CleanSignUps
Real-time API and tools to verify emails and block disposable, temporary and fake addresses at signup
Launch screenshots from Product Hunt, Jul 2026
The product is a real-time email verification API and tools that block disposable, temporary and fake email addresses at signup to reduce wasted marketing spend, inflated contact lists, and poor deliverability. It sells to developers and marketers in B2B companies ranging from solo founders to enterprise growth teams that depend on clean signup data. It is delivered as a RESTful API with JSON responses plus integrations for marketing platforms, CRMs and forms, backed by a database of 125,000+ disposable domains updated daily.
Key features
- Real-time disposable email detection
- Syntax validation
- Domain verification
- Disposable domain check
- Quality score
- Role-based email detection
- MX record check
- SPF and DMARC check
- Free email detection
- Blacklist check
- Domain age check
- RESTful API with JSON responses
- Rate limiting
- HTTPS encryption
- Error handling
- Webhook support
- Integrations with marketing platforms and CRMs
- No social media activity within the last 30 days
GTM channels
- Blog
- Marketplace
- API
- Docs
ICP
- Software developers
- Marketing teams
- Engineering teams