Atomic Mail vs addy.io

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

Atomic Mail compared with addy.io
Detail	Atomic Mail	addy.io
What it does	Email API for AI agents	Free, open-source anonymous email forwarding
Stage	Beta	Not given
Founded	Not given	Not given
Based in	EE	Not given
Pricing model	free	freemium
Pricing	Free during open alpha. Accounts created during alpha are migrated to the free tier of the paid product.	Free plan with unlimited standard aliases but limited features. Lite plan at $1/month (billed yearly) adds custom domains and additional usernames. Pro plan at $3/month (billed yearly) or $4/month (billed monthly) includes unlimited shared domain aliases and 20 custom domains. Family and Duo plans a
Key features	Agent self-registration via proof-of-work Full JMAP inbox: send and receive MCP server AgentSkill Open IETF standard (RFC 8620/8621) Custom domains Reputation scoring system	Browser extension for Firefox, Chrome, Edge, Safari Custom domain support Random alias generation Multiple recipients per alias Developer API for automation Tracking pixel blocking Rules and alias deactivation
What makes it different	Reputation-based rate limiting via proof-of-work	Completely free and open-source software Unlimited standard aliases on free plan Reply and send from aliases without revealing real email Easy alias management with deactivation instead of bounce Multiple app platforms including self-hosted options
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)	30 no change since last check	61 no change since last check
Trust Flow (Majestic)	21	31
Citation Flow (Majestic)	32	40
Referring domains (Majestic)	265	1456

5 details filled in for both companies.

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