent.email vs ActionBox

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 ActionBox
Detailopenagent.email logo openagent.emailActionBox logo ActionBox
What it doesSelf-hosted email and task handoffs for AI agents with no vendor control plane Human approval infrastructure for AI agents and automation workflows
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
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. Developer: Free forever with 250 Actions/month, 3 Sources, 3 Watches, 7-day history. Pro: $10/month ($120/year, save 17%) with 1,000 Actions/month, unlimited Sources, 20 Watches, 30-day history, additional Actions at $8 per 1,000-pack. Team: $49.17/month ($590/year, save 17%) with 5,000 Actions/mont
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
  • Typed decisions (Boolean, choice, text, number, rating, structured forms)
  • Heartbeat Watches for silent-work detection
  • Action Controls for safe follow-up operations
  • Multi-surface inboxes (web, mobile, Slack, CLI, MCP)
  • Model Context Protocol (MCP) integration
  • Signed receipts and durable decision history
  • Mobile app for iOS (15+) with push alerts
  • Slack approval integration (Beta)
  • CLI with bounded long-poll waiting
  • Integration guides for GitHub Actions, n8n, LangGraph, OpenAI Agents SDK
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
  • Durable decision records that survive client disconnections and restarts
  • Reduces median approval time significantly in production environments
  • Unified API across multiple approval surfaces without building custom dashboards
  • Source-scoped identity for independent credential rotation across runners
  • Built-in monitoring for stalled background work with heartbeat watches
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 check5 no change since last check
Trust Flow (Majestic)37
Citation Flow (Majestic)2624
Referring domains (Majestic)2842

5 details filled in for both companies.

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