UserCheck

Email and domain intelligence API for detecting disposable and fake emails

UserCheck (formerly MailCheck.ai) is an API that checks email addresses and domains for signup fraud signals, including disposable email detection, relay and forwarding domain detection, MX validation, public email provider detection, spam flagging, domain age and authority scoring, SPF/DMARC posture, email normalization, typo suggestions, and role account detection. It also offers Gates, a rule-based decision engine for signup protection, plus webhooks and integrations with WordPress, Laravel, Zapier, and Make.

Category: Security
Pricing: freemium · from $0/month
Free tier: yes
API: yes
MCP server: no
SDK: yes
Open source: no

#email-validation #disposable-email-detection #fraud-prevention #api #signup-protection

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Listed 2026-10-22 · last verified 2026-10-22 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.9

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API

curl https://toolgrep.com/api/products/usercheck