openagent.email vs Harny

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 Harny
Detail	openagent.email	Harny
What it does	Self-hosted email and task handoffs for AI agents with no vendor control plane	Agent harness infrastructure that gives AI agents memory for each user, connected accounts, action limits and an audit record.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	CA
Pricing model	Open source	Freemium
Pricing	Self-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.	Free: first 500 monthly-active end users per month, free forever. Paid: $0.30 per monthly-active end user above 500, billed monthly.
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	Timestamped memory ingestion with backdating capability Per-user data isolation and privacy scoping Ranked memory recall with dated evidence Connected accounts integration per user Long-running agent jobs with folder-level operations Configurable token ceiling per API call Enforced action limits on agent operations Complete action audit trail with hash chaining MCP server integration for Claude and other clients
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	Highest published BEAM benchmark score at 128K tokens: 85.1, compared to competing memory systems 98% fewer tokens required than raw tool output, making responses 4× cheaper Works with 20+ agent frameworks including LangChain, LangGraph and LlamaIndex First 500 monthly-active end users free forever Per-person billing model scales with user growth, not API calls
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	4 −1 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	26	0
Referring domains (Majestic)	28	1

5 details filled in for both companies.

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