toolgrep / Security / UserCheck
Alternatives to UserCheck
UserCheck: Email and domain intelligence API for detecting disposable and fake emails. 8 products similar to UserCheck, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 8 of 8 have an API, 3 of 8 offer an MCP server.
- isitdisposable.com
Disposable email address detection via a drop-in JavaScript snippet and a REST API.
- EmailGuard API
Developer API for email validation: checks live MX records, blocks disposable emails, and autocorrects typos.
- Temp Mail Detector
Email validation API that detects disposable email addresses at signup using only the email domain.
- Disban
Email-domain classification API that detects disposable, free, alias, testing and parked domains at signup.
- LayerCall
Trust intelligence API for fraud prevention
- Mailsac
Disposable test email addresses for QA and developers
- Have I Been Pwned
Check if your email address has been exposed in a data breach
- emailvalidation.io
Free email checker and validator: verify any email address with syntax, MX record and live mailbox checks, validate lists in bulk or use the API.
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| UserCheck | Freemium · from $0/month | yes | yes | no | yes | no |
| isitdisposable.com | Freemium · from $0/month (Free plan, 250 lookups); paid plans from $19/month | yes | yes | no | no | no |
| EmailGuard API | Freemium | yes | yes | no | — | — |
| Temp Mail Detector | Freemium | yes | yes | no | yes | no |
| Disban | Freemium | yes | yes | yes | yes | — |
| LayerCall | Freemium · from $0 | yes | yes | no | yes | no |
| Mailsac | Freemium · from 0 | yes | yes | yes | yes | no |
| Have I Been Pwned | Freemium | yes | yes | no | no | no |
| emailvalidation.io | Freemium | yes | yes | yes | yes | no |
Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.
API
curl https://toolgrep.com/api/products/usercheck/alternatives