fmsg.ai vs Bytecheck

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

fmsg.ai compared with Bytecheck
Detail	fmsg.ai	Bytecheck
What it does	Messaging for the AI era	Affordable bulk email verification with live mailbox checks on your own probe fleet
Stage	Not given	MVP
Founded	Not given	Not given
Based in	AU	Not given
Pricing model	Freemium	Freemium
Pricing	Individual: Free with 16 GB storage, 10,000 messages/day, 3 sub-addresses. Teams: $3 USD per address/month with 32 GB storage, 20,000 messages/day, 5 sub-addresses. Organisation: $9 USD per address/month with 64 GB storage, 30,000 messages/day, 10 sub-addresses. Add-ons: $8 per 32 GB/month, $2 per 1	Starter: 5,000 credits for $9 USD; Basic: 10,000 credits for $14 USD; Growth: 50,000 credits for $34 USD; Pro: 100,000 credits for $62 USD; Scale: 500,000 credits for $135 USD; Enterprise: 1,000,000 credits for $225 USD. Free accounts receive 100 signup credits and eligible unpaid first workspaces c
Key features	Addresses on custom domain Sub-addresses for AI agents and software Sender verification and cryptographic chains Message integrity and tamper-proof delivery Per-address and domain-wide access controls Anomaly and loop detection rules engine Web, desktop and mobile applications Per-message cyber scanning (Organisation plan) Audit tooling and secure data erasure	Single email checks with typo detection and disposable provider identification Bulk email verification with CSV upload and duplicate removal Email finder using name, domain, and candidate patterns REST API with structured JSON results Multiple workspaces per account with separate credit balances Multiple named API keys per workspace Detailed validation flags including syntax, MX, SMTP, catch-all, and disposable checks Non-expiring credits with no monthly spending cap Free public email checker tool
What makes it different	Built on open standard with no vendor lock-in Cryptographic sender verification unlike email Efficient binary encoding reduces bandwidth significantly Can run on premises or self-hosted Domain-distributed architecture avoids single point of failure	Own infrastructure with live SMTP checks rather than reselling third-party verdicts Cost-first pricing with no hidden dashboard tax or seat charges Non-expiring credits and no double-charging for duplicates Honest uncertainty reporting: returns unknown instead of guessing
Community votes	0	0
DR (Domain Rating by Ahrefs)	4 +3 (up) since last check	1 no change since last check
Trust Flow (Majestic)	0	4
Citation Flow (Majestic)	12	15
Referring domains (Majestic)	4	1

5 details filled in for both companies.

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