Real-time email validation API. Disposable detection, MX verification, typo correction. Sub-50ms responses.
Capabilities
Detects 110K+ throwaway email domains in real time.
Verifies the domain can actually receive mail.
Flags info@, admin@, support@ and other shared inboxes.
Catches gmial.com, yaho.com and other common misspellings.
Identifies Gmail, Yahoo, Outlook, and 500+ free email providers for B2B filtering.
Detects Firefox Relay, SimpleLogin, DuckDuckGo aliases, and plus-addressing.
# Validate an email address
curl -X GET "https://api.usecheck.sh/v1/email/test@mailinator.com" \
-H "Authorization: Bearer uc_live_abc123..."{
"status": 200,
"email": "test@mailinator.com",
"domain": "mailinator.com",
"mx": true,
"disposable": true,
"public_domain": false,
"relay_domain": false,
"role_account": false,
"alias": false,
"spam": true,
"did_you_mean": null
}Pricing
Every plan includes all features. Pick the volume you need.
For side projects and small apps.
For growing products and teams.
For high-volume applications.
For large-scale infrastructure.
All plans include: MX verification · Disposable detection (110K+) · Typo suggestions · Role account detection · Public domain detection · Relay & alias detection