M91 vs Agentboxd

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

M91 compared with Agentboxd
Detail	M91	Agentboxd
What it does	Human-in-the-loop approval for AI agents	Real email inboxes for AI agents with API, webhooks, and AI triage
Stage	Not given	MVP
Founded	Not given	Not given
Based in	Not given	GB
Pricing model	Free	Free
Pricing	Free forever with all features included	Free during public beta. Planned after beta: Builder $15/month, Team $60/month, Scale custom. Builder includes 25,000 emails/month, 100 inboxes, 25,000 AI triage calls/month. Team includes 150,000 emails/month, 1,000 inboxes, 150,000 AI triage calls/month. Overage pricing: $1 per 1,000 emails, $0.50
Key features	Alerts on iPhone and Android with answer buttons Phone call escalation for high and critical alerts Breaks through silent mode and Do Not Disturb Attachments and notes on every alert Broadcast to a channel with one person taking ownership See who acted and who ignored alerts Answer buttons set by you or your AI Callback webhooks to return answers to your code Setup via pasted prompt or API key-free send link Integration with AI frameworks, automation platforms and HTTP API	AI triage on every email with category, phishing, injection, and urgency scoring Inboxes with one API call on shared or custom domains Drafts with human approval before sending DKIM-signed sending with threaded replies Webhooks with HMAC-SHA256 signature verification Full-text search and long-poll wait endpoints Text extraction from attachments including OCR Sign in with Agentboxd for AI agent authentication
What makes it different	Full-volume alerts that interrupt even when phone is silenced No SDK, API key or card required to start Free forever with every feature for every team member Escalates to phone calls for critical alerts that go unanswered Works with existing AI agents, workflows and monitoring tools	AI processing is optional with privacy switch
Community votes	0	0
DR (Domain Rating by Ahrefs)	73 no change since last check	21 +4 (up) since last check
Trust Flow (Majestic)	1	5
Citation Flow (Majestic)	1	31
Referring domains (Majestic)	0	55

5 details filled in for both companies.

More alternatives to M91 More alternatives to Agentboxd