StopReg vs Meterdoor

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

StopReg compared with Meterdoor
Detail	StopReg	Meterdoor
What it does	Real-time email intelligence API to detect disposable, fake, and risky email addresses	Express middleware for accepting payments in euros from humans via Stripe and USDC from AI agents via x402 on a single endpoint
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	DE
Pricing model	Freemium	Freemium
Pricing	Free: 200 requests/month. Launch: $20/month (60,000 requests). Scale: $50/month (200,000 requests). Boost: $100/month (500,000 requests). Power: $200/month (1,200,000 requests). Elite: $400/month (2,800,000 requests). Enterprise: Custom requests/month.	Free core under Apache 2.0 license with both payment methods and Express integration. Pro Early Bird: 49 € including 19% VAT, one-time fee for 1 project, then 79 € (includes quotas, CSV payment log, webhook reconciliation, 12 months updates and support, delivery within 3 weeks or full refund). Team:
Key features	Disposable email detection with auto-updated database Role-based email detection (admin, support, info, sales addresses) Public email provider detection (Gmail, Yahoo, Outlook) Email syntax validation MX record verification Email forwarding and alias service detection Domain management and custom enforcement policies Real-time API validation with sub-300ms response times Two API endpoints: full email validation and domain-only privacy-first Web dashboard for manual checks and monitoring	Single endpoint accepts both euro payments via Stripe and USDC payments via x402 Time-limited access model for human users paying in euros Per-request billing for AI agents using USDC on x402 Cryptographic payment verification without holding funds Local demo mode without accounts or real payments Open source core under Apache 2.0 license Works with Base Sepolia testnet and Stripe test mode
What makes it different	Privacy-first domain-only validation option for regulated environments and GDPR compliance Continuously updated disposable domain database with automated discovery and behavioral analysis High-precision detection optimizing for low false positives over volume Sub-second response times built for production scale and enterprise reliability	Unified payment solution for both human users and AI agents from a single endpoint Funds go directly to your accounts; Meterdoor never touches the money Open source core provides transparency and no ongoing licensing costs Ready for production with AI agents despite their current low payment volume Local testing without creating accounts or handling real money
Community votes	0	0
DR (Domain Rating by Ahrefs)	7 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	7	0
Citation Flow (Majestic)	26	0
Referring domains (Majestic)	29	0

5 details filled in for both companies.

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