StopReg vs Spend Brake

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 Spend Brake
Detail	StopReg	Spend Brake
What it does	Real-time email intelligence API to detect disposable, fake, and risky email addresses	Hard dollar caps for every paid API your apps and agents call, enforced before the request leaves
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	BG
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 plan: $0, up to $50/month protected spend, 1 key, 1 provider, 10,000 requests/month, 20 agent sessions/month. Indie: $9/month, unlimited keys, 2 providers, 100,000 requests/month, 100 agent sessions/month. Team: $49/month, unlimited keys, 5 providers, 1,000,000 requests/month, 500 agent session
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	Session keys for AI agents with independent budgets Support for Google Maps, Twilio, Mapbox, HERE, Tavily, Exa, Brave and SerpApi Self-hosted option with Docker Compose and offline license verification
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	Atomic enforcement of all caps simultaneously so parallel requests cannot slip past together Provider keys never exposed to client applications, only revocable virtual keys
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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